EP2452584B1 - Haartrockner mit Zentrifugalgebläse - Google Patents

Haartrockner mit Zentrifugalgebläse Download PDF

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Publication number
EP2452584B1
EP2452584B1 EP20110306479 EP11306479A EP2452584B1 EP 2452584 B1 EP2452584 B1 EP 2452584B1 EP 20110306479 EP20110306479 EP 20110306479 EP 11306479 A EP11306479 A EP 11306479A EP 2452584 B1 EP2452584 B1 EP 2452584B1
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EP
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Prior art keywords
rotor
hairdryer according
air
longitudinal axis
hairdryer
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English (en)
French (fr)
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EP2452584A1 (de
Inventor
Benoît LINGLIN
Franck Mandica
Marc Legrain
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SEB SA
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SEB SA
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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

Definitions

  • the present invention relates to the technical field of hair dryers and, more particularly, electric hand-held hairdryers used by professionals and / or individuals.
  • a hand-held hairdryer generally comprises an elongated tubular body which contains a motor-fan unit formed of a propeller integral with the drive shaft of an electric motor.
  • the electric motor is held in the tubular body by rigid arms which ensure the centering of the helix relative to the inner wall of the tubular body.
  • the tubular body is equipped with a handle comprising a connection cord to the electrical network and control members of the operation of the electric motor.
  • the motorcycle fan unit draws air through an inlet located at the rear of the tubular body to push back through an outlet located at the front of the latter.
  • the hair dryer also comprises, most often, downstream of the propeller means for electric heating of the blown air.
  • Such a hair dryer gives satisfaction with regard to its primary function of drying hair.
  • known hair dryers have the disadvantage of being particularly noisy which induces fatigue during their prolonged use by a professional or a nuisance for the user and those around him.
  • US2010064542 describes a hair dryer according to the preamble of claim 1.
  • US2009188126 discloses a hair dryer with an elongate tubular body, a motor-fan unit, the rotor T being in a working chamber upstream of the motor, the rotor forming a centrifugal fan for discharging the air perpendicularly.
  • the invention relates to a hair dryer according to claim 1.
  • centrifugal fan makes it possible to obtain, at equivalent dimensions, a high internal pressure with an air flow rate similar to that of a propeller or helicoidal fan with a lower rotation speed and therefore a noise generated by the engine and the rotor less important.
  • the peripheral entrance of the tubular body is arranged laterally to the body and not to the rear of the body.
  • the arrangement of the peripheral air inlet - and not back to the tube - associated with the centrifugal fan makes it possible to reduce the noise relative to the user's ears since this combination makes it possible to reduce by a few decibels the noise produced in the rear region of the hair dryer to locate it on more scattered areas around the hair dryer.
  • the air inlet is not - even partially - in the longitudinal axis ⁇ ; preferably the air inlet is exclusively peripheral, forming one or more openings at least partially on the device, or even a complete opening 360 °.
  • the rotor can be made in different ways and, for example, include only one hub from which radial branches supporting blades extend.
  • the rotor comprises a drive plate of axis ⁇ supporting blades which are connected to the plate by their edge and which extend from a central region of the plate up to at least an outer peripheral edge of the tray.
  • This embodiment has the advantage of allowing a good ducting of the air in the working chamber, the plate forming the floor of the latter. Thus, it is not necessary to provide a fixed partition between the motor and the working chamber.
  • the rotor comprises less than nine vanes and preferably seven vanes. Indeed, the inventors have had the merit of highlighting that beyond eight blades the fan generates more noise while having a lower flow than that obtained with fewer blades. It also appeared that a number of seven blades made it possible to obtain an optimal compromise between speed and noise for rotational speeds of between 7000 and 12 000 rpm.
  • the blades have a height, measured parallel to the axis ⁇ , between 0.3 and 0.5 times the diameter of the rotor.
  • the blades may, for example, have a height measured parallel to the axis ⁇ between 20 mm and 30 mm.
  • the height measured parallel to the axis ⁇ is between 22 and even 25 mm and 30 mm.
  • each blade has, between an internal leading edge and an external trailing edge, a rope which forms, with a radial plane tangent to the leading edge, a negative angle no, the positive direction corresponding to the direction of rotation of the rotor during normal operation of the hair dryer.
  • This variant embodiment makes it possible to form a so-called "reaction" centrifugal fan making it possible to obtain larger outlet pressures than if the blades had a radial straight configuration.
