EP2789257A2 - Hair-styling apparatus provided with optimised steam-delivery means - Google Patents

Abstract

The invention relates to a hairdressing appliance (1) comprising a portable treatment unit (2) configured at least for projecting water vapor onto the hair, the portable treatment unit comprising two configured arms (5, 6). to form a clamp provided with two hair treatment surfaces (8, 9) disposed vis-a-vis which concomitantly allow the pinch of a lock of hair, the first arm comprising a vaporization chamber (11) and first projection means (12, 12 ') configured to be connected to the vaporization chamber and to project the vapor outwardly near the treatment surface (9) of the first arm (5), characterized in that said apparatus hairstyle includes a steam transfer system (15, 22) configured to move steam from said first arm (5) to the second arm (6) and to reverse this vapor outwardly towards the inner side of the second arm, close the treatment surface (8) of the second arm (6). Various variants with a conduit (15) or a deflector are possible.

Description

The present invention relates to a hairdressing apparatus which comprises a steam treatment unit for treating the hair by vaporization in order to form them. In addition to the hair spray, the treatment unit of this hairdressing apparatus can also be configured to heat the hair for shaping. Such a hairdressing device allows for example, according to its configuration, to perform the smoothing, curling or embossing hair.

Hairdressers are known for smoothing, curling or embossing hair. These hairdressing appliances comprise a portable treatment unit consisting in particular of two arms, or jaws, which each comprise a treatment surface that can be flat or curved. The two arms are articulated together to form a clamp configured to pinch the hair between the two surfaces disposed vis-a-vis, when bringing the two arms together. These two arms also include a gripping zone for opening and closing the clamp and its handling during styling. At least one of these two surfaces comprises a heating device for the treatment by heating the hair when they are pinched between the two surfaces. Smoothing a lock of hair is done by pinching the wick between the two surfaces and moving the clamp closed along this wick, from the root to the tip. Curling a lock of hair is done by pinching the wick between the two surfaces and at least partially winding this wick around the surfaces, the heat to fix the hair loop.

To improve the shaping of the hair, it is known to use in addition to the treatment by heating, a steam treatment, said vapor being sprayed onto the hair. As such, the Applicant has already developed a steam styling apparatus which is described in the patent application published under the number FR2967017A1 . Outraged the technical characteristics described above, the hairdressing apparatus according to FR2967017A1 comprises a remote base relative to the portable processing unit and connected thereto by means of a cord. The base includes a water reservoir and a pump for, when activated, to pump water into the reservoir to feed the clamp. One of the arms of the portable treatment unit comprises a vaporization chamber equipped with a heating device. When the hairdressing appliance has reached its optimum conditions of use and the user wishes to use steam for its styling, the pump injects water into the steam chamber; this water vaporizes under the action of the heating device and the steam is projected onto the hair by means of projection means arranged on said arm. Thus, the clamp allows the treatment of hair by heating and steam.

We also know the patent EP1515629 B1 which discloses a hair styling apparatus of the straightener type for smoothing hair. The hairdressing apparatus includes two tongs which each comprise a heated surface treatment surface. These flat surfaces make it possible to pinch a lock of hair when closing said clip. In addition, these arms each include a vaporization chamber configured to project vapor outwardly through the respective heating plane surface. The vapor projection to the outside of the two arms has the advantage of vaporizing the lock of hair pinched between the two flat heating surfaces on its two opposite faces.

The present invention aims at optimizing the design of hairdressing appliances having a technical effect similar to that mentioned above of the hairdressing apparatus described in FIG. EP Patent 1,515,629 B1 that is, the vapor projection outwards of the two arms to vaporize the lock of hair on its two opposite sides. The design of the hairdressing apparatus according to the invention advantageously makes it possible to reduce its manufacturing cost, its weight and its bulk. It also makes it possible to obtain a better quality of the steam treatment. Other advantages will however appear in the following description.

