EP3902441B1 - Appareil de coiffure a module electronique refroidi - Google Patents

Appareil de coiffure a module electronique refroidi Download PDF

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Publication number
EP3902441B1
EP3902441B1 EP19828790.6A EP19828790A EP3902441B1 EP 3902441 B1 EP3902441 B1 EP 3902441B1 EP 19828790 A EP19828790 A EP 19828790A EP 3902441 B1 EP3902441 B1 EP 3902441B1
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EP
European Patent Office
Prior art keywords
handle
blower
blowing head
air flow
electronic module
Prior art date
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Active
Application number
EP19828790.6A
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German (de)
English (en)
French (fr)
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EP3902441A1 (fr
Inventor
Matthieu FUIN
Jérémy DELHOM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
Original Assignee
SEB SA
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Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Publication of EP3902441A1 publication Critical patent/EP3902441A1/fr
Application granted granted Critical
Publication of EP3902441B1 publication Critical patent/EP3902441B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands

Definitions

  • the present invention relates to the general technical field of hairdressing appliances, for example for domestic use, and more specifically to the field of electric hairdressing appliances designed to blow a flow of air in order to dry and/or facilitate styling hair.
  • Hairdressing appliances for example of the hair dryer type, have been known for a long time, designed to allow a user to dry and/or shape their hair by blowing a flow of air towards the hair.
  • known hairdressing devices include a blowing head supplied with air by a motorized fan unit, as well as generally a heating element making it possible to obtain a flow of hot air to facilitate drying of the hair.
  • the objects assigned to the invention therefore aim to remedy these drawbacks and to propose a new hairdressing device which, while being compact in construction, has improved reliability.
  • Another object of the invention aims to propose a new hairdressing device of particularly simple construction.
  • the hairdressing appliance 1 is typically intended for use in a domestic setting by a user lacking particular professional skills in hairdressing, that is to say both in terms of drying and styling, hair shaping.
  • the hairdressing device 1 is preferably designed to be grasped and manipulated by hand, it is therefore advantageously a manual hairdressing device, preferably portable.
  • the hairdressing appliance 1 forms a hair dryer (or hair dryer), which allows a user to dry their wet or damp hair by blowing a flow of forced, hot or cold air towards the hair, and to facilitate shaping of the hair.
  • the invention is however not limited to this specific embodiment and it is for example entirely possible that the hairdressing device forms a blowing hairbrush or any other hairdressing appliance with a function involving blowing a flow of air onto the user's hair, and which could be more specifically used for styling purposes, for example in direct contact with the hair (brushing, smoothing, etc.).
  • the hairdressing appliance 1 comprises a blower module 2 designed to generate a (forced) air flow, and a blower head 3, via which the air flow generated by the blower module 2 is directed out of the hairdressing appliance 1 so that it can be projected towards the user's hair.
  • the blowing head 3 is typically provided with at least one air outlet, through the opening of which the air flow generated by the blowing module 2 is directed out of the hairdressing appliance 1 .
  • the hairdressing appliance 1 also comprises a handle 4 (or handle) for manual gripping, intended to be grasped by the user to manipulate the hairdressing appliance 1, and to which the blowing head 3 is connected.
  • the handle 4 extends between a first end 5 and an opposite second end 6, preferably longitudinally along a first axis A-A'.
  • the handle 4 is formed of a generally tubular part (for example of circular or elliptical average section, constant or not), shaped and dimensioned to ensure good grip by the user.
  • Said blowing head 3 extends the handle 4 from the second end 6, and thus preferably forms an end part of the hairdressing appliance 1, as in the case of the preferred embodiment illustrated in the figures.
  • the blowing head 3 is preferably designed to remain permanently attached to the handle 4, the blowing head 3 thus not being provided (in normal use ) to be dissociated from the handle 4 of the hairdressing appliance 1 by the user.
  • blower module 2 of the hairdressing appliance 1 is arranged within the handle 4 or is assembled to the handle 4 at the first end 5 of the latter, as illustrated in the figures.
  • blower module 2 so as to generate an air flow with a high flow rate, economically, and without impacting the general size of the blower head 3 and the handle 4.
