EP2327327A1 - Zusätzlicher Geräuschdämpfer für Haartrockner - Google Patents

Zusätzlicher Geräuschdämpfer für Haartrockner Download PDF

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Publication number
EP2327327A1
EP2327327A1 EP09177178A EP09177178A EP2327327A1 EP 2327327 A1 EP2327327 A1 EP 2327327A1 EP 09177178 A EP09177178 A EP 09177178A EP 09177178 A EP09177178 A EP 09177178A EP 2327327 A1 EP2327327 A1 EP 2327327A1
Authority
EP
European Patent Office
Prior art keywords
silencer
add
fit
snap
universal
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.)
Ceased
Application number
EP09177178A
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English (en)
French (fr)
Inventor
Philippe Kalmes
Pierre Julemont
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.)
Babyliss Faco SA
Original Assignee
Babyliss Faco SA
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 Babyliss Faco SA filed Critical Babyliss Faco SA
Priority to EP09177178A priority Critical patent/EP2327327A1/de
Publication of EP2327327A1 publication Critical patent/EP2327327A1/de
Ceased 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
    • 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
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/42—Additional devices or measures, e.g. for noise damping, for musical entertainment

Definitions

  • the present invention relates to an add-on silencer to be optionally used onto various hairdryers.
  • the silencer reduces broadband noise by dissipative foam and tonal noise by a Helmholtz resonator array and/or acoustic liner.
  • the add-on silencer of the present invention is tuned to a broadband that is sufficient to cover different motor speeds that are due to variation in supplied voltage or due to the variety of hairdryers.
  • Noise of a hair dyer is typically broadband noise and tonal noise (see Fig.1 ). Broadband noise can be reduced by means of so-called dissipative silencers (foam, expansion chambers, ...) whereas tonal noise can be reduced by means of so-called reflective silencers, like quarter-wave resonators or Helmholtz-resonators.
  • tonal noise is the rotating fan in the dryer.
  • the fan gives a tonal noise at a certain frequency, i.e. the so-called “blade passing frequency” (BPF) and its harmonics.
  • BPF blade passing frequency
  • Fig.2 Helmholtz resonators
  • Fig.3 the noise attenuation will be maximum
  • f res c / 2 ⁇ ⁇ . S / l eff . V 1 / 2 in which:
  • Helmholtz resonators can thus be tuned to the BPF in order to reduce the tonal noise that is due to the rotation of the fan in a hairdryer.
  • the Helmholtz resonator only works well at a very narrow bandwidth ( Fig.3 ).
  • the BPF is directly proportional to the speed of the fan, which is directly coupled to the speed of the motor to which the fan is mounted.
  • the speed of the motor itself depends on the voltage supplied to the motor. This voltage can easily vary between 220 V and 240 V depending on location and other circumstances. So, the Helmholtz resonator tuned to the blade passing frequency (BPF) at a certain voltage will be much less effective if the speed of the motor is changed because of the supplied voltage.
  • one hairdryer may function at max settings at a specific speed, but a second hairdryer may function at a speed somewhat less or higher. The Helmholtz resonator can therefore only be really effective for a very narrow range of speeds.
  • hairdryers with integrated noise reduction are always heavier and bigger than hairdryers without integrated noise-reduction system. Those hairdryer are therefore more difficult to handle than hairdryers without integrated noise-reduction equipment.
  • a low-noise hand-held hairdryer has been disclosed in US 4,596,921 .
  • This hairdryer comprises an integrated sound insulation and does not offer the possibility of optional use.
  • WO 2009/112690 A2 discloses a quiet hairdryer generating particular sound frequencies and an integrated silencer of a particular configuration determined as a function of said particular sound frequencies.
  • EP 0 631 738 A1 discloses a housing attachment for a hairdryer which is fitted over the intake opening adjacent to the fan of said hairdryer.
  • the housing attachment forms a housing chamber with a second intake opening which precedes the first intake opening, wherein the flow cross-section of the second intake opening is smaller than the flow cross-section of the first intake opening.
  • the disclosed attachment does not disclose any specific broadband noise or tonal-noise reduction means.
  • the present invention aims to provide an add-on silencer suitable to be used on various existing hairdryers and able to overcome the drawbacks of the prior-art silencers.