  • Increasing the pressure at the outlet of the working chamber makes it possible to obtain a flow rate of the fan that is less sensitive to pressure drops induced by the obstacles situated downstream of the working chamber, such as, for example, straightening and channeling fins.
  • air flow means for electric heating of the blown air or a nozzle for styling.
  • the rotor comprises, opposite the plateau, an annular ceiling which is integral with the blades and which defines at its center a circular mouth. suction.
  • annular ceiling avoids recirculation phenomena of the air at the edge of the blade located opposite the drive plate.
  • the rotor has a maximum external diameter De and the suction port an internal diameter Da which can verify the following relation: da Of ⁇ 0 , 6 , to ensure optimum flow and pressure.
  • the rotor has a maximum outer diameter of ⁇ 65mm.
  • the motor has a rotation speed less than or equal to 10,000 revolutions / min.
  • the hairdryer comprises between the air inlet and the working chamber a suction duct which has a greater axial length or equal to the internal diameter (Da) of the suction mouth.
  • the hair dryer comprises between the air inlet and the working chamber an annular suction duct with a central core. It is meant that the cross section to the axis ⁇ of the duct is annular.
  • the central core has a decreasing outer diameter towards the working chamber.
  • the drive plate comprises a central block which has a diameter substantially equal to the diameter of the adjacent portion of the core.
  • the central core is formed at least in part of a cellular material.
  • the suction duct comprises at least one air precanalisation circuit to facilitate penetration. air in the blades.
  • the precanalization circuit of the air to facilitate the penetration of air into the blades is formed by at least one anti-noise rib substantially perpendicular to the outer wall of the suction duct.
  • each rib defines a central passage whose diameter is greater than or equal to the diameter of the suction mouth.
  • At least one anti-noise rib has a helical shape.
  • the suction duct has an inner wall which converges towards the suction mouth of the rotor.
  • the outer surface of the motor is at least partially surrounded by a shell of foam material.
  • the motor casing comprises openings and / or ventilation ducts.
  • the hair dryer comprises at least one engine suspension cradle comprising an internal annular collar for holding the motor and an external annular collar. support on an element of the tubular body, the inner collar and the outer collar being coaxial and connected by at least two arms S which each have an elastic core in a circular arc parallel to the inner and outer collars.
  • the implementation of such a suspension cradle provides a mechanical decoupling between the motor and the tubular body while ensuring optimal centering of the motor relative to the surrounding elements constituting the tubular body of the hair dryer.
  • the hair dryer comprises a tubular casing, for receiving the motor, located downstream of the working chamber and held in the tubular body by radial fins ensuring a ducting of the air coming from the working room.
  • a casing then performs a dual function of maintaining the motor and rectifying the flow of air from the working chamber so as to transform the radial flow at the outlet of the fan or rotor into an axial flow at the outlet of the tubular body.
  • the hair dryer may comprise two rings of foam whose axis coincides with that of the motor and a tab bearing on the rotor to hold the motor in place.
  • the outer surface of the tubular body is at least partly formed of a thickness of a cellular material.
  • the hair dryer according to the invention has, at equivalent or higher performance, a lower noise than that of hair dryers according to the prior art.
  • the method comprises a step of calculating the average of the values dB1 and dB2 or the average of dB1, dB2, dB3 and dB4.
  • the evaluation method according to the invention comprises a step of measuring the sound pressure dB5 at a point on the longitudinal axis at the back of the hair dryer at a distance D of between 15 cm and 30 cm.
  • a hair dryer as illustrated in FIG. figure 1 and generally designated by the reference 1, comprises an elongate tubular body 2 substantially symmetrical in revolution along a longitudinal axis ⁇ , except for a handle 3 which extends from the body 2 in a direction substantially perpendicular to the ⁇ axis.
  • the tubular body 2 may be formed in several pieces and, for example, made in the form of two half-shells in plastic material assembled along an axial plane passing through the handle 3 and supplemented by inserts.
  • the tubular body 2 comprises, at the front, an open end 4 of the air outlet.
  • the outlet 4 has a substantially circular shape, it being understood that the air outlet 4 could also have an elliptical or oblong shape.
  • the tubular body 2 further comprises, near a rear end 5, opposite the outlet 4, a peripheral air inlet 6 which extends over a part of or around the entire periphery of the body 2.
  • the hair dryer 1 comprises a motorcycle fan unit 10 disposed in the tubular body 2 between the inlet 6 and the outlet 4.