To this end, the invention relates to a hairdressing apparatus comprising a portable treatment unit configured at least for projecting water vapor on the hair. In a preferred design this treatment unit is also configured to heat the hair, which allows treatment by heating and steam. The portable treatment unit comprises two arms configured to form a clamp provided with two hair treatment surfaces arranged vis-à-vis that allow concomitantly the pinch of a lock of hair. According to the hairdressing apparatus object of the invention, the first arm comprises a vaporization chamber and first projection means configured to be connected to the vaporization chamber and to project the vapor towards the outside near the surface of the vaporization chamber. treatment of said first arm. In addition, according to the invention, the hairdressing apparatus comprises a steam transfer system configured to move steam from said first arm to the second arm and, conversely, to project this vapor outwards, on the side of the face. internal of the second arm, close to the treatment surface of said second arm.

The hairdressing apparatus comprises a device for projecting the steam outwards from the two arms, on the side of their internal faces disposed facing each other, close to the two treatment surfaces, which makes it possible to optimize the vapor treatment on both sides of the lock of hair before it is pinched between the two treatment surfaces of the two arms. Thus, the design of the hairdressing appliance according to the invention makes it possible to dispense with a second spray chamber on the second arm, which considerably simplifies the design of the apparatus and reduces its weight and its cost. manufacturing, or even the consumption of electrical energy. The lock of hair will therefore receive steam from the inner face of the first arm and from the inner face of the second arm, which makes the steam treatment very effective.

In a first embodiment of the hairdressing apparatus that is the subject of the invention, the transfer system comprises at least one duct configured to transfer steam from the vaporization chamber to the second arm and second projection means configured on the second arm to be connected to the duct and for projecting the vapor outwardly near the treatment surface of said second arm.

According to a preferred embodiment of this first embodiment of the hairdressing apparatus which is the subject of the invention, the duct comprises a first duct portion configured on the first arm to be connected to the vaporization chamber and a second configured duct portion. on the second arm to be connected to the second projection means. In addition, these first and second conduit portions are configured to communicate with each other when closing the clamp and constitute said conduit. This design advantageously makes it possible to optimize the arrangement of the duct on the portable treatment unit in order to reduce the length and bulk of said duct. Reducing the length of the duct has the advantage of reducing the flow losses of the steam during its projection.

In an embodiment according to this preferred design, the first duct portion comprises a male end and the second duct portion comprises a female end, said male and female ends being configured to fit one into the other when closing. of the clip. This ensures a seal between the two duct portions to ensure a continuity of steam flow and avoid a loss of flow during the transfer of steam from the first arm to the second arm.

According to a design of this first embodiment of the hairdressing apparatus that is the subject of the invention, the second projection means comprise outwardly oriented nozzles, on the side of the internal face of the second arm, close to the surface. treating said second arm.

Alternatively, these nozzles are further inclined to an edge of the second arm. This allows the steam to be projected outwardly with an inclination towards the edge with respect to the treatment surface of the second arm. Thus the vapor projection is deported on the arm. When this steam is projected downstream on the second side of the lock of hair, it allows to anticipate the formation of condensate on the second side of the lock of hair before, -see after the direction of movement of the device- the pinch of this lock of hair. This anticipation of the formation of the condensate allows a better treatment of the hair.

In a second embodiment of the hairdressing apparatus according to the invention, the transfer system comprises, on the one hand, first projection means on the first arm, as mentioned above, which are configured to project steam to the outside of the inner face of the first arm near the first treatment surface. On the other hand, the transfer system comprises a baffle configured along the second treatment surface of the second arm, on its inner face, to return the outside of the inner face of the second arm the steam projected by the first means projection. Thus the steam is projected by the first projection means on one side of the lock of hair that is about to be pinched between the two treatment surfaces; part of this steam then passes through the lock of hair and comes into contact with the deflector which deflects the steam and returns it in the opposite direction on the other side of said lock of hair. This prevents the steam from breaking on the deflector due to its configuration, which optimizes the return of steam to the second side of the hair.

In a preferred embodiment, according to this second embodiment of the hairdressing apparatus object of the invention, the transfer system comprises means configured to facilitate the projection of steam through the lock of hair. Thus the steam projected by the first projection means more easily reaches the deflector without significant loss of flow, which optimizes the return of steam in the opposite direction by said deflector.

