FR3091153A1 - hairdressing appliance with encapsulation of an electrical or electronic component - Google Patents

Abstract

Hairdressing appliance comprising a main body (1) inside which an air flow (3) circulates, said main body (1) comprising a motor-fan unit (13) intended to set in motion the air flow (3), at least one electrical or electronic component (15), characterized in that the hairdressing apparatus comprises an encapsulation device (14) inside which said at least one electrical or electronic component (15) is disposed. ) so as to isolate the latter from the air flow (3), the encapsulation device (14) being of conical or frusto-conical shape. Figure for the abstract: Fig. 7

Description

Description

Title of the invention: hairdressing appliance with encapsulation of an electrical or electronic component

Technical area

The present invention relates to the field of hairdressing apparatus and in particular hairdressing apparatus comprising a main body inside which a flow of air circulates, said main body comprising a motor-fan unit intended to set movement of the air flow, and at least one electrical or electronic component.

Prior art

[0002] Numerous hairdressing devices are known which blow hot air to allow users to dry the hair and / or to shape it.

In particular, a well-known device is the hair dryer, which in particular comprises a motor driving a propeller, and a heating element which heats the air flow thus generated. The motor and / or the heating element is (are) controlled by different electrical or electronic components which are sometimes assembled on a printed circuit. Difficulties in cooling these components are often encountered so that the latter may malfunction or even burn out resulting in the failure of the hair dryer.

To overcome this drawback, it is for example known from patent EP306765 to have a printed circuit board around the motor while having an electrical or electronic component, in this case a triac, directly in the flow of air, and more particularly in place of a fin of a rectifier. Thus, the component in question is directly exposed to the air flow which contributes to the good cooling of the latter.

This solution, although it is generally satisfactory from the point of view of the cooling of the component, does not however have certain drawbacks. Indeed, the component being placed directly in contact with the air flow, the flow of the latter is disturbed. Indeed, the air encounters an obstacle in its path which will generate pressure drops and noise. Consequently, the efficiency of the device is deteriorated (due to the pressure losses induced by the component in the air flow), its performance decreases, and nuisances appear for the user: an unpleasant noise is generated by the interaction between the air flow and the component.

There is therefore a need to improve existing devices by minimizing the impact of electrical or electronic components on the proper flow of the air flow. Statement of the invention

The present invention aims to overcome the aforementioned drawbacks.

An objective of the invention is to provide a hairstyling device which is particularly efficient, in particular in terms of the speed and the flow rate of the air flow.

Another objective of the invention is to propose a hair styling device which is particularly silent.

Another objective of the invention is to provide a hair styling device which is particularly compact and ergonomic.

Another object of the invention is to provide a hair styling device which is particularly reliable and robust.

Another objective of the invention is to provide a hairstyling device which is inexpensive and simple to manufacture.

These objectives are achieved using a hairstyling device comprising a main body inside which a flow of air circulates, said main body comprising a motor-fan unit intended to set in motion the flow of air, at least one electrical or electronic component, an encapsulation device inside which said at least one electrical or electronic component is disposed so as to isolate the latter from the air flow, the encapsulation device being conical or truncated shape.

By conical or frusto-conical shape is meant an object having a base which tapers regularly towards a point. In the case of a conical shape, the object in question, in this case, the encapsulation device, comprises said point, or vertex, while in the case of a truncated-conical shape, the device in question does not understand this summit. In other words, in the case of a frusto-conical shape, the encapsulation device comprises a second base, opposite and parallel to the base, in the manner of a cone which would have been cut before its top. Examples of conical shapes can for example include a cone or a pyramid, or even other more original shapes, at the very least that they provide a hollow interior space making it possible to accommodate said at least one electrical or electronic component.

Such a conical or frusto-conical shape of the encapsulation device makes it possible, quite remarkably, not to disturb the flow of the air flow taking into account its aerodynamic shape. In particular, the halftone generated by this type of shape is minimized compared to the devices of the prior art. Indeed, such a conical or frusto-conical shape offers an angle with respect to the air flow which prevents the delamination of the boundary layer, detachment which would cause the creation of turbulence damaging to the good flow. Thus the pressure drops are limited and the ventilation efficiency of the device is significantly improved. It is thus for example possible, thanks to the invention, to use, for equal performance, a less powerful motor which reduces the costs, the weight or even the size (in particular the diameter) of the device. It is also possible, for the same engine, to use components generating significant pressure drops, such as a more compact heating element or narrower styling accessories, while maintaining the same level of performance, thanks to the gain given by the encapsulation device of the invention. In addition, given this aerodynamically optimized shape, the noise generated by the flow of air around the encapsulation device is significantly reduced, not to say eliminated.

Preferably, the conical or frusto-conical shape is a form of revolution, that is to say that the encapsulation device has a section of revolution. Such a form of revolution makes it possible to propose an encapsulation device which is particularly easy to manufacture, in particular by molding or machining techniques, well known to those skilled in the art. In addition, such a shape has quite remarkable aerodynamic performance as will be detailed later.

However, without departing from the scope of the invention, the conical or frusto-conical shape can be a polygonal shape, for example a conical or frusto-conical pyramid shape.

The encapsulation device can be made in one piece (that is to say be in one piece) or else include a plurality of pieces, for example two or more.

Advantageously, the encapsulation device is coaxial with the fan unit. Among other terms, the encapsulation device and the fan unit are aligned. Such a configuration makes it possible to propose a particularly compact device, in particular as regards its diameter or its radial bulk.

