EP2989924A1 - Sèche-cheveux - Google Patents

Sèche-cheveux Download PDF

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Publication number
EP2989924A1
EP2989924A1 EP15181695.6A EP15181695A EP2989924A1 EP 2989924 A1 EP2989924 A1 EP 2989924A1 EP 15181695 A EP15181695 A EP 15181695A EP 2989924 A1 EP2989924 A1 EP 2989924A1
Authority
EP
European Patent Office
Prior art keywords
hair dryer
fan wheel
fan
dryer according
ring
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.)
Withdrawn
Application number
EP15181695.6A
Other languages
German (de)
English (en)
Inventor
Thomas Copitzky
Florian Michl
Robert Hacker
Berthold Altmann
Daniela Blischke
Anne Gruner
Otto Petraska
Rastislav Andrejco
Jan Ondrejcak
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2989924A1 publication Critical patent/EP2989924A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a hair dryer.
  • a hair dryer is commonly referred to as an electrical device for drying wet hair, such as after shampooing, swimming or bathing.
  • Commercially available hairdryers typically have a fan with an electrically driven fan. The fan is used to draw air into a housing of the hair dryer, where it can be heated by means of a suitable heater. About a provided on the housing air outlet, the heated air is then expelled again from the housing interior.
  • the term "hair dryer” in the following all hair styling devices are taken in which using a fan wheel moving air is generated.
  • the present invention therefore addresses the problem of providing a hair dryer that is characterized by increased ease of use.
  • the present invention is based on the general idea, by a predefined unbalance of a fan or a separately arranged rotational body to influence a noise emission of the hair dryer positively, that is, for example, to reduce or move to a perceived as pleasant frequency range.
  • the hair dryer according to the invention has a fan wheel arranged in a housing, which is driven by a drive device, in particular by an electric motor.
  • the fan wheel and / or the rotary body in this case have the predefined unbalance described above, the sound radiation, in particular in a frequency range between 80 and 300 Hz, in particular at less than 300 Hz, ie in the range of the usual speed of the fan and other air flow settings, so influences that this is perceived as more pleasant or can be reduced.
  • an absorption frequency can be created by the predefined unbalance, which at least partially absorbs the frequency usually occurring when the fan wheel rotates, thereby reducing the overall noise emission.
  • the aim is to optimize the overall noise of the hair dryer, of course, all frequency ranges of the hair dryer play a role.
  • the frequency range described must be reinforced by the unbalance of the fan wheel, so that a total of "pleasant" noise.
  • the frequency range is "influenced” or "manipulated” by the unbalance of the fan wheel and / or the rotating body, which does not necessarily correspond to a "reduction".
  • the predefined imbalance in particular allows noise components in the rather low-frequency range, i. in the range of approx. 80 to 1000 Hz, which have an important influence on the noise emission.
  • this frequency in particular the subjective hearing sense can be positively influenced, whereby the application of the hair dryer according to the invention is perceived as much more pleasant.
  • the fan has at least two, preferably even at least four fan blades, wherein at least one of these fan blades an additional mass for generating the desired imbalance is arranged.
  • the reduction / positive influence of the Sound emission required unbalance can thus be generated simply by a predefined additional mass is attached to at least one of the fan blades.
  • the fan is usually designed as a plastic injection molded part, it is conceivable that the additional mass is simply glued or welded to the fan.
  • a one-piece design of the additional mass with the fan is also conceivable, so that they can already be produced in the common production in a plastic injection molding tool. As a result, in particular the subsequent assembly of the additional mass can be saved.
  • the fan itself be rotationally symmetrical and have a predefined eccentrically arranged hub, via which it is rotatably connected to a shaft of the drive direction and wherein the eccentricity between the axis of symmetry of the fan and the actual Hub of the fan generates the desired imbalance.
  • eccentricity is extremely low due to the relatively high speed of usually about 15,000 rpm.
  • such a fan can be easily and inexpensively manufactured with a suitably designed plastic injection molding tool.
  • the fan wheel in particular on an outer side, has a ring.
  • This ring can now be used to generate the desired predefined unbalance and in particular has an asymmetric weight distribution or is arranged asymmetrically with respect to the fan wheel.
  • the ring is usually flat and mounted on the air inlet or the air intake side facing side.
  • the ring itself may also be designed as a flow guide and channel the air accelerated radially outward by the fan.
  • Such a ring can also be relatively easily attached to a conventional fan, for example by gluing or welding.
  • a one-piece design of the ring with the fan is conceivable, in which case a correspondingly modified plastic injection molding tool must be used.
  • the rotational body of the drive device or by a separate motor, in particular as Vibration motor is formed is driven. Should the rotary body thus not be part of the fan wheel, then it can be arranged separately on the shaft of the drive device and generate there the desired and predefined imbalance.
  • the drive device and the fan wheel rotatably connected therewith are completely separate from a vibration motor, the vibration motor having the rotation body for generating the desired imbalance.
  • Such an embodiment offers, in particular, the advantage of controlling the rotational speed of the rotational body independently of the rotational speed of the fan wheel. It is thus conceivable that the rotary body and the fan wheel rotate at the same speeds or at different speeds. In the case of a separately arranged rotating body, it is also conceivable that it rotates in the opposite direction to the fan wheel.
  • the drive device and / or the motor for driving the rotating body are mounted or suspended resiliently in the housing.
  • the drive device is usually firmly connected to the housing, for example screwed.
  • the drive device or the separate motor is no longer fixed relative to the housing but resiliently mounted, which can be done, for example, via soft plastic elements (for example of rubber) or silicone elements. Also conceivable are of course spring elements of any kind.
  • the degree of freedom of movement of the system drive device and fan wheel favors the effects of imbalance to some degree.
  • the resilient suspension of the drive means also serves to reduce the direct transmission of vibrations of the drive means or the vibration motor to the housing, whereby the housing itself is no longer fully available as an acoustic radiating surface and thus the noise emission can be reduced.
  • a hair dryer 1 has a fan wheel 3 arranged in a housing 2, which is driven by a drive device 4, for example by an electric motor.
  • the fan wheel 3 has a predefined imbalance, which in particular positively influences a sound emission at less than 300 Hz, in particular also reduces it.
  • the frequency usually occurring at a rotational speed of the fan wheel 3 of 15,000 revolutions per minute is to be positively influenced, and thus the hearing sensation when using the hair dryer 1 according to the invention is made more pleasant.
  • it is also possible to provide a rotary body 5 which, according to FIG Fig. 1 is shown only with broken line drawn.
  • the desired for influencing the unwanted noise emission, predefined unbalance can be generated for example by an additional mass 7, which is arranged on a fan blade 8 of the fan 3.
  • the fan 3 has at least two fan blades 8, but preferably at least four.
  • the additional mass 7 can be glued to the at least one fan blade 8, screwed or welded.
  • a one-piece design of the additional mass 7 with the fan 3 is conceivable, in which case only one used for the production of the impeller 3 injection molding tool, in particular a plastic injection molding tool, must be adjusted accordingly.
  • the unbalance required for influencing the noise emission can also be generated by virtue of the fact that the fan wheel 3 is rotationally symmetrical in itself but has a predefined, eccentrically arranged hub 9 (compare FIGS Fig. 2 ), via which it is rotatably connected to a shaft of the drive device 4.
  • the eccentricity E of the hub 9 is according to the Fig. 2 exaggerated.
  • An additional or alternative embodiment for generating the predefined unbalance may also be provided by a ring 10 (cf. Fig. 3 ), which is arranged in particular on an outer side of the fan wheel 3.
  • the ring 10 itself can either be arranged asymmetrically to the axis of rotation 6 of the impeller 3 or have an asymmetric weight distribution. It is also conceivable that the ring 10 is arranged on an air intake side and designed as a flow, so that this not only the task falls to produce an imbalance, but also helps the air flow guide, as accelerated by the fan 3 radially outward Air is channeled.
  • the drive means 4 is resiliently mounted in the housing 2, wherein the suspension is effected via spring elements 11.
  • a separate motor not shown, which drives the rotary body 5 and thus formed as a vibration motor, are resiliently suspended in the housing 2.
  • the operating noise of the hair dryer 1 lowered or at least moved to a more pleasant frequency range and thus its application are made more pleasant overall.

