EP3925482B1 - Haartrockner mit stossdämpfer unterstützung - Google Patents

Haartrockner mit stossdämpfer unterstützung Download PDF

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Publication number
EP3925482B1
EP3925482B1 EP21180150.1A EP21180150A EP3925482B1 EP 3925482 B1 EP3925482 B1 EP 3925482B1 EP 21180150 A EP21180150 A EP 21180150A EP 3925482 B1 EP3925482 B1 EP 3925482B1
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EP
European Patent Office
Prior art keywords
motor
shock absorber
hairdryer
support
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21180150.1A
Other languages
English (en)
French (fr)
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EP3925482A1 (de
Inventor
Jérémy DELHOM
Lionel Reyes
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
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SEB SA
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Publication of EP3925482A1 publication Critical patent/EP3925482A1/de
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    • 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
    • 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

Definitions

  • the invention lies in the general field of hairdressing appliances such as, for example, hair dryers.
  • Many domestic blower appliances incorporate a rotating part to produce a radial airflow inside the appliance.
  • the rotating part (propeller) is for example driven in rotation by an electric motor unit incorporated in the device.
  • a hair dryer usually comprises a handle held by the user, as well as a longitudinal portion generally perpendicular to the handle, for the circulation of air.
  • the flow of air emerging from the longitudinal portion is usually heated by heating means.
  • the air flow is generated by a rotating part of the propeller type which sets the air in motion from an air inlet zone to an air outlet zone. air.
  • a hair dryer of this type is for example described in the international application WO 2017/017330 A1 .
  • the noise pollution associated with this type of device is mainly due to the flow of air and the vibrations of the parts contained in the device.
  • hair dryers whose electric motor is housed in a damping support generally known by the term "silent block" whose function is to reduce the vibrations generated by the motor (the propeller fixed to the motor ) and transmitted to the rest of the device.
  • a device of this type is for example described in the document CN 108 937 062 A .
  • shock absorber support can be improved in terms of size and aerodynamics. Indeed, the shock absorber supports of the art earlier generally cause a significant increase in the diameter of the hair dryers and/or a disturbance in the flow of the air flow given their size.
  • the present invention relates to a hair dryer as defined in claim 1.
  • Preferred features of the invention are set out in the dependent claims.
  • the present invention provides a hair dryer comprising an air circulation chamber provided with an inlet zone and an outlet zone, an air circulation system and at least one heating element, and a motor configured to rotate a propeller, which extends downstream of said inlet zone when considering the direction of air movement between said inlet and outlet zones, said motor being mounted in an elastically deformable damping support.
  • This hair dryer is remarkable in that said shock-absorbing support has a frustoconical outer shape.
  • shock absorber support its size is drastically limited and it is given an aerodynamic, streamlined shape, facilitating the flow of air around it, which opposes at least the circulation of air within it. hair dryer.
  • hair dryer designates any household appliance, generally any hairdressing appliance, making it possible to produce against the hair a flow of air, preferably hot, so as to dry the latter.
  • this expression designates hair dryers strictly speaking, but also blower brushes, rotary blower brushes, or even devices driving the hair by Coanda effect, etc.
  • the hair dryer 1 comprises a body 10 which is extended downwards by a handle 11, which is only partially shown.
  • This handle typically includes buttons for manually controlling the hair dryer 1.
  • the body 10 has a converging shape from right to left when considering the figure 1 and has a shape of revolution with a longitudinal axis A.
  • the body 10 is formed of two coaxial boxes 2a and 2b. We can also qualify these housings as hulls.
  • the two boxes 2a and 2b have an analogous tapered general shape.
  • the casing 2a is external and contains all the components of the hair dryer 1. It houses the casing 2b which constitutes an internal casing or shell and which contains a substantial number of the components of the hair dryer.
  • the outer box 2a is visible to the user while the inner box 2b is concealed inside the outer box 2a and is therefore not visible to the user, under normal conditions of use.
  • Annular vibration isolation devices preferably forming seals 20 are arranged between the inner 2b and outer 2a casings and make it possible to isolate them from one another in terms of vibration.