Preferably, the encapsulation device comprises a frusto-conical capsule extending longitudinally between a proximal opening and a distal opening. The expressions "proximal" and "distal" are defined in relation to the air flow. Thus the proximal opening is located near the air inlet, while the distal opening is located at a distance from the air inlet. The distal opening is then of smaller section than the proximal opening, so as to define a truncated cone as explained above. Indifferently, the trunk-conical capsule can be in one piece or formed of a plurality of parts, such as for example two half truncated cones assembled together by any suitable means (screwing, clipping, gluing, welding, etc. )

According to this preferred embodiment, the proximal opening is oriented towards the motor-ventilator group, so as to orient the encapsulation device in an optimal direction relative to the direction of flow of the air flow. According to this configuration, the air will flow from the base of the cone to the top of the cone. Preferably the proximal opening is in contact with the motor-ventilator group, which allows on the one hand to limit the overall size of the device but also to improve aerodynamics by providing a substantially continuous surface between the group fan motor and the encapsulation device.

According to this preferred embodiment, the encapsulation device is located downstream of said motor-fan unit in the direction of flow of the air flow, which makes it possible to position the encapsulation device in an aerodynamic configuration ideal compared to the motor-fan group. The expression downstream is understood with respect to the direction of flow of the air flow, and therefore means that the device in question is placed after the motor-fan unit in the direction of flow of the air flow.

Said at least one electrical or electronic component may be present in order to perform a multitude of functions, such as for example electromagnetic filtering, measurement, breaking or actuation of current, etc. Optionally, the hairdressing apparatus comprises a printed circuit itself comprising said at least one electrical or electronic component. Generally, the printed circuit includes and interconnects a plurality of electrical or electronic components, in order to centralize in a single place the various control and command functions of the device, such as for example, electromagnetic filtering, measurement, control of the motor-fan unit, or of the heating element which will be described later.

Advantageously, the hairdressing apparatus comprises a heating device and the encapsulation device is located between the motor-fan unit and the heating device, which makes it possible to limit the length of the device while optimizing the flow of the air flow and cooling of the electrical or electronic component or printed circuit insofar as the encapsulation device is subjected to an air flow which is not yet heated. In addition, this arrangement makes it possible to place the printed circuit, which generally comprises electrical or electronic components controlling both the motor-fan unit and the heating device, at a substantially equal distance from one and the other, thus limiting the length of electrical cables required. In addition, given the conical or frusto-conical shape of the encapsulating device, the air is remarkably directed and guided towards the heating device, further improving the ventilation efficiency of the device.

Preferably, the encapsulation device comprises at least one fin projecting from the encapsulation device and extending longitudinally in the direction of flow of the air flow. This fin fulfills the function of guiding the air flow, in particular by rectifying the air flow coming from the motor-fan unit. Indeed, the fin extending longitudinally in the air flow, the latter is oriented longitudinally longitudinally which makes it possible to remove the vortex component of the air flow from the motor-fan unit. In fact, the motor-fan unit generally comprises, in a manner known as such, a rotary propeller which tends to generate strong vortex turbulences in the air flow. In addition, given the length of said fin, the contact surface between the encapsulation device and the air flow is increased which can improve the heat exchange between the encapsulation device and the air and therefore cooling said device. Consequently, the cooling of the electrical or electronic component or of the printed circuit located inside the encapsulation device can also be improved.

According to this preferred embodiment of the encapsulation device, advantageously, said at least one fin comprises at least one electric cable connecting the motor-fan unit and said at least one electrical or electronic component. The fin is therefore hollow so as to house at least one cable and preferably a plurality of cables. Thus, the cable or the plurality of cables is remarkably concealed in said fin which makes it possible to shelter the cable or cables from the air flow and therefore to limit aerodynamic disturbances. The ventilation efficiency is increased and the noise significantly reduced since the obstacles, in this case the electrical cable (s), are streamlined and sheltered from the air flow. It is perfectly possible, without departing from the scope of the invention, for said fin to include, in place of the electric cable or in addition to the electric cable, other elements such as for example electric or electronic components, sensors, etc.

Advantageously, the encapsulation device comprises two diametrically opposite fins which makes it possible to increase the effect of guiding the air flow and to be able to house more electrical cable. In other words, the fins are then distributed at 180 °. Alternatively and without departing from the scope of the invention, one could imagine three fins regularly distributed at 120 °, or even four fins regularly distributed at 90 °, or even five fins distributed at 72 ° and so on.

Advantageously, said at least one fin extends longitudinally over at least part of the frusto-conical capsule and part of the motor-fan unit. Thus, said fin can serve as a connecting element between the motor-fan unit and the encapsulation device, which further improves the aerodynamics of the device, while offering an assembly solution between these two elements. In addition, such an arrangement makes it possible to straighten the air flow as soon as possible.

Preferably, the motor-fan unit comprises a rectifier and a propeller, the rectifier is located downstream of the propeller and the rectifier comprises a plurality of blades. The blades then make it possible to remove the rotary and / or vortex component of the air flow which comes from the propeller. Remarkably, said at least one fin is aligned with at least one vane of the rectifier, which makes it possible to increase the efficiency of the rectifier.

Advantageously, the main body comprises a duct disposed around the encapsulation device and the heating device, which makes it possible to limit the heat exchanges between the heating device and an external shell constituting the housing. The air flow then circulates between the duct and the encapsulation device. Preferably, the conduit then comprises a frustoconical zone parallel to the encapsulation device. Thus, the air flow is guided between two tronconic walls which optimizes its flow. Pressure losses and noise are also minimized by the aerodynamically optimized shape of the encapsulation device and the duct.

The hair styling device can also advantageously include an ionizer to facilitate the hair styling operation, in particular by limiting the phenomenon of static electricity. In this case, the ionizer is then advantageously placed through said distal open, which remarkably makes it possible to minimize the aerodynamic impact of the ionizer since it is partially integrated in the encapsulation device. In other words, thanks to the specific shape of the encapsulation device of the invention, the air is judiciously deflected around the ionizer thus minimizing the drag of the latter. Pressure losses and noise are further minimized.