  • an arrangement of the blower module 2 and the blower head 3 at each of the ends 5, 6 of the handle 4 advantageously makes it possible to better balance the weight of the hairdressing appliance 1, by a distribution of the masses on both sides. other of the handle 4, which contributes to the comfort of use of the latter.
  • the handle 4 can advantageously comprise a guide channel 7 for the air flow generated by the blower module 2 towards the blower head 3.
  • Said guide channel 7 advantageously channels said air flow through the handle 4, typically in the direction of the first end 5 of the handle 2 towards the second end 6 of the latter, as illustrated as an example in Figure 5 .
  • the blower module 2 of the hairdressing appliance 1 preferably comprises a motor-fan group 8, itself comprising an electric motor 9.
  • the motor-fan group 8 may comprise a classic axial fan with propeller or helicoid.
  • the motor-fan group 8 can advantageously comprise a fan of the helico-centrifugal or centrifugal type.
  • the use of such a helico-centrifugal or centrifugal fan advantageously makes it possible to obtain, with equivalent dimensions, a high internal pressure with an air flow rate substantially similar to that of a propeller or helical fan, but with a lower rotation speed and therefore less noise generated by the motor-fan group 8.
  • the electric motor 9 of the motor-fan group 8 is a brushless electric motor (so-called “ brushless ” motor or self-controlled synchronous machine with permanent magnets).
  • a brushless electric motor 9 is generally more robust, more reliable and lighter than a conventional brushed electric motor. Less noisy and more energy efficient, it also offers greater flexibility and better precision in adjusting its rotation speed.
  • the motor-fan group 8 advantageously comprises a fan 10 of the centrifugal type, and its electric motor 9 is a brushless electric motor, as proposed above.
  • the blower module 2 further comprises an internal working chamber 11 in the shape of a volute, within which the motor-fan group 8 is housed.
  • Said working chamber 11 can, as illustrated in Figure figure 5 , be defined by the internal walls of two half-shells 12, 13 assembled together (for example, by screwing) and secured to the handle 4 at the level of the first end 7 of the latter.
  • the blower module 2 is provided with an air inlet 14, through which the ambient air is sucked axially by the fan 10 within the working chamber 11, and an air outlet which is advantageously connected to the channel guide 7 of air from the handle 4 and by which the sucked air is discharged radially out of the working chamber 11.
  • the blower module 2 further preferably comprises a grid 15 (possibly removable and repositionable) for protecting the air inlet 14 of the working chamber 11.
  • the hairdressing appliance 1 also includes a heating element 16 designed to raise the temperature of the air flow generated by the blower module 2.
  • the heating element 16 can be arranged within the blowing head 3 or within (i.e. inside) of handle 4 of the latter. More advantageously, the heating element 16 is arranged (at least in part) within the handle 4, and even more advantageously within the guide channel 7 of the handle 4, as in the embodiment preferential illustrated in the figures, so as to be interposed in the air flow generated by the blower module 2.
  • a configuration makes it possible in particular to reduce the bulk and weight of the blower head 2, and to simplify the design of the latter.
  • the heating element 16 comprises at least one electrical heating resistance formed of a winding of a metallic conductive wire (for example, nichrome) around an insulating core.
  • the heating element 16 is more precisely in the form of a winding of a metallic conductive wire (not illustrated) around an insulating core 17 (for example, made of mica) of cruciform section and provided, at its ends, with fixing fins.
  • the hairdressing appliance 1 further comprises a thermal insulator 18, for example a tubular part with a circular base, within which the heating element 16 is mounted, and which in particular makes it possible to protect the user from the risk of burns by limiting the heating of the handle 4.
  • a thermal insulator 18 for example a tubular part with a circular base, within which the heating element 16 is mounted, and which in particular makes it possible to protect the user from the risk of burns by limiting the heating of the handle 4.
  • the interior wall of the tubular thermal insulator 18 can advantageously define all or part of the guide channel 7 of the air flow mentioned above.
  • the blowing head 3 is fixedly mounted relative to the handle 4. In this case, the blowing head 3 is then preferably provided with a single air outlet.