  • An air inlet zone 4 is located at one end of the outer casing 2a and an air outlet zone 5 is located at its opposite end.
  • An air circulation chamber 3 extends between the air inlet zone 4 and the air outlet zone 5.
  • ambient air is sucked in at the level of the air inlet zone 4.
  • the ambient air enters the air circulation chamber 3 via an opening made in the air inlet zone 4 and in the internal casing 2b.
  • the air is set in motion along the air circulation chamber 3 as far as the air outlet zone 5.
  • a concentrator nozzle 50 preferably removable, such as represented at figures 2 and 3 .
  • a circulation system allows this air to move.
  • This circulation system comprises, from upstream to downstream, when the direction of air circulation between the air inlet 4 and air outlet 5 zones is considered, a propeller 7 arranged in the immediate vicinity of the air inlet zone 4, a motor 8, preferably electric, for driving the propeller 7 in rotation, a rectifier 6 for channeling and/or straightening the air at the outlet of the propeller 7.
  • propeller 7 is advantageously chosen from centrifugal or helico-centrifugal propellers. This type of propeller, well known to those skilled in the art, operates on the principle of axial suction at the center of the propeller, then radial ejection of the air, under the effect of centrifugal force.
  • This type of propeller therefore generates a radial air flow.
  • a helical component can also be imparted to the airflow.
  • the system also comprises at least one heating element 12 arranged downstream of the rectifier 6, which makes it possible to heat the air in the downstream part of the circulation chamber 3, before its expulsion through the outlet zone 5. All these elements are advantageously coaxial, which makes it possible to limit their radial size and to be perfectly integrated into the shaft of a hair dryer. Such a construction is also particularly simple, reliable and easy to implement.
  • the hair dryer also comprises means for controlling and adjusting the motor 8 and/or the heating element 12, which are not represented here, which make it possible to individually modify parameters such as the speed of rotation of the motor and /or the heating temperature, from an off position to a full power position, possibly passing through one or more intermediate positions.
  • the rectifier 6 as is particularly visible at the picture 3 , comprises a body 60 of converging shape from upstream to downstream, for example truncated-conical, and whose inlet outer diameter is greater than the outer diameter of the propeller 7. It is placed closest to this propeller in such a way to capture the vortex of air generated by the latter.
  • the function of the rectifier 6 is to channel the flow of air leaving the propeller 7 and to straighten it.
  • the stator 6 comprises at its periphery several stator blades 61 which here have a helical shape. In a different embodiment, the blades may for example have a spiral shape.
  • the rectifier 6 makes it possible to transform an airflow having a radial or helico-radial component emitted by the propeller 7 into an airflow having essentially or even only an axial component.
  • the body 60 of the rectifier 6 houses in its interior the aforementioned motor 8, which drives the propeller 7 in rotation on itself by a shaft 80.
  • This motor 8 is mounted in an elastically deformable damper support 9 which is shown in detail in figures 4 and 5 .
  • this shock-absorbing support is remarkable in that it has a tapered outer shape.
  • this particular shape of the elastically deformable damper support 9 makes it possible to drastically limit its size and to give it an aerodynamic shape which at least opposes the circulation of air within the hair dryer.
  • this elastically deformable damper support 9 contributes very significantly to filtering the vibrations generated by the motor 8 as well as the propeller 7 of the hair dryer when they are in operation.
  • shock absorber support shown in figures 4 and 5 .
  • This elastically deformable damper support 9 comprises a base 90 in the form of a thick disc, which has a circular and axial opening 900. This gives this base an annular shape whose opposite faces 901 and 902 are flat and parallel.
  • tabs 91 which serve, as will be seen later, to hold and enclose the motor 8. These tabs 91 are in one piece (that is to say monolithic) with the base 90.
  • the expression tabs here advantageously denotes a protrusion projecting from the face 901 so that the elastically deformable damper 9 has a discontinuous outer surface.
  • the elastically deformable damper 9 preferably does not have a continuous shape (such as a shape of full revolution like a cone or a cylinder) but on the contrary a discontinuous shape, that is to say comprising protuberances and/or protrusions, advantageously formed by said lugs 91.
  • the elastically deformable damper 9 is not a solid part. This results in particular in the use of less material, and therefore in a cost and a minimized weight for the elastically deformable damper 9.