According to another embodiment of the invention, which can naturally be combined with one or other of the preceding embodiments, the encapsulation device comprises a frusto-conical capsule and a coaxial truncated support capsule and attached to said frusto-conical capsule, said support capsule being downstream of the frusto-conical capsule. In other words, the encapsulation device is separated into two capsules joined to each other. Preferably, according to this embodiment, the frusto-conical capsule and support capsule have a section of revolution, which makes it possible to present the advantages mentioned previously linked to this type of shape. Advantageously, said support capsule can then comprise an ionizer, as explained above.

According to this embodiment, the frusto-conical capsule extends between the proximal and distal openings at a first angle with the longitudinal axis of the main body, the support capsule extends between said distal opening and a final opening at a second angle with a longitudinal axis of the main body. In other words, the two successive frusto-conical capsules do not have the same angle of inclination of their wall. In other words still, the cones from which they come do not have the same angle. In this case, in order to improve the aerodynamics of the aircraft, the second angle is greater than the first angle. In other words, the second capsule, that is to say the support capsule has a greater angle than the first capsule, that is to say an angle greater than the frusto-conical capsule.

Brief description of the drawings

[Fig.l]

Figure 1 is a perspective view of a hairdressing apparatus according to the invention, in this case a blower brush, the apparatus comprising in particular two different and interchangeable accessories, one of which is assembled and the other not. [Fig.2]

Figure 2 is a perspective view of the apparatus of Figure 1 but without its accessories. In other words, Figure 2 illustrates the main body of the device. [Fig.3]

Figure 3 is a side view of the apparatus of Figure 1 with an accessory installed. [Fig.4]

Figure 4 is a top view of the apparatus of Figure 3.

[Fig.5]

Figure 5 is a longitudinal sectional view of the device of Figure 4 along the longitudinal axis X-X ', an accessory being installed on the device.

[Fig.6]

Figure 6 is a longitudinal sectional perspective view of the apparatus of Figure 4, the accessory being uninstalled.

[Fig.7]

FIG. 7 is a detailed view of FIG. 5.

[Fig.8]

Figure 8 is a perspective view of the encapsulation device of the apparatus of the preceding figures.

[Fig.9]

FIG. 9 is a perspective view of the motor-fan unit and of the device for encapsulating the apparatus of the preceding figures.

[Fig.10]

Figure 10 is a perspective view of the duct and the fan motor assembly of the apparatus of the previous figures.

[Fig.ll]

Fig 11 is a view similar to Figure 10 but in which the duct has been hidden.

[Fig.12]

Fig 12 is a detail view of Figure 6.

Description of the embodiments

The embodiment of the invention illustrated by the different figures is an embodiment in which an accessory 2 is an accessory of a hairdressing device which constitutes a rotary blower brush. This type of device, well known as such, makes it possible to combine the operations of drying and styling the hair. Indeed, as will be described later, the device can simultaneously blow air, possibly heated beforehand, and grip and set in motion the hair in order to give it a shaping, and in particular a waving or a closure.

Of course, the invention is in no way limited to this embodiment and can relate to any other hairdressing appliance, such as for example hair dryers, the construction, the problems and the challenges of which are described below. relatively close.

In the following description, the terms "upstream", "downstream", "proximal", "distal" are defined with respect to the direction of flow of the air. Thus, for example, the expression "upstream" means "before" or "at the beginning", while the expression "downstream" means "after" or "at the end", by analogy with the hydraulic theme from which these expressions. The term "proximal" means "close to the air inlet" while the term "distal" means "remote from the air inlet".

As can be seen in Figure 1, the hairdressing apparatus comprises a main body 1 which itself advantageously comprises an outer shell 12, preferably forming a gripping area for the user, such as for example a handle or a handle. One could however envisage, without departing from the scope of the invention, a main body 1 which would not necessarily constitute a handle such as for example a barrel of hair dryer.

According to the embodiment illustrated in the different figures, the main body 1 extends longitudinally along a longitudinal axis X-X ’. The main body 1 has a shape of revolution around the longitudinal axis X-X ’, for example having the shape of a tube of circular section. One could however imagine other forms for the main body 1 without departing from the scope of the invention. For example, the main body 1 could take the form of a tube of oval, square section, etc., the important thing being that the main body 1 is of hollow section to allow accommodating different components and the circulation of a air flow 3 as will be detailed later.

According to the invention, as can be seen in particular in Figures 6, 7 and 12, an air flow 3 circulates inside the main body 1. This air flow 3 is set in motion by a motor-fan unit 13 arranged inside the main body 1 as can be seen in Figures 5 to 7 or 12 for example. More specifically, the air flow 3 is advantageously drawn through an air inlet 11 preferably located at a proximal end of the main body 1. As can be seen in FIG. 7, the air inlet 11 preferably comprises a first grid 111, advantageously removable in order to allow its cleaning. Preferably, the air inlet 11 also comprises a second grid 112, preferably fixed in order to reinforce the operational safety of the device. Indeed, this second grid 112 makes it possible to prevent the hair from penetrating inside the main body 1, even in the absence of the first removable grid 111. The openings of the second grid 112 are preferably larger than those of the first grid 111, for example, the first grid 111 comprises a plurality of holes of small diameters uniformly distributed over the entire surface of the first grid 111, while the second grid 112 comprises a plurality of open angular sectors. The air thus circulates inside the main body 1 from the air inlet 11 to an air outlet 191 advantageously coaxial with the air inlet 11.

The motor-fan unit 13 used in the embodiment illustrated by the different figures therefore makes it possible to generate and set in motion the air flow 3. To this end, the motor-fan group 13 comprises a propeller 131 which can be either an axial (or helical) propeller as illustrated, a centrifugal propeller, a helico-centrifugal propeller, or even a tangential propeller without departing from the scope of the invention. The propeller 131 is rotated by a motor 133 in a manner known per se.