According to a first design of this preferred embodiment, for the second embodiment of the hairdressing apparatus, the first projection means comprise teeth which are each provided with at least one steam projection orifice in the direction of the deflector. This design allows the teeth to pass through the lock of hair and then directly project steam on the baffle, which has the advantage of ensuring the return of this steam by the deflector, which that is the density of the lock of hair which conditions the passage of the vapor through this one. Thus, this design ensures a balanced spray on both sides of the lock of hair, regardless of the type of hair styled.

According to a second design of this preferred embodiment, for the second embodiment of the hairdressing appliance, the longitudinal edge of the deflector disposed downstream part has the shape of a comb configured to come into contact with the lock of hair and comb her. This makes it possible to prepare the lock of hair and to aerate said hair before the projection of steam by the first projection means on the first arm and, thus, to facilitate the passage of the vapor through said lock of hair and the projection steam to the baffle without significant loss of flow.

Alternatively, the longitudinal edge of the deflector may comprise a roller. The roller can be freely movable about its longitudinal axis. This improves the movement of the apparatus along the wick, without undesirably marking it by the longitudinal edge.

In one embodiment of the baffle on the hairdressing apparatus object of the invention, it has the shape of a semi-cylindrical bowl. This makes it possible to return the steam perpendicular to the treatment surface of the second arm, close to it.

In an alternative embodiment of the baffle on the hairdressing apparatus object of the invention, it has the shape of a bowl which has a cross section in drop of water. This shape makes it possible to return the vapor along an outwardly inclined trajectory with respect to the treatment surface of the second arm and towards the edge of the arm, to deport the vapor projection on said arm. When the vapor projection is offset on the downstream side of the arm, the steam is projected downstream on the second side of the lock of hair. Such downstream projection has the advantage of anticipating the projection of steam on the lock of hair and, thus, to promote the formation of the condensate before the pinching of said lock of hair, which is beneficial for the treatment of the lock of hair. hair. This downstream direction is defined by taking account of the direction of movement of the portable treatment unit when the two arms pinch the lock of hair, during styling, the vapor projection being performed prior to the pinch of the lock of hair.

According to a first conceivable design for the two aforementioned embodiments of the hairdressing apparatus that is the subject of the invention, the first projection means comprise nozzles, for example a nozzle ramp, these nozzles being oriented outwards, on the inner face of the first arm, close to the treatment surface of said first arm.

According to this first design and for the first embodiment of the hairdressing apparatus object of the invention, the nozzles can be inclined to an edge of the first arm. This allows the steam to be projected outwards with an inclination towards the edge of the first arm. Thus the vapor projection is offset on said arm. When this offset is performed on the downstream side of the arm, the steam is projected downstream on the first side of the lock of hair, which also allows to anticipate the formation of condensate on the first side of the lock of hair before the pinching this lock of hair.

According to a second design that can be envisaged for the two aforementioned embodiments of the hairdressing apparatus that is the subject of the invention, the first projection means comprise a projection slit configured to project the vapor uniformly and continuously, outwardly of the inner face of the first arm, all along and close to the treatment surface of said first arm. One could also consider such a projection slot for the second projection means on the second arm, relating to the first embodiment of the hairdressing apparatus object of the invention.

The hairdressing apparatus according to the invention having the aforementioned characteristics, may have different configuration. Thus, according to the invention, the hairdressing appliance may have surfaces configured to allow the smoothing, curling and / or embossing of the hair.

• La figure 1 illustre une vue d'ensemble d'un appareil de coiffure du type lisseur;
• La figure 2 illustre un premier mode de réalisation des éléments actifs de l'unité de traitement de l'appareil de coiffure, agencés dans les portions extrêmes des bras formant la pince ;
• Les figures 3 et 4 illustrent une variante de conception de la figure 2 ;
• La figure 5 illustre un second mode de réalisation des éléments actifs de l'unité de traitement de l'appareil de coiffure ;
• La figure 6 schématise une première variante de conception de la figure 5 qui montre les éléments actifs sur un premier bras de l'unité de traitement mettant en évidence des dents permettant la projection de vapeur ;
• Les figures 7 et 8 illustrent une section transversale de l'unité de traitement ayant une conception respectivement selon les figures 5 et 6 ;
• La figure 9 illustre une seconde variante de conception de la figure 5 montrant un peigne agencé sur le second bras ;
• La figure 10 illustre une troisième variante de conception de la figure 5.