  • the air circulates easily around the motor which is thus not enclosed in a closed space (since it is supported by legs) which contributes to its good cooling.
  • the expression enclose preferably designates a direct hold.
  • the tabs 91 preferably four in number, are advantageously in direct contact with the motor 8 and themselves ensure the maintenance of the motor 8, by gripping it directly. As explained, this makes it possible to increase the heat exchange surface between the motor 8 and its environment and therefore to improve the cooling of the latter.
  • the number of tabs 91 is different from four. However, it is preferable for it to be at least equal to three, in order to allow the motor 8 to be held in place well.
  • the tabs 91 are equidistant angularly.
  • the number of tabs is four and the tabs 91 are diametrically opposed in pairs, that is to say that they are each separated by 90°. In another example, where the number of legs 91 is 3, the legs 91 are each separated by 120°
  • the base of the legs is referenced 910, while their free end or top is referenced 912.
  • the base 910 is wide and extends radially, from the outer edge of the base 90 to the edge of the opening 900, forming however a slight recess behind this opening. They rise in the axial direction, parallel to the longitudinal axis A of the hair dryer, in particular visible at the figure 1 .
  • Each leg 91 has four faces referenced 913 to 916.
  • the internal face 913 is a flat face which extends in the extension or almost in the extension from the edge of the opening 900.
  • the outer face 914 which extends opposite the inner face has a convergent shape whose convergence is directed in the direction of the axis A as one s away from the base 90. Thus, the convergence is oriented in the direction of the air flow in order to give the elastically deformable damping support 9
  • the last two lateral faces 915 and 916 are planar faces of radial extent.
  • the free end 912 of the lugs 91 has the shape of a lug which projects slightly radially in the direction of the axis A.
  • each tab 91 is framed by two reinforcing elements or buttress 93 which rise from the base 90 and rest against the side faces 915 and 916. These reinforcing elements 93 rise on a part of the extent of the tabs 91. This contributes to secure the tabs 91 to the base 90, while allowing a certain movement of their respective free ends 912.
  • this damper support is made of rubber. It is preferably in one piece (in other words, it is monolithic) and cast under vacuum.
  • this elastically deformable damper support 9 has a Shore A hardness of between 40 and 90, preferably between 60 and 80 and even more preferably of the order of 70.
  • the motor 8 is engaged in the elastically deformable damper support 9, in the space delimited by the tabs 91.
  • This motor has a cylindrical shape and has an external diameter which corresponds substantially to that of the opening 900.
  • the shaft 80 of the motor 8, which is connected to the propeller 7, extends through the opening 900.
  • the motor 8 is encircled by an axially split cylindrical sleeve 82 whose function is to improve the performance of said motor 8 in particular vis-à-vis electromagnetic disturbances.
  • the motor 8 is retained in the damper support 9 by the lugs 91 and more precisely by their free end 912 in the form of a lug. Ample movement of the engine in a radial direction is prevented by the lugs 91, which effectively filter the vibrations likely to be generated.
  • the motor 8 is fixed on a support part 94 in the general shape of a disc, which is housed in the opening 900 of the base 90 of the elastically deformable damper support 9.
  • This support part 94 is rigid and is fixed to the elastically deformable damper support deformable 9 by any known assembly means (overmolding, tight assembly, etc.).
  • Motor 8 is fixed directly to support piece 94 by a pair of screws 940.
  • the motor 8 is only partially engaged in the shock absorber support 9 so that part of its longitudinal extent extends beyond the free end 912 of the legs 91. Preferably, it is engaged in the shock absorber support over approximately half to approximately two thirds of its length.
  • the propeller 7 shown in the figures is configured to be driven in rotation around the longitudinal axis A. It comprises a proximal wall defining an inlet opening provided for admitting into the propeller a flow of air directed along the longitudinal axis.
  • the air is ejected from the propeller 7 by a plurality of channels or cells, radially to the longitudinal axis A.
  • a propeller is then of the cellular type.
  • Such a propeller 7 is of the centrifugal or helico-centrifugal type. This type of propeller 7 is particularly appreciated for its excellent compromise between noise generated and performance, in particular good flow rate and good pressure resistance.
  • the volume emerging from each radial air passage channel is less than the volume set in motion between two blades of a standard hair dryer propeller.
  • the noise pollution caused by the collision of the small volume of air exiting from each channel against fixed elements of the hair dryer is limited.