The fan motor group 13 preferably also includes a rectifier

132, located downstream of the propeller 131, that is to say located after the propeller 131, relative to the direction of flow of the air flow 3. As can be seen in FIG. 9, the rectifier 132 comprises a plurality of vanes 1321 arranged in the air flow 3 and intended to straighten the air flow 3, that is to say to remove from the air flow 3 the rotary and / or vortex component generated when it is set in motion by the propeller 131 to transform it, as much as possible, into a linear flow.

According to the embodiment illustrated in particular in Figure 7, the fan unit 13 further comprises a housing 134 inside which circulates the air flow 3. The housing 134, preferably in the form of a tube, is located around the motor 133, the rectifier 132 and the propeller 131 and consequently makes it possible to channel the air flow 3 generated by the propeller 131 inside the housing 134, between the latter and the motor 133 while constraining the air flow 3 to pass through the rectifier 132. In other words, the air flow 3 circulates around the motor 133, which in particular makes it possible to cool the latter, and inside the rectifier 132. The housing 134 thus avoids direct contact between the air flow 3 and the external shell 12 which limits the vibrations transmitted to the latter and therefore contributes to sound insulation, thus limiting the noise emitted by the hairdressing appliance.

As can be seen in Figure 5 for example, the hairdressing apparatus comprises a heating device 18 for heating the air flow 3. More specifically, the heating device 18 is arranged inside of the main body 1, downstream of the motor-fan unit 13. Thus, the air flow 3 set in motion by the motor-fan group 13 is sucked in at ambient temperature through the air inlet 11 and then passes to the through the heating device 18 which has the effect of heating the air flow 3 in order to eject hot air on the user's hair to on the one hand dry it and on the other hand shape it .

More specifically, the heater 18 includes a support of mica 182, or any other insulating material, in the form of a cross or X as can be seen in Figures 5 and 6. The heater 18 includes furthermore a conductive wire (not shown) wound around the support of mica 182. An electric current flows inside this wire which has the effect of producing heat by the Joule effect, as is well known as such as in hairdressing appliances.

The heating device 18 preferably further comprises a tube of mica 181, or any other insulating material, disposed between the support of mica 182 and the outer shell 12 as can be seen in Figure 7. This tube of mica 181 allows thermal insulation of the external shell 12, in contact with the user's hand, from the heat emitted by the heating device 18.

Advantageously, as can be seen in Figure 7, the main body 1 also includes a conduit 121 disposed between the heating device 18 and the outer shell 12. More specifically, the conduit 121 is disposed between the tube mica 181 and the outer shell 12, which limits the heat transmitted to the outer shell 12, which is in contact with the hand of the user. Preferably, the duct 121 extends at least around the heating device 18, and advantageously at least partially around the motor-fan unit 13. Thus, the air flow 3 circulates inside the duct 121. The duct 121 thus has a dual functionality: on the one hand, it limits the transfer of heat from the heating device 18 or the air flow 3 to the external shell 12 of the main body 1, thereby improving the safety and comfort of use of the device, and on the other hand, it channels the air flow 3 inside the main body 1. In other words, there is therefore no contact between the air flow 3 and the shell external 12, which, in addition to the thermal insulation effect explained above, also provides, quite remarkably, a significant sound insulation effect, thus limiting the noise emitted by the hairdressing appliance.

Remarkably, according to the embodiment illustrated in Figure 7, the conduit 121 is arranged coaxially with the housing 134, following the latter, the conduit 121 and the housing 134 being arranged end to end so as to guarantee airtightness. Thus, the air flow 3 passes continuously between the housing 134 and the duct 121 which guarantees on the one hand the continuity of the air flow 3 while minimizing the pressure losses, but also guarantees optimal thermal insulation vis-à-vis the outer shell 12. In addition, the sound insulation is improved since the air flow 3 is not in contact with the outer shell 12.

More specifically, and preferably, the conduit 121 is located between the mica tube 181 and the outer shell 12, extending around the mica tube 181. This construction thus makes it possible to have two nested insulators l 'one inside the other, superimposed, in this case the mica tube 181 and the conduit 121, around the heating device 18 which guarantees optimal thermal insulation of the external shell 12.

Advantageously, the conduit 121 also serves as a support for the outer shell 12 which can then be made in two parts. In fact, as can be seen in FIG. 3, the outer shell 12 comprises a lower half-shell and an upper half-hull joined together with each other around the duct 121, and more precisely on either side of it. 'an assembly rib 1211. The assembly rib 1211 then serves as a support for the two preceding half-shells, which facilitates the assembly operations of the hairdressing appliance while improving its mechanical strength.

Preferably, the hairdressing apparatus also comprises an accessory 2, generally removably mounted on the main body 1. Preferably, as can be seen in FIG. 1, the hairdressing apparatus comprises a plurality of accessories 2, for example two accessories, advantageously different from each other. It is thus possible for the user to choose which accessory he wants to use, according to the shaping of the hair he wishes, and to install it on the main body 1 of the device. Figure 1 illustrates two accessories 2 of different diameters, for example 38 mm and 50 mm, which allows to make waves or curls in hair of different diameters but also to adapt to the length of the hair of the user . The length of the accessories 2 does not vary and remains, for example, between 120 mm and 160 mm, for example being substantially equal to 140 mm. Preferably, the accessory offers a useful length, that is to say a length intended to be in contact with the hair of the order of 100 mm.

Hairdressing accessory 2 therefore extends longitudinally along the axis X-X ’between a proximal end and a distal end according to the preferred dimensions above.

The accessory 2 is mounted movable in rotation relative to the main body 1 so as to be able to wrap the hair around the accessory 2 to give them a shaping, in particular a waving or curling. As can be seen in FIG. 1 in particular, the accessory 2 is mounted coaxially with the main body 1.