The following description highlights the features and advantages of the hairdressing apparatus according to the invention. This description is based on figures considered in a non-limiting way and among which:

• The figure 1 illustrates an overview of a hair styling apparatus of the straightener type;
• The figure 2 illustrates a first embodiment of the active elements of the treatment unit of the hairdressing apparatus, arranged in the end portions of the arms forming the clamp;
• The Figures 3 and 4 illustrate a variant of the design of the figure 2 ;
• The figure 5 illustrates a second embodiment of the active elements of the treatment unit of the hairdressing apparatus;
• The figure 6 schematizes a first variant of the design of the figure 5 which shows the active elements on a first arm of the treatment unit highlighting teeth for vapor projection;
• The Figures 7 and 8 illustrate a cross section of the treatment unit having a design respectively according to the figures 5 and 6 ;
• The figure 9 illustrates a second variant of the design of the figure 5 showing a comb arranged on the second arm;
• The figure 10 illustrates a third variant of the design of the figure 5 .

In the following description, the same references are used to designate the same or similar characteristics according to the different design variants of the hairdressing apparatus according to the invention which are described in support of the Figures 1 to 10 .

On the figure 1 , the hairdressing apparatus 1 object of the invention is a hair straightener. It comprises a portable processing unit 2 and a remote base 3, connected to each other by means of a cord 4 which makes it possible to supply electricity and water to the portable treatment unit 2 from the base 3. This base 3 comprises a water tank and a water circulation pump and is electrically powered by means of an electrical connection socket. These characteristics are already known of the skilled person. They are found in particular in the patent application FR2967017A1 filed by the plaintiff. Alternatively, the water tank and the pump can be inserted into the portable treatment unit, thus not requiring the presence of a remote base.

The portable treatment unit 2 comprises two arms 5, 6 - also called jaws - articulated to each other by means of a pivot connection 7, which makes it possible to form a clamp. The two arms 5, 6 each comprise on their inner face and at their distal portion 5a, 6a, a heating treatment surface 8, 9. According to the embodiment of FIG. figure 1 the heating treatment surfaces 8, 9 are flat, in the form of two plates. Naturally, variations may be envisaged with curved heating treatment surfaces, such as, in particular, hair-style hairdressing appliances, or even corrugated heating treatment surfaces, such as in particular on hairdressing appliances of the hair-embossing type. It could also be envisaged variant embodiments with only one of the two treatment surfaces being heated, the other treatment surface contributing to the pinch of the lock of hair for shaping. In the description below, the two treatment surfaces 8, 9 are heating.

The two arms 5, 6 each comprise a proximal portion 5b, 6b. These two proximal portions 5b, 6b can concomitantly be grasped with one hand, which allows the manipulation of the portable treatment unit 2 and the closure of the clamp when the two proximal portions 5b, 6b are clamped. When closing the clamp, the heated treatment surfaces 8, 9 arranged opposite each other come into contact with each other, which allows the pinch of a lock of hair arranged between these two surfaces. 8, 9. A spring 10 arranged between the two arms 5, 6 near the pivot connection 7, allows the opening of the clamp when it stops tightening with the hand.

As illustrated in figure 1 , the first arm 5 comprises at its distal portion 5a, a vaporization chamber 11 which allows the creation of steam that will be projected on the lock of hair before being pinched between the two heating treatment surfaces 8, 9 of the clamp in the closed position.