  • the blowing head 3 is, on the contrary, mounted movable relative to the handle 4.
  • the blowing head 3 can then, for example, be provided with a single air outlet.
  • the mobile nature of the head blower 3 then allows for example to modify the direction of the air flow blown by the hairdressing appliance 1, depending on the position of the blowing head 3 relative to the handle 4.
  • the blowing head 3 is provided, not with a single air outlet, but with at least a first air outlet 19 and a second air outlet 20, distinct (and therefore different , not combined) from each other.
  • the blowing head 3 can then advantageously be mounted movable relative to the handle 4 between at least a first position in which the air flow generated by the blowing module 2 is blown by the blowing head 3 via the first air outlet 19, and a second position in which said air flow is blown by the blowing head 3 via the second air outlet 20 of the latter.
  • the hairdressing appliance 1 is thus advantageously designed and configured to allow, by a movement (that is to say by a modification of the arrangement, the positioning) of the blowing head 3 relative to the handle 4, to alternately select one or the other of the first 19 and second 20 air outlets of the blowing head 3 through which the air flow will be blown by the blowing head 3.
  • the blowing head 3 can be mounted movable to rotate relative to the handle 4, around a second axis B-B' of rotation, as in the embodiment illustrated in the figures.
  • the blowing head 3 is then mounted relative to the handle 4 according to a pivot connection, so as to be able to rotate relative to the handle 4.
  • the hairdressing appliance 1 can thus advantageously be designed and configured to allow the user, for example pivoting of the blowing head 3 relative to the handle 4, to alternately select one or the other of the first 19 and second 20 air outlets of the blowing head 3 through which the air flow will be blown by the blower head 3.
  • the blowing head 3 is mounted to rotate relative to the handle 4 around said second axis B-B', which coincides with the first axis AA' of extension of the handle 4, as in the embodiment illustrated in figures.
  • the second axis BB' of rotation could be parallel to said first axis AA' (and more or less offset from the latter).
  • the kinematics of the blowing head 3 are thus simple and reliable, and allow intuitive handling of the hairdressing appliance 1 by the user.
  • the second axis BB' intersects said first axis AA' at an angle typically between 5 and 15°.
  • blowing head 3 could, according to an alternative variant not illustrated in the figures, be mounted movable in translation relative to the handle 4, for example along an axis of translation which would be parallel or coincident with the first axis A-A' of extension of the handle 4, or even still along an axis of translation which would on the contrary be orthogonal to said first axis A-A' of extension of the handle 4. It could then be for example a movement in pure translation, of the slide connection type, or further helical translational movement of the blowing head 3 relative to the handle 4.
  • the blowing head 3 is provided, as mentioned above, with at least a first air outlet 19 and a second air outlet 20, these preferably have openings of different geometries.
  • the useful air passage section of the opening of the first air outlet 19 is then defined by a contour (or a plurality of contours) of shape different from the shape of the contour (or of the plurality of contours) which respectively defines the useful air passage section of the opening of the second air outlet 20.
  • the air flow blown by the blowing head 3 will therefore affect a different profile depending on the outlet air 19, 20 selected, so that the user can use the hairdressing appliance 1 in at least two different blowing configurations.
  • the first air outlet 19 and second air outlet 20 are advantageously designed to blow, project, two air flows of different profiles, respectively a first air flow and a second air flow, each of the latter allowing the user to perform a different operation on their hair.
  • the first airflow may correspond to a drying air flow, with a wide and diffuse profile, and a high flow rate (for example, of the order of 70 m 3 /h), to allow the user to quickly dry their hair.
  • the second air flow may correspond to a shaping air flow, with a concentrated and narrow profile, and a lower flow rate (for example, of the order of 50 m 3 /h), to allow the user to precisely choose the location of their hair towards which the second air flow will be blown. In this way, the user can skillfully and easily shape their hair, such as waves, or on the contrary straightening.
  • the first air outlet 19 has an opening of generally circular shape ( figure 2 ), while the second air outlet 8 ( figures 1 And 3 ) has an opening of generally oblong, elongated shape.
  • the hairdressing appliance 1 can be used in a conventional manner for drying wet hair, the first flow of air blown by the blowing head 3 having, in the vicinity of the first air outlet 19, a substantially cylindrical or conical profile.