According to the illustrated embodiment, the accessory 2 comprises an air inlet 21 intended to cooperate with the air outlet 191 of the main body 1 so as to pass the air from the main body 1 to the accessory 2. Preferably, the proximal end comprises the air inlet 21. The accessory 2 also has a hollow shape, preferably a tube shape, thus defining an interior air circulation chamber. Thus, the air flow 3 coming from the main body 1 and set in motion by the motor-fan unit 13 can enter inside the accessory 2. The accessory 2 also comprises a radial air outlet 23 designed to eject the air radially, that is to say substantially perpendicular to the longitudinal axis XX ', as can be seen for example in FIG. 1. In other words, the accessory 2 forms a tube intended to receive preferably warm air inside, said tube comprising a radial air outlet 23 for ejecting the air. Advantageously, as can be seen in the illustrated embodiment, the air outlet 23 comprises a plurality of openings, in this case holes, the diameter of which can be variable depending on their position relative to the flow d 'air 3. Thus, preferably, the diameter of the different holes will be decreasing in the direction of the air flow 3: in other words, the holes with the largest diameter are located near the air inlet 21 while the smaller diameter holes are located opposite the air inlet 21, for example near a gripping end piece 24. In other words, according to this advantageous embodiment, the section openings of the air outlet 23 decreases according to the direction of flow of the air flow 3 within the accessory 2, which makes it possible to guarantee an optimal drying efficiency of the hair insofar as the reduction in the section of the air outlet openings 23 compensates for the pressure drop in the air flow 3 d increase the distance from the fan unit 13.

As can be seen in Figure 6, the accessory 2 comprises an external mandrel 22, preferably made of heat conductive material such as a metallic material for example, in order to optimize the heat transfer to the hair, and thus improve formatting. Indeed, as explained above, the air flow 3 is heated in the main body 1 by the heating device 18 and is then found inside the accessory 2 which it will heat. The external mandrel 22 then advantageously comprises the air outlet 23 described above.

The accessory 2 is preferably heated insofar as the air flow 3 which passes through it is itself heated by the heating device 18 as explained above. In addition, the external mandrel 22 of the accessory 2 will make it possible to diffuse the heat transmitted by the air flow 3 to the hair and therefore allow the accessory 2 to give the hair a shape.

The main body 1 also advantageously comprises an accessory support 19 intended to receive and rotate one of said accessories 2. According to the embodiment of FIG. 2, the accessory support 19 extends longitudinally and coaxially with the main body 1, from the air outlet 191 towards a distal end opposite the air inlet 11. The length of the accessory support 19 is preferably substantially equal to the length of the accessories 2.

As illustrated in Figure 2, the accessory support 19 advantageously comprises a housing 193 of substantially cylindrical shape. The accessory support 19 further comprises an engine group 196, visible in FIGS. 5 and 6, remarkably arranged inside the casing 193. Thus the engine group 196 is arranged inside the accessory 2, more precisely in the interior chamber of the accessory 2. Said motor group 196 is then intended to set in motion the accessory 2 installed on the accessory support 19 so that the accessory 2 is driven in a rotational movement around the 'longitudinal axis X-X' and relative to the main body 1.

The accessory support 19 preferably comprises, at its distal end, a rotational drive device 194 intended to correspond with a complementary device for receiving the accessory 2 in order to transmit the torque from the motor group 196 to the accessory 2. In a manner known as such, the rotary drive device 194 comprises for example grooves which correspond with grooves arranged inside the gripping end piece 24 of the accessory 2. One could of course imagine any other rotational drive device 194 known to those skilled in the art, such as, for example, a key, a pin, etc. As can be seen in FIG. 2, the accessory support 19 advantageously comprises a coupling device 195 situated at a distal end of the accessory support 19 which comprises for example a groove or a circular groove produced on a motor shaft 197.

As can be seen in Figure 2, the accessory support 19 advantageously comprises a device 192 for guiding the air flow 3 which extends longitudinally from the air outlet 191 and opposite to the air inlet 11. This guide device 192 may for example include ribs or arches. The guide device 192 is integral with the main body 1 and is preferably assembled with the conduit 121 which contributes to the fixing of the accessory support 19 on the main body 1 while letting through and directing the flow of air 3 emitted by the air outlet 191. Preferably, the guide device 192 is mounted substantially end to end with the heating device 18, without however being in contact with the latter so that the guide device 192 is not damaged by heat .

The main body 1 also includes a control and supply device 16 as can be seen for example in Figure 7 or Figure 4. In a manner known as such, this control and supply device 16 notably includes a speed switch 161 allowing the user to control the speed of rotation of the motor 133 and therefore the speed of flow of the air flow 3. Preferably, this speed switch 161 is located near the entrance 11 and the motor 133 and can take the form of a sliding switch with several positions.

As shown in Figure 4, the main body 1 may also include a rotation switch 162 allowing the user to select the direction of rotation of the power unit 196 and therefore control the direction of rotation of the accessory 2 that it will have previously mounted on the accessory support 19 as described above. This rotation switch 162 also makes it possible to control the starting or stopping of the motor group 196 and therefore the starting or stopping of the accessory 2. According to the illustrated embodiment, the selection of the direction of rotation of accessory 2 allows the user to choose which direction will be the ripples or curls that he will create on his hair. The rotation switch 162 is disposed near the air outlet 191, that is to say near the accessory 2 so as to be easily actuated by the thumb of the user who allows the latter to precisely control the rotation and stopping of the motor unit 196 and therefore the rotation and stopping of the accessory 2 during its styling operation.

In order to improve ergonomics and limit the risk of knots or twists in the electrical cord supplying the hairdressing apparatus of the invention, the main body 1 also advantageously comprises a rotary cord 163 which allows free rotation of the power supply cord within the main body 1, therefore not impeding the movements of the user. This device is well known as such, so it is not detailed here.