In one embodiment, the portable treatment unit 2 of the hairdressing appliance 1 according to the invention may have similar technical characteristics to those described in the patent application. FR2967017A1 filed by the applicant, as to the implementation of the heating treatment surfaces 8, 9 and the vaporization chamber 11, with all the advantages that provides such a design. Variants are of course conceivable for these elements, without departing from the scope of the invention. Thus, the heat treatment surfaces 8, 9 and the vaporization chamber 11 each comprise a heating device consisting of a positive temperature coefficient thermistor, called PTC, and a device for measuring the temperature of the heating device consisting of a thermistor with a negative temperature coefficient, called CTN. In an alternative embodiment with only one of the two treatment surfaces being heated, the other treatment surface only contributing to the pinching of the lock of hair for its shaping, said processing unit comprises only two thermistors with a temperature coefficient two negative temperature coefficient thermistors or even some known variants, a single negative temperature coefficient thermistor measuring the temperature of the two thermistors with a positive temperature coefficient.

On the Figures 2 to 4 are illustrated various variants of a first design mode of the processing unit 2 on the hairdressing apparatus 1 object of the invention.

On the embodiment of the figure 2 , the portable treatment unit 2 comprises a first arm 5 which comprises first projection means 12 provided with a slot 13 directed towards the outside of the inner face 14 of the arm. This slot 13 extends longitudinally between the edge 9a of the heating treatment surface 9, near this heating treatment surface 9, and the edge 14a of the inner face 14 of the arm 5, as shown in FIG. figure 2 . This slot 13 extends inside the distal portion 5a of the first arm 5 and communicates with the chamber of vaporization 11 illustrated in figure 1 . Thus, the vapor passes through the projection means 12 and is projected outwardly of the first arm 5 passing through the slot 13, which makes it possible to create a steam curtain directed towards the outside of the first arm 5 near the heating treatment surface 9.

As illustrated on the figure 2 the first arm 5 comprises a first portion 15a of a duct 15 which has a slightly conical shape and constitutes a male part of the duct 15. Similarly, the second arm 6 comprises a second portion 15b of the duct 15 which constitutes a female part said duct 15. When closing the clamp, the first portion 15a male engages in the second portion 15b female, which allows to form said duct 15. This interlocking of the first portion 15a in the second portion 15b and the conical shape of said first portion 15a provides a seal of the conduit. The first portion 15a of the duct 15 communicates with the vaporization chamber 11, for example by opening directly into this vaporization chamber 11. In addition, the second portion 15b of the duct 15 communicates with second projection means 16 arranged on the inner face 17 of the distal portion 6a of the second arm 6 between the edge 8a of the second heating treatment surface 8 and the edge 17a of the inner face 17, as illustrated in FIG. figure 2 . On the figure 2 these second projection means 16 consist of a nozzle manifold 18, the nozzles 18 being connected to the second portion 15b of the duct 15, for example by means of ducts or complementary circulation pipes (not shown in the figures). When closing the clamp, the first portion 15a and the second portion 15b of the conduit 15 communicate with each other; the creation of steam in the vaporization chamber 11 makes it possible, on the one hand, to directly project steam through the slot 13, towards the outside of the first arm 5 and, on the other hand, to transfer steam through the duct 15 and then projecting this transferred vapor through the nozzles, to the outside of the second arm 6. Thus, when a lock of hair is pinched between the two heating treatment surfaces 8, 9, the portion of this lock of hair located near said heating treatment surfaces 8, 9 receives steam on its two opposite sides.

Design variants are conceivable for the first and second projection means 12, 16 on the first and second arms 5, 6. Figures 3 and 4 , the second projection means 16 comprise a nozzle ramp 18, as for the figure 2 . We see on the figure 4 that the nozzles 18 are inclined at an angle α1 relative to the inner face 17 of the second arm 6. This angle α1 is greater than 90 °, for example 120 °, which allows a vapor projection outwards and downstream of the second arm 6 which, during styling, moves in the direction illustrated by the arrow 19 on the figure 4 . This projection of vapor downstream, before the pinching of the lock of hair between the two heating treatment surfaces 8, 9, makes it possible to anticipate the formation of the condensate on the second side of the hair. On the Figures 3 and 4 , the first projection means 12 are also constituted by a nozzle ramp 20 replacing the slot 13 of the figure 2 , said nozzles 20 being inclined at an angle α2 with respect to the internal face 14 of the first arm 5. This angle α2 is equal to 90 °, which allows a vapor projection towards the outside of the first arm 5, just before the heating treatment surface 9 on this first arm 5. Of course, it is possible to envisage design variants of the hairdressing appliance 1, with one and / or the other of the nozzle ramp designs 18, 20 or slit 13 arranged on one and / or the other of the first and second projection means 12, 16. It could also provide a slot similar to the slot 13 of the figure 2 but configured to project steam at an angle greater than 90 ° in a manner comparable to the angle α1 on the figure 4 .