  • the hairdressing appliance 1 can then be used to dry the hair while facilitating the shaping of the hair (for example, to perform a “ blow dry ”), the second flow of air blown by the blowing head 3 forming, in the vicinity of the second air outlet 20, an air blade which allows the user to choose precisely the place on their hair where to apply the air flow to achieve shaping.
  • the hairdressing appliance 1 advantageously allows the user to choose between at least a first mode of use (for example drying) and a second mode of use (for example shaping the hair) of the hairdressing appliance 1 by modifying the arrangement or position of the blowing head 3 relative to the handle 4 (and preferably by a simple rotation of the blowing head 3 relative to the handle 4), which allows to select, in a particularly simple and rapid manner, an air flow profile adapted to the operation to be carried out on the hair.
  • a first mode of use for example drying
  • a second mode of use for example shaping the hair
  • the blowing head 3 comprises an external casing 21 (or fairing) which defines the external shape and contour of the blowing head 3 and, advantageously, the external shape and contour of an end part of the device hairdressing device 1, which is connected to the handle 4 of said hairdressing device 1.
  • the external envelope 21 can optionally be shaped to give the blowing head 3 a particular aesthetic appearance, for example a generally cylindrical appearance as illustrated by example in figures 1 to 5 .
  • said external envelope 21 is advantageously shaped to allow manual gripping by the user, so that the latter can print directly by hand on said external envelope 21 (and therefore on the head of blowing 3), a pivoting movement around the second axis B-B' of rotation of the blowing head 3 relative to the handle 4, to select one or the other of said first 19 and second 20 air outlets from the head blowing, and therefore the corresponding operating mode of the hairdressing appliance 1.
  • the blowing head 3 comprises a nozzle body 22 to guide the air flow out of the hairdressing appliance 1, towards the user's hair.
  • the nozzle body 22 is advantageously embedded in said external envelope 21, formed for example of half-shells assembled by snap-fastening or screwing. Rotation, by the user, of the outer casing 21 of the blowing head 3 around the second axis BB' thus causes the nozzle body 22 to rotate jointly around said second axis B-B'.
  • the external envelope 21 of the blowing head 3 extends generally longitudinally along a third axis CC' orthogonal to a median plane of the blowing head 3, said blowing head 3 being arranged relative to the handle 4 so that the second axis BB' of rotation of the blowing head 3 coincides with the first axis AA' of extension longitudinal of the handle 4, and that said first AA' and second BB' axes are inscribed in the median plane of the blowing head 3.
  • the external envelope 21 therefore extends advantageously along said third axis CC' which is orthogonal to the times to the first axis AA' of longitudinal extension of the handle 4 and to the second axis BB' of rotation of the blowing head 3, and over a substantially equal average length on either side of said first AA' and second BB' axes .
  • this particular arrangement advantageously contributes to a good general balance and to good handling of the hairdressing device 1 by the user.
  • the nozzle body 22, advantageously monolithic, itself extends preferentially along the third axis CC' of longitudinal extension of the blowing head 3 between, on the one hand, a first end of the nozzle forming the first outlet d air 19 of the blowing head 3 (which advantageously has an opening of generally circular shape, as mentioned above) and, on the other hand, a second opposite end of the nozzle forming, for its part, the second outlet of air 20 of the blowing head 3 (which advantageously has an opening of generally oblong, elongated shape, in a direction perpendicular to the second axis BB' of the blowing head 3).
  • the first 19 and second 20 air outlets of the blowing head 3 are thus arranged on either side of the second axis BB' of rotation of the blowing head 3 relative to the handle 4.
  • the passage of the blowing head 3 from said first position to said second position then advantageously corresponds to a rotation of said blowing head 3 by an angle of 180° around said second axis B-B'. This particular arrangement contributes to practical and particularly intuitive handling of the hairdressing appliance 1 by the user.
  • the hairdressing appliance 1 also comprises a deflector 23 for guiding the air flow generated by the blower module 2 from the guide channel 7 of the handle 4 alternately towards one or the other of said first 19 and second 20 air outlets, depending on the position occupied by the blowing head 3 mounted to pivot relative to the handle 4.