  • the motorcycle fan assembly 10 comprises a rotor 11 which is located in a working chamber 12 connected, on the one hand, to the air inlet 6 by a suction duct 13 and, on the other hand, to the outlet of the air 4 via a duct 14.
  • the rotor 11 is integral with a drive shaft 15 of an electric motor 16 disposed inside the blowing duct 14.
  • the rotor 11 forms a centrifugal fan adapted to suck the air from the duct 13 into the working chamber 12 parallel to the longitudinal axis ⁇ and to discharge it radially to rejoin the blowing duct 14 after being deflected at 90 ° by the outer peripheral wall 17 of the working chamber 12.
  • the rotor 11 comprises, as shown by the Figures 2 and 3 , a drive plate 20 which is located on the motor side 16 and which defines the floor of the working chamber 12 to separate it from the motor 16 and the blowing duct 14.
  • the rotor 11 comprises seven blades 21 which extend perpendicularly to the drive plate 20 opposite the engine 16.
  • the seven blades 21 have, seen in an axial plane, an arcuate cross section as is apparent from the figure 4 .
  • Each blade 21 then has a rope C which extends between a leading edge 23 located in a central region of the plate 20 and a trailing edge 24 located near the outer periphery of the plate 20.
  • the rope C of each blade 21 forms with the radial plane R, passing through the corresponding leading edge 23, a non-zero negative angle A and, in the present case, of the order of -90 °.
  • the positive direction of measurement of the angles corresponds to the direction of rotation of the rotor 11 as illustrated by the arrow F1.
  • Such a configuration of the blades makes it possible to produce a so-called "reaction" centrifugal fan making it possible to obtain higher pressures at the outlet of the working chamber than if the blades had a radical straight shape.
  • Obtaining a high pressure at the outlet of the working chamber 12 makes it possible to obtain an airflow that is less sensitive to pressure losses in the blowing duct 14.
  • annular ceiling 25 is also used which is integral with the blades 21 and which defines at its center a circular suction mouth 26.
  • the internal diameter Da of the suction mouth 26 is chosen to be at least equal to 0.6 times the outer diameter De of the rotor 11.
  • the rotor may be chosen so as to have an outer diameter of less than 70 mm and, for example, of the order of 65 mm.
  • the blades 21 will be sized to have an axial height h, measured parallel to the axis ⁇ , between 0.30 and 0.5 times the outer diameter De of the rotor.
  • the blades 21 will be made to have a height h between 20 mm and 30 mm, preferably between 22 and 30 mm.
  • the rotational speed of such a rotor 11 will preferably be chosen to be less than or equal to 10,000 rpm.
  • axial length I is greater than or equal to the internal diameter Da of the suction port 26.
  • axial length I Illustrated in figure 1 by a curved arrow, the length corresponding in operation to the length of pavilion traversed by the fluid.
  • the suction duct 13 comprises a central core 30 which gives it an annular shape from the air inlet 6 to, substantially, the working chamber 12.
  • the surface of the core 30 delimiting the suction duct 13 has, according to the example illustrated, a symmetrical shape of revolution of axis ⁇ with a concave generatrix so that the outside diameter of the central core 30 decreases towards the working chamber 12.
  • the drive plate 20 comprises a central pin 31 which has a diameter substantially equal to the diameter of the adjacent portion of the core 30.
  • the noise-absorbing effect of the core 30 can be further reinforced by making the core at least partly of a cellular material such as polyurethane foam based on polyester.
  • the core 30 may then be formed by a rigid shell filled at least partially with said cellular material.
  • the core may also be in the form of a molded piece of this cellular material.
  • the outward propagation of the noise of the suction duct 13 is also limited by the presence of at least one precanalisation circuit to facilitate the penetration of air into the blades (depending on the direction of rotation of the rotor).
  • This precanalization circuit of the air (32, 33) is formed by at least one anti-noise rib 32 substantially perpendicular to the external wall 33 of the suction duct 13.
  • the noise-reducing rib 32 consists of a helical shaped insert as shown in figure 5 .
  • the rib 32 may be made to define a free central passage 34 whose outer diameter is greater than or equal to the diameter Da of the suction mouth 26
  • the central passage 34 could also have an external diameter less than or equal to that of the suction mouth 26, in which case the suction channel or duct 13 will be made to present at the mouth of the mouth.
  • suction 26 a diameter greater than or equal to the internal diameter Da of the latter.
  • the outer wall 33 of the suction duct 13 converges towards the suction mouth 26.
  • the hair dryer 1 comprises a tubular casing 40 inside which the motor 16 is confined.
  • the tubular casing 40 has a cylindrical shape of revolution of axis ⁇ .
  • the tubular casing 40 is centered inside the blowing duct 14 by a coaxial belt 41 bearing against the inner wall of the blowing duct 14.
  • the belt 41 and the tubular casing 40 are connected to each other by radial fins 42 which provide a passage space for air between the housing 40 and the belt 41 and which channel the air from the working chamber 12 to oppose its possible swirling motion.