Preferably, the accessory 2 comprises a cold end piece 24, 25 designed to remain at a temperature preferably not exceeding the ambient temperature of 50 ° C and ideally not exceeding the ambient temperature of 5 ° C to 15 ° C this which allows the user to be able to handle this cold nozzle 24, 25 directly by hand without the risk of getting burned. The cold end piece 24, 25 is therefore intended to be grasped by the user of the hairdressing appliance, advantageously having a temperature between 20 and 50 ° C, preferably around 30 ° C.

Preferably, the cold end piece 24, 25 comprises two separate sub-assemblies: a grip end 24 and a plug 25. The cold end piece 24, 25 advantageously constitutes one end of the hairdressing appliance. The plug 25 makes it possible to prevent the air flow 3 circulating inside the accessory 2 from exiting through the distal end.

The gripping endpiece 24 allows the user to grasp the accessory 2 including when the latter is set in motion. As can be seen in Figure 1, this grip 24 is coaxial with the main body 1 and opposite the air inlet 11 of the latter which allows good ergonomics of the device.

The main body comprises at least one electrical or electronic component 15 or even electromechanical, or even possibly of connectors. This electrical or electronic component 15 generally performs at least one filtering function and in particular electromagnetic filtering. Said electrical or electronic component 15 can also be intended to control at least one parameter of the motor-fan unit 13, or possibly the heating device 18.

The main body 1 may also include a printed circuit which itself contains said at least one electrical or electronic component 15, and preferably a plurality of electrical or electronic components 15. The expression “printed circuit” can here be understood as substantially synonymous with the expression “integrated circuit” or the English expression PCB (“printed circuit board”), without however being limited to these precise definitions. Indeed, it is preferable to include any support comprising one or more electrical or electronic or even electromechanical components. The printed circuit can thus include, in an illustrative and non-exhaustive manner, functions of filtering, rectifying the current, switching and interconnection, or even regulating temperature, speed, etc.

Relatively conventionally, the at least one electrical or electronic component 15, or the printed circuit, is connected by electrical wires to one or the other or to a plurality of the other components of the device and in particular, the control and supply device 16, the motor-fan unit 13, the heating device 18, the motor group 196, etc.

The main body 1 also includes an encapsulation device 14 inside which is arranged said at least one electrical or electronic component 15 so as to isolate said at least one electrical or electronic component 15 from the air flow 3 In other words, said at least one electrical or electronic component 15, or the printed circuit, is arranged inside a capsule, that is to say inside a casing, or a casing preferably sufficiently tight, or at least designed to isolate said at least one electrical or electronic component 15 from the air flow 3. Thus, the air flow 3 does not come into contact with the printed circuit or at least one electrical or electronic component 15, elements which constitute as many obstacles to its good flow and generator of turbulence and therefore of significant pressure losses and also of noise. Consequently, thanks to this encapsulation of the at least one electrical or electronic component 15, or even of the printed circuit, the noise generated by the air flow 3 moving inside the main body 1 is substantially reduced. In other words, the geometry of said at least one electrical or electronic component 15, or the geometry of the printed circuit, does not affect good air circulation.

In addition, the shape of the encapsulation device 14 has been particularly studied in order to minimize the aeraulic impact of the device. Thus, the encapsulation device 14 is of conical or frusto-conical shape, which makes it possible to remarkably minimize the impact of the encapsulation device 14 on the flow of the air flow 3. More precisely, thanks to this shape conical or frusto-conical, the pressure drops are minimized and the turbulence is limited which contributes significantly to the improvement of the flow of the air flow 3 but also to the reduction of the noise generated by the flow of the flow d 'air 3. In other words, the particular shape of this frusto-conical or conical encapsulation device 14 makes it possible to minimize the disturbance of the air flow 3 and to significantly improve the ventilation efficiency of the hairdressing appliance. . It is thus possible, for example, thanks to the invention, to be able to use a less powerful, less efficient engine, that is to say a less expensive engine for an equivalent level of performance, or else, for an equivalent engine, d 'Significantly increase the level of performance of the device, and in particular the air flow rate 3.

According to the illustrated embodiment, as can be seen particularly in Figure 8, the encapsulation device 14 has a section of revolution, around the longitudinal axis X-X ’. Such a shape has increased aeraulic and aerodynamic performance for a limited space. In addition, as shown in FIG. 7, the encapsulation device 14 is coaxial with the motor-fan unit 13.

More specifically, as shown in Figure 8, the encapsulation device 14 comprises a frusto-conical capsule 141 extending longitudinally between a proximal opening 1411 and a distal opening 1412. The proximal opening 1411 advantageously constitutes the inlet through which the air flow 3 enters the interior of the encapsulation device 14, while the distal opening 1412 constitutes an outlet through which the air flow 3 leaves the frusto-conical capsule 141. As the illustrate Figures 7 and 8, the distal opening 1412 is of smaller section than the proximal opening 1411. In other words, the proximal opening 1411 is larger than the distal opening 1412. According to the illustrated embodiment , the encapsulation device 14 is a truncated cone so that the proximal openings 1411 and distal opening 1412 form circles of different diameters. Preferably, the diameter of the proximal opening 1411 is between 21 mm and 30 mm while the diameter of the distal opening 1412 is between 10 mm and 20 mm. The proximal opening 1411 is then oriented towards the motor-ventilator group 13 and is even preferably in contact with the latter. In other words, the cone narrows towards the downstream, the point is located towards the downstream, which optimizes the air circulation. More precisely, as can be seen in FIG. 7, the encapsulation device 14 is adjusted in a sealed manner to the motor 133. In fact, the diameter of the distal opening 1412 is identical to the diameter of the motor 133 which allows the encapsulation device 14 to be arranged in the continuity of the motor 133, thus offering a smooth and continuous transition to the air flow 3 which has just flowed around the motor 133. Such an adjustment can for example be carried out by means of a rebate. The frusto-conical capsule 141 extends between the proximal 1411 and distal 1412 openings at a first angle a with the longitudinal axis (X-X ') of the main body 1. This angle a thus represents the angle of inclination of the cone generator of the frusto-conical capsule 141 and between 1 ° and 10 °, advantageously at 5 and 10 °, for example being preferably substantially equal to 5 ° or 7 °.