It is also possible to provide on the internal face 14 of the first arm 5, the arrangement of a comb (not shown) in the zone situated along the edge 9a of the heating treatment surface 9, between the said heating treatment surface 9 and the first projection means 12. It could similarly be envisaged on the inner face 17 of the second arm 6, instead of the first arm 5. By comb is meant a comb as such comprising rigid or semi-rigid teeth. -rigids even a row of bristles in natural or synthetic material. This comb can be fixed permanently or removably to the inner face 14 of the first arm 5. By way of example, it is possible to mold the comb directly into the material of the inner face 14 or to provide the arrangement of a slide connection between the inner face 14 of the first arm and the comb.

On the Figures 5 to 10 are illustrated various variants of a second design mode of the treatment unit 2 on the hairdressing appliance 1 object of the invention.

On the Figures 5 to 10 , the treatment unit 2 of the hairdressing appliance 1 comprises a first arm 5 which has a heating treatment surface 9 and a vaporization chamber 11 and a second arm 6 which has a heating treatment surface 8. The first arm 5 comprises first projection means 12 'which consist of a nozzle manifold 21 of identical design to the nozzle manifold 20 illustrated in FIG. figure 3 and 4 for the first embodiment. The nozzle manifold 21 could be replaced by a slot similar to the slot 13 illustrated in FIG. figure 2 for the first embodiment. These projection means 12 'can project steam outside the inner face 14 of the first arm 5, between the edge 9a of the first heating treatment surface 9 and the edge 14a of the inner face 14 of the first arm 5. The second arm 6 comprises a deflector 22 which is arranged on the inner face 17 of the second arm 6, between the edge 8a of the second heating treatment surface 8 and the edge 17a of the inner face 17 of the second arm 6. This deflector 22 is arranged above the first projection means 12 'on the first arm 5 and comprises a curved shape.

On the Figures 5 and 7 , the deflector 22 has, in a cross-sectional view, a curved shape drop of water. So as illustrated in figure 7 , the steam illustrated by the arrow 23 is projected outwardly of the nozzles 21 on the first arm 5, towards a first side of the hair 24. Part of this projected vapor passes through the hair 24 and abuts against the deflector 22. The curved shape of the deflector 22 makes it possible to return the steam towards the second side of the hair 24, opposite the first side of said hair, as illustrated by the arrow 23. It is further noted that the curved form in droplet water of the deflector 22 makes it possible to return the steam towards the outside of the second arm 6 and downstream of the deflector 22, as illustrated by the arrow 23 on the figure 7 . This helps to promote the formation of the condensate on the second side of the hair 24 before the pinch of the lock of hair between the heat treatment surfaces 8, 9. Note on these Figures 5 and 7 a comb 25 is arranged on the inner face 14 of the first arm 5, along the edge 9a of the heating treatment surface 9, between said heating treatment surface 9 and the first projection means 12 '.

On a variant schematized in figures 6 and 8 , teeth 26 are arranged on the inner face 14 of the first arm 5, along the edge 9a of the heating treatment surface 9, between said heating treatment surface 9 and the first projection means 12 '. These teeth 26 each comprise at their end, a projection orifice 27 which is connected by a conduit 28 to the vaporization chamber 11. The length of these teeth 26 is dimensioned so that the ends of the teeth 26 and, therefore, the orifices projection 27 are positioned above the plane of the heating treatment surface 9 on the first arm 5. Thus, when closing the clamp, the teeth 26 pass through the lock of hair and the through holes are located above the second side of the hair. As illustrated by the arrows 29a, 29b on the figures 6 and 8 , the creation of steam thus makes it possible to project steam towards the outside of the first arm by passing through the nozzles 21 and through the projection orifices 27. The vapor projected through the nozzles 21 makes it possible to vaporize the first side of the 24. The vapor projected through the projection orifices 27 is discharged by the deflector 22 and returned towards the second side of the hair 24. It is noted on the figure 8 that the shape of the deflector 22 in drop of water makes it possible to return the steam downstream with respect to the second heating treatment surface 8, on the second side of the hair 24.