  • the containment of the engine 16 in the tubular housing 40 is provided by means of two discs 45, visible figures 1 and 2 made of a cellular material such as a polyurethane foam based on polyester.
  • the outer surface of the motor 16 is further covered or surrounded by a thickness 46 of cellular material.
  • the motor casing, formed by the discs 45 and the thickness 46, preferably comprises openings and / or ventilation channels 47 so as to allow heat removal from the motor 16 and thus ensure a satisfactory service life. .
  • each suspension cradle 50 comprises, as is apparent from the figure 7 , an inner annular collar 51 fitted tightly around the motor 16.
  • Each cradle 50 further comprises an outer annular collar 52 bearing on the inner wall of the casing 40.
  • the casing 40 is a constituent element of the tubular body 2 even if it consists of an insert in the latter.
  • the inner annular collar 51 is connected to the outer collar 52 by at least two and, according to the example shown, three arms 53 which have a general S shape.
  • Each arm has an elastic core 54 which is parallel to the collars 51 and 52 and which damps the vibrations during operation of the engine 16.
  • the fixing of the motor on the stator support of the hair dryer can be made at both ends of the motor by two bearing rings 71, 72 of foam arranged on each side of the engine of which the axis coincides with that of the motor 16 and a tongue 70 slightly deformed and bearing on the rotor 11 to keep the motor 16 in place and provide anti-vibration .
  • the hair dryer 1 further comprises downstream of the motorcycle fan unit 10 means 55 for electric heating of the blown air.
  • the heating means 55 can be made in any suitable manner and for example in the form of an electric heating resistance held by radial fins made of insulating materials such as for example mica sheets.
  • At least some parts of the outer surface of the body may also be made of cellular material such as a polyurethane foam based on polyester.
  • the hair dryer 1, according to the invention, thus constituted operates with heating performance and equivalent air flow, emitting less noise than hair dryers according to the previous.
  • the invention provides a measurement method for objectively quantifying the acoustic pressure experienced by the environment.
  • the dummy head T is equipped with two microphones 60 one disposed in the right ear and the other in the left ear of the head T.
  • the microphones 60 are connected to a unit of measurement and treatment, not shown , to measure the sound pressure at each microphone and to perform various calculations on the measured values.
  • the hair dryer 1 in operation is placed in a first position P1 of a rear side, for example right, of the head T with the longitudinal axis ⁇ contained in the horizontal plane H passing through the microphones 60 and making with a sagittal plane S symmetry of the head T, an angle ⁇ between 30 ° and 50 ° and, for example, equal to 45 °.
  • the hair dryer 1 in operation is raised to a second position P2 so that its output is directed downwards towards the head T.
  • the longitudinal axis ⁇ is located in an inclined plane P making an angle ⁇ with the horizontal plane H that it intersects at the line passing through the microphones 60.
  • the angle ⁇ has a value between 30 ° and 50 ° and for example equal at 45 °.
  • the longitudinal axis ⁇ forms the same angle ⁇ as in the position P1 with the sagittal plane S.
  • a third measurement dB3 in a third position P3 symmetrical with the first position P1 with respect to the sagittal plane S.
  • a fourth measurement dB4 is made in a fourth position P4 symmetrical with the second position P2 with respect to the sagittal plane S. It can be noticed that in the positions P1 and P2, the longitudinal axis ⁇ is included in the same vertical plane V while in the positions P3 and P4 the longitudinal axis ⁇ is included in the same vertical plane V 'symmetrical of the vertical plane V with respect to the sagittal plane S.
  • the output 4 is placed at a distance D, measured along the axis ⁇ , of the external surface of the head T between 5 cm and 20 cm and for example equal to 10 cm.
  • Each value dB1 to dB5 corresponds to the sum of the sound pressure measurements of the two microphones 60 for each corresponding position.
  • the average MdB has a value of about 69 dB while for a hair dryer according to the prior art having the same flow rate and the same heating power the average MdB has a value of about 75 dB.
  • the evaluation of the noise generated by the hair dryer in operation can be completed by measuring the sound pressure dB5 at a point on the longitudinal axis ⁇ At the back of the hair dryer at a distance D between 15 cm and 30 cm and for example equal to 20 cm.
  • This measurement dB5 accounts for the noise experienced by a user of the hair dryer 1 who dries the hair of another person.
  • the constituent elements of the tubular body such as for example the outer casing of the body, the casing 40, the core 30 are independent elements.
  • these different elements could be an integral part of the two hulls that make up the envelope.
  • the blowing duct is tightened at the outlet 4.
  • the blowing duct 14 could have a constant section throughout its length.