  • the present invention additionally aims to provide a universal add-on silencer suitable to be used on existing hairdryers of various dimensions, the silencer comprising efficient broadband and tonal-noise reduction means.
  • the present invention discloses a universal add-on silencer with snap-fit means suitable to be used on existing hairdryers of various dimensions, said silencer comprising broadband and tonal-noise reduction means.
  • Fig.1 shows the typical noise spectrum of a hairdryer.
  • Fig.2 shows a schematic Helmholtz resonator.
  • Fig.3 shows the typical transmission loss for a Helmholtz resonator.
  • Fig.4 shows the principle of the add-on silencer of the present invention.
  • Figs.5a-5d show in a 3-D view a segmented annular snap-fit configuration of the add-on silencer of the present invention.
  • Fig.6 shows in a 3-D view of a segmented annular snap-fit configuration with "pull-to-open” snap-fits at 180° to allow the easy removal of said add-on silencer.
  • Fig.7 is a table showing measured motor speeds and calculated BPF for a number of commercial professional hairdryers.
  • Fig.8 shows the array of Helmholtz resonators.
  • Fig.9 shows the transmission loss for array of Helmholtz resonators.
  • Figs.10-11c show an acoustic liner wherein a broadened transmission loss of noise is achieved by creating three sizes of holes, one for each resonant frequency of the hairdryer.
  • Figs .11a-11b show a 3-D view of an acoustic liner arrangement with various hole sizes for each resonant frequencies.
  • Fig.12 represents an example of a specific add-on silencer according to the invention.
  • Fig.13 represents the noise spectrum of a hairdryer (type Babyliss Sovereign BAB6160E) without add-on silencer according to the invention.
  • Fig.14 represents the noise spectrum of a hairdryer of the type Babyliss Sovereign BAB6160E with add-on silencer according to the invention.
  • Figs.15-21 represent the noise spectrum of two hairdryer of the type Babyliss Sovereign BAB6160E ( Figs.19-21 ) and Portofino BAB6610E ( Figs.15-18 ). These figures show a reduction of the peak corresponding to the blade passing frequency (BPF) at a voltage of 220, 230 and 240 V.
  • BPF blade passing frequency
  • the present invention discloses a silencer as "add-on" to an existing hairdryer ( Fig.4 ).
  • the present invention offers the possibility of an optional use of a universal add-on silencer for existing hairdryers, which can be used under specific circumstances or left away under other circumstances.
  • the universal add-on silencer of the present invention comprises a segmented annular snap-fit geometry to fit around the back housing of various types of existing hairdryers ( Figs.5a-5d and Fig.6 ).
  • the snap-fit system grips to the filter mounted on the back of the existing hairdryer. Due to the segmented nature of the snap-fit configuration, it adapts to different sizes of hairdryers.
  • a foam ring is inserted between the annular snap fit and the back housing of the dryer to prevent any hair from entering the dryer at this position and to add to the broadband noise reduction.
  • the voltage supplied in different countries typically varies between 220 and 240 V.
  • the table of Fig.7 shows that varying the supplied voltage will vary the motor speed and also the BPF.
  • Fig.8 shows an array of Helmholtz resonators.
  • the configuration represented shows three rows, each row consisting of a number of chambers.
  • the middle ring is tuned to the frequency corresponding to a supplied voltage of 230 V.
  • the first ring can then be tuned to a frequency corresponding to a supplied voltage of 220 V, the last ring tuned to a frequency corresponding to a supplied voltage of 240 V.
  • the tuning of the different volumes can for example be done by means of a smaller or larger neck opening or neck length.
  • Fig.9 shows for example the effect of creating an array of three “rings" of chambers, each chamber tuned to a different frequency. If these frequencies are close enough to each other, this will create a broadened transmission-loss "peak".
  • a similar effect as an array of Helmholtz resonators can be achieved by means of a so-called "acoustic liner".
  • the broadened transmission loss here can be achieved by creating for example three sizes of holes, one for each resonant frequency.
  • the first frequency can be selected at for example 2400 Hz, the second frequency at 2550 Hz and the last frequency at 2700 Hz.
EP09177178A 2009-11-26 2009-11-26 Zusätzlicher Geräuschdämpfer für Haartrockner Ceased EP2327327A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09177178A EP2327327A1 (de) 2009-11-26 2009-11-26 Zusätzlicher Geräuschdämpfer für Haartrockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09177178A EP2327327A1 (de) 2009-11-26 2009-11-26 Zusätzlicher Geräuschdämpfer für Haartrockner