On the Figures 7 and 8 , the downstream longitudinal edge 22a of the deflector 22 - which corresponds to the edge 17a of the inner face 17 of the second arm 6 - is arranged at least in the same plane as the heating treatment surface 8 of the second arm 6, or even below this heat treatment surface. Thus, when closing the clamp, the downstream longitudinal edge 22a of the baffle 22 is in contact with the lock of hair 24, which ensures a preheating of the lock of hair before its vaporization.

On the Figures 9 and 10 , the hairdressing appliance 1 comprises characteristics identical to those described for the hairdressing appliance 1 of the Figures 5 and 7 except for the shape of the deflector 22 which varies. On the figure 9 the downstream longitudinal edge 22a of the deflector 22 comprises a comb 30 formed directly in said deflector 22. This comb 30 makes it possible to separate the hair and to ventilate it before the steam is projected outwardly of the first arm 5 by the nozzles 21, towards the hair and the deflector 22. The steam projected by these nozzles 21 makes it possible to vaporize the first side of the hair. In addition, the separation of the hair by means of the comb 30 facilitates the passage of vapor through this hair, said vapor passing through the hair being then returned by the deflector 22.

On the Figures 9 and 10 the downstream longitudinal edge 22a of the deflector 22 is disposed at least in the same plane as the heating treatment surface 8 of the second arm 6, and preferably slightly below this heating treatment surface. Thus, when the clamp is closed, the comb 30 is arranged on the downstream longitudinal edge 22a of the deflector 22, for the design illustrated in FIG. figure 9 , penetrates properly in the lock of hair. Regarding the design of the figure 10 , the position of the downstream longitudinal edge 22a allows the contact of the deflector 22 with the lock of hair 24, which ensures a preheating of the lock of hair before its vaporization. To optimize this preheating, the downstream longitudinal edge 22a of the deflector 22 comprises a roller 31, illustrated in FIG. figure 10 which promotes the contact of the hair with the deflector 22. On these Figures 9 and 10 , the deflector 22 comprises two adjacent bowls 32a, 32b. The first bowl 32a on the second arm 6 is disposed above the first projection means 12 'of the first arm 5. The second bowl 32b is disposed above the comb 25. Only the first bowl 32a contributes to the return of the steam towards the second side of the hair, the second bowl 32b helping to draw properly the semicircular shape of the first bowl 32a. This semicircular shape favors the return of the steam in the direction of the arrow 33 illustrated in FIG. figure 10 and prevents on the contrary the return of steam in the opposite direction, towards the comb 25.

We can possibly combine some of the characteristics described for the modes of Figures 5 to 10 . For example, it is possible to implement a roller 31 or a comb 30 on the downstream longitudinal edge 22a of the deflector 22 illustrated in FIG. figure 8 .

Other characteristics are conceivable without departing from the scope of the invention. In particular, it is possible to provide variants of hairdressing apparatus 1 which have different means for creating steam. For example, it is possible to provide a mini-tank of water directly on the first arm 5 near the vaporization chamber 11. It is also possible to completely defer the creation of vapor in the base 3 and then to convey this vapor into the Spray chamber 11.

In the examples described above in support of Figures 2 to 10 , the steam spraying device is arranged on the downstream side of the processing unit given the direction of movement of said processing unit 2 defined by the arrow 19 on the figures 4 , 7 and 8 . According to this use, it will be understood that the steam projection device makes it possible to deport the vapor projection downstream of the first arm 5 and / or the second arm 6, which makes it possible to anticipate the formation of the condensate on at least one side of the lock of hair before the passage of the lock of hair between the two treatment surfaces 8, 9. However, it is understood that the processing unit 2 could be moved in the opposite direction of the arrow 19, in which case the projection steam would be offset upstream of the first arm 5 and / or the second arm 6, which would delay the vaporization of at least one side of the lock of hair after the passage of this lock of hair between the two surfaces treatment 8, 9.