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  • Cleaning And Drying Hair (AREA)

Claims (18)

  1. Haartrockner, der Folgendes umfasst:
    - einen länglichen, rohrförmigen Körper (2) mit einer Längenachse Δ, der sich an einem Ende in einen Auslass (4) öffnet und in der Nähe eines dem Auslass (4) gegenüberliegenden hinteren Endes (5) einen Lufteinlass (6) umfasst, der peripher zur Längsachse Δ angeordnet ist,
    - ein Gebläse (10), das in dem rohrförmigen Körper (2) zwischen dem Einlass (6) und dem Auslass (4) angeordnet ist und einen Elektromotor (16) umfasst, der auf einer parallelen Achse oder einer in die Längsachse Δ übergehenden Achse einen Rotor (11) in Drehung versetzt, der sich in einem Arbeitsraum (12) befindet und dafür ausgelegt ist, Luft durch den Einlass (6) anzusaugen und durch den Auslass (4) auszustoßen, wobei sich der Motor (16) in Richtung des Luftstroms hinter dem Rotor (11) befindet,
    dadurch gekennzeichnet, dass der Rotor (11) ein Zentrifugalgebläse bildet, das dafür ausgelegt ist, die Luft in den Arbeitsraum (12) parallel zur Längsachse Δ anzusaugen und die Luft senkrecht zur Längsachse auszustoßen.
  2. Haartrockner nach Anspruch 1, dadurch gekennzeichnet, dass der Rotor (11) eine Antriebsscheibe (20) der Längsachse Δ umfasst, die Flügel (21) trägt, die an ihrem Rand mit der Scheibe verbunden sind und sich von einem zentralen Bereich der Scheibe (20) bis zumindest einem äußeren Rand der Scheibe (20) erstrecken.
  3. Haartrockner nach Anspruch 2, dadurch gekennzeichnet, dass der Rotor (11) weniger als neun Flügel (21) und vorzugsweise sieben Flügel (21) umfasst.
  4. Haartrockner nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Flügel (21) eine Höhe (h) aufweisen, die parallel zu der Längsachse Δ gemessen wird und zwischen 0,3 und 0,5 mal dem Durchmesser (De) des Rotors (11) beträgt.
  5. Haartrockner nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Flügel (21) eine Höhe (h) aufweisen, die parallel zu der Längsachse Δ gemessen wird und zwischen 20 mm und 30 mm beträgt.
  6. Haartrockner nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass jeder Flügel (21) zwischen einer innen liegenden Vorderkante (23) und einer außen liegenden Hinterkante (24) eine Bogensehne (C) aufweist, die mit einer radialen Ebene (R), die tangential zur Vorderkante (23) verläuft, einen negativen Winkel (A) ungleich Null bildet, wobei die positive Richtung der Drehrichtung (F1) des Rotors (11) bei Normalbetrieb des Haartrockners entspricht.
  7. Haartrockner nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Rotor (11) eine der Scheibe (20) gegenüberliegende ringförmige Deckscheibe (25) umfasst, die fest mit den Flügeln verbunden ist und in ihrer Mitte eine kreisförmige Ansaugöffnung (26) definiert.
  8. Haartrockner nach Anspruch 6, dadurch gekennzeichnet, dass der Rotor (11) einen maximalen Außendurchmesser (De) und die Ansaugöffnung (26) einen Innendurchmesser (Da) aufweisen, die die folgende Beziehung erfüllen: Da De ≥ 0 , 6.
    Figure imgb0003
  9. Haartrockner nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass der Rotor (11) einen maximalen Außendurchmesser (De) von höchstens 65 mm aufweist.
  10. Haartrockner nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass er zwischen dem Lufteinlass (6) und dem Arbeitsraum (12) eine ringförmige Saugleitung (13) mit einem zentralen Kern (30) umfasst.
  11. Haartrockner nach Anspruch 10, dadurch gekennzeichnet, dass der zentrale Kern (30) einen Außendurchmesser aufweist, der zum Arbeitsraum hin abnimmt.
  12. Haartrockner nach Anspruch 2 und nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Antriebsscheibe (20) eine zentrale Steckstelle (31) umfasst, die einen Durchmesser aufweist, der im Wesentlichen dem Durchmesser des angrenzenden Abschnitts des Kerns (30) entspricht.
  13. Haartrockner nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass der zentrale Kern (30) zumindest teilweise aus einem Wabenmaterial besteht.
  14. Haartrockner nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Saugleitung (13) mindestens einen Kreislauf zur Kanalisierung der Luft (32, 33) umfasst, um den Eintritt der Luft in die Flügel zu erleichtern.
  15. Haartrockner nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Kreislauf zur Kanalisierung der Luft (32, 33) als mindestens eine geräuschdämmende Rippe (32) ausgebildet ist, die im Wesentlichen senkrecht zur Außenwand (33) der Saugleitung (13) verläuft.
  16. Haartrockner nach Anspruch 15, dadurch gekennzeichnet, dass jede Rippe (32) einen mittleren Durchlass (34) definiert, dessen Durchmesser mindestens dem Durchmesser (Da) der Ansaugöffnung (26) entspricht.
  17. Haartrockner nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass er mindestens ein Gestell (50) zur Lagerung des Motors (16) umfasst, mit einem Innenring (51) zur Fixierung des Motors sowie einem Außenring (52) zur Abstützung an einem Element des rohrförmigen Körpers (2), wobei der Innenring (51) und der Außenring (52) koaxial angeordnet und durch mindestens zwei "S"-förmige Arme (53) verbunden sind, die jeweils mit einem elastischen Steg (54) versehen sind, der in einem Kreisbogen parallel zum Innenring (51) und zum Außenring (52) verläuft.
  18. Haartrockner nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass er ein rohrförmiges Gehäuse (40) zur Aufnahme des Motors (16) umfasst, das nach dem Arbeitsraum (12) angeordnet ist und im rohrförmigen Körper durch Radialrippen (42) gehalten wird, wodurch eine Kanalisierung der Luft aus dem Arbeitsraum (12) ermöglicht wird.
EP20110306479 2010-11-15 2011-11-14 Haartrockner mit Zentrifugalgebläse Active EP2452584B1 (de)