Landscapes

  • Cleaning And Drying Hair (AREA)
EP15181695.6A 2014-08-27 2015-08-20 Sèche-cheveux Withdrawn EP2989924A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014217088.5A DE102014217088A1 (de) 2014-08-27 2014-08-27 Haartrockner

Publications (1)

Publication Number Publication Date
EP2989924A1 true EP2989924A1 (fr) 2016-03-02

Family

ID=53886990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15181695.6A Withdrawn EP2989924A1 (fr) 2014-08-27 2015-08-20 Sèche-cheveux

Country Status (2)

Country Link
EP (1) EP2989924A1 (fr)
DE (1) DE102014217088A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114402511A (zh) * 2021-06-18 2022-04-26 深圳汝原科技有限公司 电机安装架、电机组件及干燥装置
DE202022001862U1 (de) 2022-08-20 2022-09-26 Wik Far East Ltd. Sensorischer Haartrockner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR928397A (fr) * 1946-05-23 1947-11-26 Perfectionnements aux séchoirs pour ondulations à l'usage des coiffeurs
US4132360A (en) * 1977-08-22 1979-01-02 General Electric Company Pulsating hair dryer
DE19633035A1 (de) * 1996-08-16 1998-02-19 Braun Ag Werkzeug zur Haarbehandlung
GB2317927A (en) * 1996-10-04 1998-04-08 Braun Ag Impeller for a hair dryer or accessory

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841943A (en) * 1997-04-25 1998-11-24 Soundesign, Llc Ducted flow hair dryer with multiple impellers
WO2012168416A1 (fr) * 2011-06-10 2012-12-13 Carnehammar, Prof. Dr. Lars Bertil Procédé, appareil et système de réduction des vibrations dans le système rotatif d'un ventilateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR928397A (fr) * 1946-05-23 1947-11-26 Perfectionnements aux séchoirs pour ondulations à l'usage des coiffeurs
US4132360A (en) * 1977-08-22 1979-01-02 General Electric Company Pulsating hair dryer
DE19633035A1 (de) * 1996-08-16 1998-02-19 Braun Ag Werkzeug zur Haarbehandlung
GB2317927A (en) * 1996-10-04 1998-04-08 Braun Ag Impeller for a hair dryer or accessory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114402511A (zh) * 2021-06-18 2022-04-26 深圳汝原科技有限公司 电机安装架、电机组件及干燥装置
DE202022001862U1 (de) 2022-08-20 2022-09-26 Wik Far East Ltd. Sensorischer Haartrockner

Also Published As

Publication number Publication date
DE102014217088A1 (de) 2016-03-03

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