Claims (16)

Hairdressing appliance (1) comprising a portable treatment unit (2) configured at least for projecting water vapor onto the hair, the portable treatment unit comprising two arms (5, 6) configured to form a clamp provided with two hair treatment surfaces (8, 9) arranged opposite each other which simultaneously allow the pinching of a lock of hair, the first arm comprising a vaporization chamber (11) and first projection means (12). , 12 ') configured to be connected to the vaporization chamber and to project the vapor outwardly near the treatment surface (9) of the first arm (5)
characterized in that said hairdressing apparatus comprises a steam transfer system (15, 22) configured to move steam from said first arm (5) to the second arm (6) and to reverse this vapor to the outside of the side of the inner face of the second arm, close to the treatment surface (8) of the second arm (6). Hairdressing appliance (1) according to claim 1, wherein the transfer system comprises at least one duct (15) configured to transfer steam from the vaporization chamber (11) to the second arm (6) and second means projection device (16) configured on the second arm (6) to be connected to the conduit (15) and to project the vapor outwardly near the treatment surface (8) of said second arm. A hairdressing apparatus (1) according to claim 2, wherein the conduit (15) comprises a first conduit portion (15a) configured on the first arm (5) for connection to the vaporization chamber (11) and a second portion Conduit (15b) configured on the second arm (6) to be connected to the second projection means (16), said first and second portions duct being configured to communicate with each other when closing the clamp and constitute said duct (15). A hairdressing apparatus (1) according to claim 3, wherein the first duct portion (15a) comprises a male end and the second duct portion (15b) comprises a female end, said male and female ends being configured to fit together one in the other when closing the clamp. Hairdressing appliance (1) according to one of claims 2 to 4, wherein the second projection means (16) comprise nozzles (18) facing outwardly near the treatment surface (8) of the second arm (6). Hairdressing appliance (1) according to claim 5, wherein the nozzles (18) are inclined to an edge (17a) of the second arm (6). Hairdressing appliance (1) according to claim 1, in which the transfer system comprises, on the one hand, first projection means (12 ') which are configured to project steam towards the outside of the inner face of the first arm (5) and, on the other hand, a deflector (22) configured on the inner face of the second arm (6), along the second treatment surface (8), to send the projected vapor outwardly by the first projection means (12 '). Hairdressing appliance (1) according to claim 7, wherein the transfer system comprises means (26, 30) configured to facilitate the projection of steam through the lock of hair. Hairdressing apparatus (1) according to claim 8, wherein the first projection means (12 ') comprise teeth (26) which are provided with each of at least one projection orifice (27) of the vapor towards the deflector (22). Hairdressing appliance (1) according to claim 7, wherein the longitudinal edge (22a) of the deflector (22) arranged in the downstream part has the shape of a comb (30). A hairdressing appliance (1) according to claim 7, wherein the longitudinal edge (22a) of the baffle (22) comprises a roller (31). Hairdressing appliance (1) according to one of claims 7 to 11, wherein the deflector (22) has the shape of a semi-cylindrical bowl. Hairdressing appliance (1) according to one of claims 7 to 11, wherein the baffle (22) has the shape of a bowl which has a teardrop cross section. Hairdressing appliance (1) according to one of claims 1 to 13, wherein the first projection means (12, 12 ') comprise nozzles (20) oriented outwards near the treatment surface (9) of the first arm (5). Hairdressing appliance (1) according to one of claims 1 to 6, wherein the first projection means (12) comprise outwardly oriented nozzles near the treatment surface (9) of the first arm (5). and inclined to an edge (14a) of the first arm. Hairdressing appliance (1) according to one of claims 1 to 15, the treatment surfaces (8, 9) are configured to allow the smoothing, wrapping and / or embossing hair.

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