Preferably, the encapsulation device 14 is located downstream of said motor-fan unit 13 in the direction of flow of the air flow 3. In other words, when the air flow 3 circulates at l inside the main body 1, the latter meets the motor-fan unit 13 before the encapsulation device 14. More precisely, as can be seen in FIG. 7, the encapsulation device 14 is located between the motor unit -fan 13 and the heating device 18. Thus, the encapsulation device 14 provides a junction between these two components. This arrangement, combined with the conical or frusto-conical shape of the encapsulation device 14 allows remarkable aerodynamic efficiency by providing a smooth, gradual and continuous transition between the motor-fan unit 13, and in particular the motor 133 around which the air flow 3 as explained above, and the heating device 18, as can be seen in Figure 11 in particular. The turbulence in the air flow 3 is limited, the flow improved, the pressure drops limited and the noise reduced.

Advantageously, the conduit 121 is also arranged around the encapsulation device 14. In other words, the encapsulation device 14 is disposed inside the conduit 121, which means that the flow d air 3 circulates between the conduit 121 and the encapsulation device 14. In a particularly advantageous manner, the conduit 121 comprises a frusto-conical zone 1212 parallel to the encapsulation device 14. In other words, over a certain length, preferably between 24 mm and 44 mm and preferably equal to 34 mm, the conduit 121 and the encapsulation device 14 form portions mutually parallel and inclined relative to the longitudinal axis XX ′, as can be seen in figure 7.

In addition, as shown in Figure 10, the conduit 121 is mounted coaxially and end to end with the housing 134 of the motor fan unit 13. A seal is formed between the housing 134 and the conduit 121 ce which allows the air to remain inside these elements, without being able to come into contact with the external shell 12. Thus, the vibrations and the heat transmitted to the external shell 12 are minimized, thus limiting heat and noise, this which improves the user comfort of the device. Finally, the housing 134 attached to the duct 121 constitutes a sealed circulation tunnel for the air flow 3 between the air inlet 11 and the air outlet 191.

Advantageously, the encapsulation device 14 comprises at least one fin 142 projecting from the encapsulation device 14 and extending longitudinally in the direction of the air flow 3, as can be seen in the figure 8 in particular. By fin means any element projecting into the air flow 3 over a length large enough to contribute to impact the air flow 3. For example the fin 142 may be constituted by a longitudinal rib. Preferably, the length of the fin 142 is between 16 mm and 36 mm and is advantageously substantially equal to 26 mm, while its height is around 9 mm.

Preferably, the encapsulation device 14 comprises two diametrically opposite fins 142 as illustrated in FIG. 8. Preferably, said at least one fin 142 is in contact with the conduit 121 and serves to maintain the encapsulation device 14 relative to conduit 121 and vice versa. In other words, said at least one fin 142 makes it possible to position the encapsulation device 14 inside the duct and to contribute to the mechanical strength of the assembly. Naturally, it will be understood that the greater the number of fins 142, the better will be the rigidity and the mechanical strength of the assembly.

As illustrated in FIG. 9, said at least one fin 142 extends longitudinally over at least part of the frusto-conical capsule 141 and part of the motor-fan unit 13, thus offering greater length in contact with the air flow 3 which improves its longitudinal guidance, and in particular the straightening of the latter. In addition, this at least one fin 142 makes it possible to assemble the frusto-conical capsule 141 on the motor 133 as illustrated in FIG. 9. Advantageously the portion of the length of the fin 142 extending over the encapsulation device 14 is equal to the portion of the length of the fin 142 extending over the motor 133.

In addition, said at least one fin 142 is particularly advantageously aligned with at least one blade 1321 of the rectifier 132. In the case where the frusto-conical capsule 141 comprises a plurality of fins 142, each of them they are judiciously aligned with a blade 1321. This judicious alignment makes it possible to remarkably improve the efficiency of the rectifier 132, since the air flow 3 will follow a blade 1321 extended by a fin 142. The active length participating in the straightening of the flow air 3 is thus maximized, which makes it possible to limit the number of blades 1321 or fins 142 and therefore to limit the pressure losses but also the noise of the device, since allowing the reduction of the front surface d obstacle to the proper flow of air flow 3.

Quite remarkably, said at least one fin 142 comprises at least one electric cable connecting the motor-fan group 13 and said at least one electrical or electronic component 15, which makes it possible, as explained previously, to conceal the or the electric wires vis-à-vis the air flow 3.

Preferably the width (or the thickness) of said at least one fin 142 is between 2 and 5 mm and is advantageously equal to 3 mm, which makes it possible to limit the front surface opposing the flow of air 3 while allowing, in the preferred case where said at least one fin 142 is hollow, to contain at least one cable and advantageously a plurality of cables.

The main body 1 may also include an ionizer 17 which makes it possible to significantly improve the shaping of the hair and / or the ease of implementation. The ionizer 17 is then placed through the distal opening 1412, as illustrated in FIGS. 8 and 9. As mentioned previously, the ionizer 17 is at least partially concealed from the air flow 3, and in addition, such arrangement makes it possible to limit the size of the device thanks to the overlapping of the different parts. More specifically, the encapsulation device 14 comprises a frusto-conical capsule 141 and a support capsule 143 coaxial frusto-conical and contiguous to said frustoconical capsule 141. The support capsule 143 then also has a section of revolution, is located downstream of the frusto-conical capsule 141, and comprises the ionizer 17. Thus, the ionizer 17 is partially disposed inside the frusto-conical capsule 141 and disposed inside the support capsule 143 while projecting from the downstream of the support capsule 143.