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FR1059343A FR2967335B1 (fr) 2010-11-15 2010-11-15 Seche-cheveux a ventilateur centrifuge

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EP2452584A1 EP2452584A1 (de) 2012-05-16
EP2452584B1 true EP2452584B1 (de) 2014-06-04

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CN (1) CN202820036U (de)
ES (1) ES2491102T3 (de)
FR (1) FR2967335B1 (de)

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US9408452B1 (en) * 2015-11-19 2016-08-09 Khaled A. M. A. A. Al-Khulaifi Robotic hair dryer holder system with tracking

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US6766590B2 (en) * 2002-07-15 2004-07-27 Wahl Clipper Corporation Hand held drying device
FR2926704B1 (fr) * 2008-01-25 2013-02-01 Velecta Paramount Silencieux pour appareil de sechage et seche-cheveux silencieux
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180034522A (ko) * 2015-07-28 2018-04-04 세브 에스.아. 최적화된 음향 성능을 갖는 흡기관을 포함하는 헤어드라이어
KR102585671B1 (ko) 2015-07-28 2023-10-06 세브 에스.아. 최적화된 음향 성능을 갖는 흡기관을 포함하는 헤어드라이어

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ES2491102T3 (es) 2014-09-05
CN202820036U (zh) 2013-03-27
EP2452584A1 (de) 2012-05-16
FR2967335A1 (fr) 2012-05-18

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