  • the deflector 23 preferably comprises a bent tubular element 24, fixedly mounted relative to the handle 4 and extending the air guide channel 7 called handle 4 along the first axis AA' of extension of the handle 4.
  • the blowing head 3 advantageously rotates around the bent tubular element 24 of the deflector 23, when it passes from one to the other of said first and second positions.
  • the nozzle body 22 advantageously comprises an air inlet orifice 25, of dimensions combined with those of the bent tubular element 24 of the deflector, and through which said bent tubular element 24 enters the nozzle body 22, along the second axis BB' of rotation of the blowing head 3.
  • the bent tubular element 24 and the nozzle body 22 are advantageously configured and arranged relative to each other so that, when the head blower 3 occupies said first position, the bent tubular element 24 directs the air flow in the nozzle body 22 towards the first nozzle end forming the first air outlet 19 of the blower head 3, all by preferentially preventing any air leakage towards the second opposite nozzle end.
  • the bent tubular element 24 and the nozzle body 22 are advantageously configured and arranged relative to each other so that, when the blowing head 3 occupies said second position (in this case, at the following a rotation of the blowing head 3 by an angle of 180° around the second axis B-B'), the bent tubular element 24 then directs the air flow in the nozzle body 22 in the direction of the second nozzle end forming the second air outlet 20 of the blowing head 3, while preferentially preventing any air leakage towards the first opposite nozzle end ( Figure 5 ).
  • the deflector 23 (and in particular the bent tubular element 24 of the latter) and the nozzle body 22 are advantageously shaped and arranged to subject the air flow coming from the air guide channel 7 of the handle 4 a 90° deflection in the direction of one or the other of the first 19 and second 20 air outlets.
  • blowing head of the hairdressing appliance can obviously be envisaged, in particular in the case where the blowing head only comprises a single air outlet and does not is also not mounted movable relative to the handle of the hairdressing appliance.
  • the hairdressing device 1 also comprises an electronic module 26.
  • the electronic module 26 is advantageously designed to interact (directly or indirectly) with all or part of the different functional organs that may include the hairdressing appliance 1.
  • This is typically a card, an electronic circuit, a printed circuit (“ PCB ”) or a set of electrical, electronic or electromechanical components, internal to the hairdressing appliance 1.
  • the electronic module 26 can be intended to ensure a particular electrical power supply mode (with, for example, a filtering, transformation or current rectification), to ensure control, command or even regulation of the operation of one and/or the other of the functional organs of the hairdressing appliance 1.
  • said electronic module 26 may include components such as an electric battery, a display, one or more microcontroller(s), etc.
  • the electronic module 26 can possibly be connected to a certain number of sensors and sensors distributed in the hairdressing appliance 1 and intended to measure, to monitor, physical quantities linked to the operation of the latter (temperatures, electrical voltages and intensities, speeds / air flow rates, rotation speed of the fan 10 of the blower module 2, etc.), in order to control in return, in an optimal manner, the operation of the different functional organs of the hairdressing appliance 1.
  • the electronic module 26 is more specifically designed to ensure the piloting or monitoring of the operation of the hairdressing appliance 1.
  • the electronic module 26 can be designed to control the operation of the heating element 16, and understand in this respect a circuit electrical power control and/or specific regulation (power, temperature, etc.) of said heating element 16.
  • the electronic module 26 is more particularly designed to control the operation of the blower module 2 of the hairdressing appliance 1. Even more preferably, the electronic module 26 is designed to only control the operation of said blower module 2.
  • the control of said brushless electric motor 9 can thus be advantageously ensured by the electronic module 26.
  • the electronic module 26 can be designed to ensure in particular the switching of the electric current in the stator windings (phase control) of the motor as a function of data coming from position sensors (for example, Hall effect), the self-regulation of the rotation speed, etc.
  • said electronic module 26 is arranged in the blowing head 3 of the hairdressing appliance 1, preferably outside the air flow circulating within the blowing head 3.
  • the blowing head 3 may comprise a dedicated compartment 27, capable of receiving said electronic module 26.