The support capsule 143 extends between said distal opening 1412 and a final opening 1431 at a second angle β with the longitudinal axis X-X ’of the main body 1 which is greater than the first angle a. In other words, the angle of the generator cone of the truncated-conical support capsule 143 is greater than that generating the truncated conical capsule 141, which means that the truncated-conical support capsule 143 is more inclined than the truncated-conical capsule 141, or that the frusto-conical capsule 141 is closer to a cylinder than the frusto-conical support capsule 143. Preferably the second angle β is dependent on the first angle a, for example according to the following formula: β = α + γ, with γ between 1 ° and 10 °, advantageously between 4 ° and 9 ° and preferably equal to 6 °. This increase in the second angle β relative to the first angle a makes it possible, quite remarkably, to avoid the separation of the boundary layer relative to the preceding surface, in this case relative to the conical trunk capsule 141. For example the second angle β is between 11 ° and 20 °, advantageously between 9 ° and 15 ° while preferably being substantially equal to 12 °. This greater inclination of the support capsule 143 makes it possible to reduce the length of the latter, while guaranteeing the good maintenance of the ionizer 17, without opposing resistance to the air flow 3, and therefore minimizing the pressure drops.

All of these components, namely, the ionizer 17, the support capsule 143, the frusto-conical capsule 141, but also the motor-fan unit 13, the duct 121, the heating device 18 are all advantageously coaxial with the longitudinal axis XX '.

Claims (1)

Claims [Claim 1] Hairdressing appliance comprising a main body (1) inside which an air flow (3) circulates, said main body (1) comprising a motor-fan unit (13) intended to set in motion the air flow (3), at least one electrical or electronic component (15), characterized in that the hairdressing apparatus comprises an encapsulation device (14) inside which said at least one electrical or electronic component (15) is disposed. ) so as to isolate the latter from the air flow (3), the encapsulation device (14) being of conical or frusto-conical shape. [Claim 2] Hairdressing appliance according to the preceding claim, characterized in that the encapsulation device (14) has a section of revolution. [Claim 3] Hairdressing appliance according to any one of the preceding claims, characterized in that the encapsulation device (14) is coaxial with the motor-fan unit (13). [Claim 4] Hairdressing appliance according to any one of the preceding claims, characterized in that the encapsulation device (14) comprises a frusto-conical capsule (141) extending longitudinally between a proximal opening (1411) and a distal opening (1412) of section smaller than the proximal opening (1411), said proximal opening (1411) being oriented towards the motor-fan unit (13), and is preferably in contact with the motor-fan unit (13). [Claim 5] Hairdressing appliance according to the preceding claim, characterized in that the encapsulation device (14) is located downstream of said fan unit (13) in the direction of flow of the air flow (3). [Claim 6] Hairdressing appliance according to any one of the preceding claims, characterized in that the appliance comprises a heating device (18) and in that the encapsulation device (14) is located between the motor-fan unit (13) and the heating device (18). [Claim 7] Hairdressing appliance according to any one of the preceding claims, characterized in that the encapsulation device (14) comprises at least one fin (142) projecting from the encapsulation device (14) and extending longitudinally in the direction d air flow [Claim 8] Vri · Hairdressing appliance according to the preceding claim, characterized in that said at least one fin (142) comprises at least one electric cable connecting the motor-fan unit (13) and said at least one electrical or electronic component (15). [Claim 9] Hairdressing appliance according to either of Claims 7 and 8, characterized in that the encapsulation device (14) comprises two diametrically opposite fins (142). [Claim 10] Hairdressing appliance according to any one of claims 7 to 9 attached to claim 4, characterized in that said at least one fin (142) extends longitudinally over at least part of the frusto-conical capsule (141) and part of the motor-fan unit (13). [Claim 11] Hairdressing appliance according to any one of Claims 7 to 10, characterized in that the motor-fan unit (13) comprises a stator (132) and a propeller (131), the stator (132) being located downstream of the propeller (131), the stator (132) comprising a plurality of blades (1321), said at least one fin (142) being aligned with at least one blade (1321) of the stator (132). [Claim 12] Hairdressing appliance according to claims 1 and 6 characterized in that the main body (1) comprises a duct (121) arranged around the encapsulation device (14) and the heating device (18), the air flow ( 3) flowing between the conduit (121) and the encapsulation device (14). [Claim 13] Hairdressing appliance according to the preceding claim, characterized in that the duct (121) comprises a truncated-conical zone (1212) parallel to the encapsulation device (14). [Claim 14] Hairdressing appliance according to claim 4 characterized in that an ionizer (17) is arranged through said distal open (1412). [Claim 15] Hairdressing appliance according to any one of Claims 1 to 13, characterized in that the encapsulation device (14) comprises a frusto-conical capsule (141) and a support capsule (143) coaxial frusto-conical and attached to said frusto-conical capsule (141), said support capsule (143) being downstream of the frusto-conical capsule (141). [Claim 16] Hairdressing appliance according to the preceding claim, characterized in that the frusto-conical capsule (141) and support capsule (143) have a section of revolution. [Claim 17] Hairdressing appliance according to any one of claims 15 or 16 characterized in that the support capsule (143) comprises an ionizer (17). [Claim 18] Hairdressing appliance according to claims 4 and 15, wherein the frusto-conical capsule (141) extends between the proximal openings (1411) and distal (1412) at a first angle (a) with a longitudinal axis (X-X ') of the main body (1), the support capsule (143) extends between said distal opening (1412) and a final opening (1431) at a second angle (β) with the longitudinal axis (X-X ') of the main body (1), characterized in that the second angle (β) is greater than the first angle (a).