Claims (9)

  1. Haartrockner (1), umfassend eine Kammer (3) zur Luftzirkulation, die mit einem Eintrittsbereich (4) und einem Austrittsbereich (5) ausgestattet ist, ein Luftzirkulationssystem (6, 7, 8) und mindestens ein Heizelement (12) sowie einen Motor (8), der ausgelegt ist, eine Helix (7), die sich in der Luftbewegungsrichtung zwischen dem Eintritts- (4) und dem Austrittsbereich (5) betrachtet stromabwärts des Eintrittsbereichs (4) erstreckt, in Drehung zu versetzen, wobei der Motor (8) in einem elastisch verformbaren stoßdämpfenden Träger (9) montiert ist, der eine kegelförmige Außenform aufweist,
    dadurch gekennzeichnet, dass
    der stoßdämpfende Träger (9) eine Anordnung voneinander beabstandeter Laschen (91) umfasst, die den Motor (8) umschließen.
  2. Haartrockner (1) nach dem vorstehenden Anspruch, gekennzeichnet durch die Tatsache, dass die Laschen (91) paarweise diametral gegenüberliegend um den Motor (8) herum angeordnet sind.
  3. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass die Anzahl der Laschen (91) vier beträgt.
  4. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass der Motor (8) teilweise in den stoßdämpfenden Träger (9) eingreift.
  5. Haartrockner (1) nach dem vorstehenden Anspruch, gekennzeichnet durch die Tatsache, dass der Motor (8) über ungefähr die Hälfte bis ungefähr zwei Drittel seiner Länge in den stoßdämpfenden Träger (9) eingreift.
  6. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass der stoßdämpfende Träger (9) aus Gummi besteht.
  7. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass der stoßdämpfende Träger (9) eine Shore-Härte A zwischen 40 und 90, vorzugsweise zwischen 60 und 80 aufweist.
  8. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass der stoßdämpfende Träger (9) eine Shore-Härte A in der Größenordnung von 70 aufweist.
  9. Haartrockner (1) nach einem der vorstehenden Ansprüche, gekennzeichnet durch die Tatsache, dass der Motor (8) auf einem steifen Trägerteil (94) befestigt ist, das fest mit dem stoßdämpfenden Träger (9) verbunden ist.
EP21180150.1A 2020-06-19 2021-06-17 Haartrockner mit stossdämpfer unterstützung Active EP3925482B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2006462A FR3111527B1 (fr) 2020-06-19 2020-06-19 Sèche-cheveux comportant un support amortisseur

Publications (2)

Publication Number Publication Date
EP3925482A1 EP3925482A1 (de) 2021-12-22
EP3925482B1 true EP3925482B1 (de) 2023-01-11

Family

ID=72644386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21180150.1A Active EP3925482B1 (de) 2020-06-19 2021-06-17 Haartrockner mit stossdämpfer unterstützung

Country Status (4)

Country Link
EP (1) EP3925482B1 (de)
CN (1) CN113812745A (de)
ES (1) ES2941789T3 (de)
FR (1) FR3111527B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967336B1 (fr) * 2010-11-15 2013-06-07 Seb Sa Seche-cheveux a conduit d'air particulier
FR3039377B1 (fr) 2015-07-28 2017-09-01 Seb Sa Seche-cheveux avec un conduit de sortie d'air a effet coanda
CN108783829A (zh) * 2018-08-03 2018-11-13 胡金平 一种锤子型电吹风
CN108937062B (zh) * 2018-09-29 2023-12-29 莱克电气股份有限公司 电吹风机

Also Published As

Publication number Publication date
ES2941789T3 (es) 2023-05-25
EP3925482A1 (de) 2021-12-22
CN113812745A (zh) 2021-12-21
FR3111527B1 (fr) 2022-07-29
FR3111527A1 (fr) 2021-12-24

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