  • Such an arrangement contributes to limiting the general size of the hairdressing appliance 1, in particular in the case where the electronic module 26 is designed to control the operation of the blower module 2 and/or the heating element 16 and that the latter are arranged outside the blowing head 3.
  • blowing head 3 is mounted movable relative to the handle 4 and, in particular, in the case where the blowing head 3 is mounted movable to rotate relative to the handle 4 in accordance with the preferred embodiment illustrated in the figures, it can then prove difficult to ensure a simple and robust electrical connection between, on the one hand, the heating element 16 and/or the blower module 2 arranged outside the blower head 3 (or any other functional organ of the hairdressing device 1 which would be connected to the electronic module 26 and which would be arranged outside the head of blowing 3) and, on the other hand, the electronic module 26 which is housed in the blowing head 3.
  • blowing head 3 will then preferably be mounted movable relative to the electronic module 26 housed within it, so that a movement, a change of position, of the blowing head 3 relative to the handle 4 does not occur. does not affect the respective position of the electronic module 26.
  • a hairdressing device comprising a manual gripping handle, a blowing head connected to said handle and an electronic module, which electronic module is housed within said blowing head, which is itself mounted mobile relative to said electronic module, constitutes as such a distinct invention in its own right, independently of the other characteristics described here.
  • the electronic module 26 is thus advantageously housed and arranged within the blowing head 3 so as to remain immobile relative to the blower module 2 and/or to the heating element 16 during the rotation of the blowing head 3 around the second axis B-B'.
  • the nozzle body 22 can be provided with an additional orifice 28, which is opposite the air inlet orifice via which the bent tubular element 24 of the deflector 23 enters the nozzle body 22 At the level of said additional orifice 28, a portion of the bent tubular element 24 is flush with or projects out of the nozzle body 22 to which the electronic module 26 can be fixed, directly or via a specific support 29.
  • other suitable mounting configurations could be considered.
  • the electronic module 26 could be mounted on the back of the bent tubular element 24 of the deflector 23.
  • the electrical connection between the heating element 16 and/or the blower module 2 (or any other functional organ of the hairdressing appliance 1 which would be connected to the electronic module 26 and which would be arranged outside of the blowing head 3) and the electronic module 26 housed in the blowing head 3 can advantageously be produced very simply, using for example conventional electrical conductor wires (not shown), without risk of damaging the electrical wires by twisting or even without requiring the use of complex mobile electrical connection means (of the rotating connector connection type, for example).
  • the manufacturing cost of the hairdressing device 1 is thus limited and its reliability increased.
  • the electronic module 26 Being housed within the blowing head 3, and although preferably arranged outside the air flow circulating through the latter, the electronic module 26 is likely to see its temperature increase significantly when the air flow generated by the module blower 3 is heated by the heating element 16 before being blown out of the device 1 by the blowing head 3. In addition, and even if the heating element 16 is not activated or the device hairdressing does not include such a heating element, the electronic module 26 is likely, during its normal operation, to heat up by itself under the effect in particular of the electric current passing through it. In all cases, this results in a high risk of malfunction, or even total failure, of the electronic module 26, if the temperature of the latter is not controlled and exceeds a certain tolerance threshold.
  • the hairdressing appliance 1 comprises, very interestingly, a diversion channel 30 which is designed to capture part of the air flow generated by the blower module 2 in order to ensure the cooling of said electronic module 26.
  • the diversion channel 30 is thus designed and configured to ensure the collection and diversion of part of the forced air flow produced by the blower module 2 - before said air flow or, where appropriate, heated by the heating element 16 - in order to guide and blow the part of the air flow thus taken as close as possible to the electronic module 26 to ensure forced cooling of the latter.
  • said diversion channel 30 extends at least partly in said handle 4.
  • the diversion channel 30 is thus advantageously integrated into the handle 4.
  • the hairdressing appliance 1 may be designed so that the guide channel 7 and the diversion channel 30 extend parallel to each other within the handle 4, advantageously along the first axis A-A' of extension of the latter.