Publications (1)

Publication Number Publication Date
EP2327327A1 true EP2327327A1 (de) 2011-06-01

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EP09177178A Ceased EP2327327A1 (de) 2009-11-26 2009-11-26 Zusätzlicher Geräuschdämpfer für Haartrockner

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EP (1) EP2327327A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024620A1 (en) * 2010-07-29 2012-02-02 Parlux S.P.A. Silencer device for a hair dryer
EP2497385A1 (de) * 2011-03-09 2012-09-12 Parlux Abnehmbarer Schalldämpfer für Haartrockner, und mit einem solchen Schalldämpfer ausgestatteter Haartrockner
US9284963B2 (en) 2013-01-28 2016-03-15 American Dryer, Inc. Blower assembly for hand dryer, with helmholtz motor mount
JP2016135229A (ja) * 2015-01-23 2016-07-28 日本電産株式会社 ヘアードライヤー
US9421291B2 (en) 2011-05-12 2016-08-23 Fifth Third Bank Hand dryer with sanitizing ionization assembly
EP3071066A4 (de) * 2014-01-23 2016-11-02 Conair Haartrockner mit geräuschdämpfender endkappe
WO2017072112A1 (fr) 2015-10-27 2017-05-04 Babyliss Faco Sprl Seche-cheveux aux performances acoustiques ameliorees
US10184490B2 (en) 2015-02-13 2019-01-22 Johnson Electric S.A. Noise reduction diffuser for an electric blower
US10548439B2 (en) 2011-04-07 2020-02-04 Excel Dryer, Inc. Sanitizing hand dryer
GB2606394A (en) * 2021-05-07 2022-11-09 Dyson Technology Ltd An attachment for a haircare appliance
IL273488B1 (en) * 2020-03-22 2023-06-01 Golan Felix Noise reduction box for a standard hair dryer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596921A (en) 1984-05-22 1986-06-24 Hersh Alan S Low noise hand-held hairdryer
DE8805910U1 (de) * 1988-05-04 1988-06-16 Merges, Marco, 5000 Koeln, De
EP0631738A1 (de) 1993-06-17 1995-01-04 ERMILA FRISEURGERÄTE GmbH Luftdusche, insbesondere zum Trocknen von Haaren
WO2002057616A1 (de) * 2001-01-18 2002-07-25 Mahle Filtersysteme Gmbh Schalldämpfer mit einer mehrzahl an resonanzkammern
US20030116377A1 (en) * 2001-12-10 2003-06-26 Theo Huhn Employment of sound dampers in household appliances and electrical appliances with sound dampers
EP2002752A2 (de) * 2007-06-14 2008-12-17 Matsushita Electric Works, Ltd. Wärmegebläse
US20090188126A1 (en) * 2008-01-25 2009-07-30 Christophe Gaillard Silencer for Drying Appliance and Silent Hair Dryer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596921A (en) 1984-05-22 1986-06-24 Hersh Alan S Low noise hand-held hairdryer
DE8805910U1 (de) * 1988-05-04 1988-06-16 Merges, Marco, 5000 Koeln, De
EP0631738A1 (de) 1993-06-17 1995-01-04 ERMILA FRISEURGERÄTE GmbH Luftdusche, insbesondere zum Trocknen von Haaren
WO2002057616A1 (de) * 2001-01-18 2002-07-25 Mahle Filtersysteme Gmbh Schalldämpfer mit einer mehrzahl an resonanzkammern
US20030116377A1 (en) * 2001-12-10 2003-06-26 Theo Huhn Employment of sound dampers in household appliances and electrical appliances with sound dampers
EP2002752A2 (de) * 2007-06-14 2008-12-17 Matsushita Electric Works, Ltd. Wärmegebläse
US20090188126A1 (en) * 2008-01-25 2009-07-30 Christophe Gaillard Silencer for Drying Appliance and Silent Hair Dryer
WO2009112690A2 (fr) 2008-01-25 2009-09-17 Velecta Paramount S.A. Silencieux pour appareil de séchage et sèche-cheveux silencieux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GUNTER ERHARD ET AL: "Designing with Plastics3-446-22590-0 sowie im Buchhandel", 5 January 2006 (2006-01-05), pages 311 - 324, XP055490782, ISBN: 978-3-446-22590-9, Retrieved from the Internet <URL:http://files.hanser.de/hanser/docs/20060105_261515524-85_3-446-22590-0_Leseprobe_2.pdf> [retrieved on 20180706] *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8307948B2 (en) * 2010-07-29 2012-11-13 Parlux S.P.A. Silencer device for a hair dryer
US20120024620A1 (en) * 2010-07-29 2012-02-02 Parlux S.P.A. Silencer device for a hair dryer
EP2497385A1 (de) * 2011-03-09 2012-09-12 Parlux Abnehmbarer Schalldämpfer für Haartrockner, und mit einem solchen Schalldämpfer ausgestatteter Haartrockner
US10548439B2 (en) 2011-04-07 2020-02-04 Excel Dryer, Inc. Sanitizing hand dryer
US9421291B2 (en) 2011-05-12 2016-08-23 Fifth Third Bank Hand dryer with sanitizing ionization assembly
US9284963B2 (en) 2013-01-28 2016-03-15 American Dryer, Inc. Blower assembly for hand dryer, with helmholtz motor mount
EP3071066A4 (de) * 2014-01-23 2016-11-02 Conair Haartrockner mit geräuschdämpfender endkappe
JP2016135229A (ja) * 2015-01-23 2016-07-28 日本電産株式会社 ヘアードライヤー
US10184490B2 (en) 2015-02-13 2019-01-22 Johnson Electric S.A. Noise reduction diffuser for an electric blower
WO2017072112A1 (fr) 2015-10-27 2017-05-04 Babyliss Faco Sprl Seche-cheveux aux performances acoustiques ameliorees
IL273488B1 (en) * 2020-03-22 2023-06-01 Golan Felix Noise reduction box for a standard hair dryer
GB2606394A (en) * 2021-05-07 2022-11-09 Dyson Technology Ltd An attachment for a haircare appliance
GB2606394B (en) * 2021-05-07 2023-10-18 Dyson Technology Ltd An attachment for a haircare appliance

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