  • the diversion channel 30 of the hairdressing appliance 1 advantageously opens, on the one hand, at the level of the air outlet of the working chamber 11 of the hairdressing module. blower 2, to capture part of the air flow (fresh, that is to say not yet heated by the heating element 16) generated by the blower module 2 and, on the other hand, in the immediate vicinity of the electronic module 26 which is housed in the blowing head 3.
  • said diversion channel 30 can be formed, along all or part of the length of the handle 4, by a free space provided between an interior wall of the handle 4 and an exterior wall of the tubular thermal insulator 18. Such a design also advantageously allows the handle 4 to be cooled, which improves the comfort of use of the hairdressing appliance 1.
  • Said diversion channel 30 can advantageously extend, at the level of the blowing head 3, inside a double-walled wall 31 forming a back of the bent tubular element 24, then through the support 29, mentioned above, via which the electronic module 26 is advantageously fixed to the bent tubular element 24.
  • the hairdressing appliance 1 can comprise a circuit for re-injecting the part of the air flow captured into the (main) air flow blown by the blowing head 3, so that after having contributed to the cooling of the electronic module 26, the part of the air flow which has been captured by the diversion channel 30 can itself be blown towards the user's hair via the air outlet(s) 19, 20 of the blowing head 3. In this way, the cooling of the module electronic 26 does not significantly impact the flow rate of the air flow generated by the blower module 2 and blown by the blower head 3.
  • the nozzle body 22 of the blowing head 3 may be provided with an orifice (not illustrated) for reinjection of the part of the air flow captured directly inside the nozzle body 22, preferably in downstream of the bent tubular element 24 of the deflector 23.
  • the external envelope 21 of the blowing head 3 can be provided with vents (or equivalent) through which all or part of the part of the air flow captured can escape out of the blowing head 3, and therefore outside the hairdressing appliance 1.
  • vents or equivalent
  • the part of the air flow used to cool the electronic module 26 can be rejected towards the outside of the hairdressing appliance 1 without impacting (or at the very least without significantly impacting) the temperature of the (main) air flow blown by the blowing head 3 towards the user's hair.
  • the diversion channel 30 is advantageously sized as a function of the desired level of cooling, depending on the temperature that the electronic module 26 can effectively withstand.
  • said diversion channel 30 may be sized in order to allow a flow rate to pass through it. of air between 1 and 10 m 3 /h, to allow effective cooling of the electronic module 26.
  • Such a bypass channel 30 thus allows particularly simple, effective and very inexpensive cooling of the electronic module 26 without it being necessary to resort to bulky additional cooling means, whether passive (for example, of the radiator type finned) and/or active (for example, fan type).
  • the hairdressing device 1 thus has great operational reliability, while being simple, compact and inexpensive in design.

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EP19828790.6A 2018-12-28 2019-12-26 Appareil de coiffure a module electronique refroidi Active EP3902441B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1874307A FR3091152B1 (fr) 2018-12-28 2018-12-28 Appareil de coiffure a module electronique refroidi
PCT/EP2019/087052 WO2020136228A1 (fr) 2018-12-28 2019-12-26 Appareil de coiffure a module electronique refroidi

Publications (2)

Publication Number Publication Date
EP3902441A1 EP3902441A1 (fr) 2021-11-03
EP3902441B1 true EP3902441B1 (fr) 2024-03-13

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EP19828790.6A Active EP3902441B1 (fr) 2018-12-28 2019-12-26 Appareil de coiffure a module electronique refroidi

Country Status (4)

Country Link
EP (1) EP3902441B1 (zh)
CN (1) CN111374427A (zh)
FR (1) FR3091152B1 (zh)
WO (1) WO2020136228A1 (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832706U (ja) * 1981-08-27 1983-03-03 小原　良隆 頭髪用ドライヤ−
US20160220004A1 (en) * 2013-07-05 2016-08-04 Dyson Technology Limited Hand held appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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DE3729774A1 (de) * 1987-09-05 1989-03-16 Krups Stiftung Elektrisch betriebener handhaartrockner
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FR3091152A1 (fr) 2020-07-03
EP3902441A1 (fr) 2021-11-03
FR3091152B1 (fr) 2021-10-15
WO2020136228A1 (fr) 2020-07-02

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