EP3614876B2 - Seche-cheveux avec asservissement de la vitesse - Google Patents

Seche-cheveux avec asservissement de la vitesse Download PDF

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Publication number
EP3614876B2
EP3614876B2 EP18713286.5A EP18713286A EP3614876B2 EP 3614876 B2 EP3614876 B2 EP 3614876B2 EP 18713286 A EP18713286 A EP 18713286A EP 3614876 B2 EP3614876 B2 EP 3614876B2
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EP
European Patent Office
Prior art keywords
hair dryer
fan
dryer according
air outlet
accessory
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
EP18713286.5A
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German (de)
English (en)
French (fr)
Other versions
EP3614876B1 (fr
EP3614876A1 (fr
Inventor
Olivier Smal
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 SPRL
Original Assignee
Babyliss Faco SPRL
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Publication date
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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 a hair dryer allowing adaptation of the air flow by automatically compensating the pressure loss due to a reduction in the outlet section caused by an accessory mounted on the outlet of the hair dryer.
  • Hair dryers are often equipped with means of controlling and adjusting parameters of the air blown by the device, such as speed, flow rate or temperature. Air flow and/or temperature are generally selected by the user.
  • the document US 5,790,749 discloses a hair dryer comprising a mechanism measuring radiation emitted by the hair.
  • This hair dryer also includes a control mechanism that acts jointly on airflow and temperature to regulate the flow of hot air during drying based on measurements of radiation emitted by the hair.
  • the document WO 2012/076885 illustrates a hair dryer which includes a fan and regulating means automatically controlling operation of the fan so as to maintain, at least substantially, a constant airflow volume during use.
  • the document CN103349418 describes a hair dryer capable of automatically adjusting airflow.
  • the hair dryer includes modules for sensing humidity, storing and comparing data, controlling and changing the speed of air flow.
  • the document US 2006/0098962 discloses a hair dryer comprising a microprocessor controlled by software to receive a set of information measured by sensors, such as temperature, pressure, motor rotation speed, current consumption by the motor and resistance heating,...
  • the microprocessor is programmed to continually check the data, but also to adjust this data in relation to control variables.
  • the document DE102007047647 discloses a hair dryer that adapts the fan speed depending on the accessory placed on the air outlet of the housing.
  • hair dryer is a consumer product, its price must remain affordable and hair dryers equipped with sensors of all kinds (temperature, pressure, etc.) and complex data management systems do not correspond not meet this criterion and make these hair dryers very expensive.
  • hair dryers can be equipped with different accessories, such as nozzles, diffusers, brushes or combs for shaping the hairstyle. These accessories generally obstruct the air outlet and modify the effective section of the hair dryer outlet.
  • the present invention offers a simple solution for adapting the air flow depending on the accessory mounted on the device.
  • FIG. 2 An example of a hair dryer 1 according to the invention is illustrated in Figure 2 .
  • This includes a housing 2 fitted with a handle 3. Like all hair dryers, it can be fitted with a hairdressing accessory, mounted on the air outlet 5.
  • accessory we mean an element removably attached to the air outlet of the hair dryer, allowing the hairstyle to be shaped, such as nozzles, diffusers, brushes or combs. These accessories change the effective section of the outlet mouth, which increases the resistance to air flow and therefore also changes the air flow of the hair dryer.
  • accessory we have chosen to illustrate the hair dryer according to the invention provided with a nozzle, it is of course understood that those skilled in the art are capable of replacing this nozzle with any other type of hairdressing accessory. .
  • the hair dryer housing contains a fan 6 designed to suck air inside the housing and circulate it between the air inlet mouth 4 and the air outlet mouth 5. Before its exit , the sucked air is heated by heating elements 9, such as a heating resistance, thanks to its passage through them.
  • the fan 6 is actuated by a motor 7.
  • the motor 7 is a brushless type motor, managed by a microprocessor 8 making it possible to adapt the speed of the fan 6 when the current consumption of the motor 7 is modified.
  • the hair dryer of the invention comprises a microprocessor 8 controlling the brushless motor 7 making it possible to adapt the speed of the fan 6 when the current consumption (intensity) of the motor 7 is modified.
  • the microprocessor therefore allows adaptation of the air flow depending on the accessory mounted on the air outlet.
  • the microprocessor adapts the speed, in order to increase the rotation speed of the fan to compensate for the reduction in outgoing air flow.
  • the increase in fan speed is of course adapted between certain limits, and in particular between a high limit and a low limit, preferably over a range going from 2000 to 6000 revolutions per minute, particularly preferably over a range going from 3000 to 5000 revolutions per minute.
  • the motor speed is 21,000 revolutions per minute when no accessory is provided, and is increased to reach 24,000 revolutions per minute when the accessory is mounted on the hair dryer.
  • the first step is to measure the current intensity of the motor 7.
  • the current intensity is measured continuously by the microprocessor in order to detect a drop or increase in this intensity. From the moment an accessory is added to the hair dryer, the current consumed by the motor decreases. When this intensity drops below a certain critical threshold (called “Low threshold” - Figure 8 ), the microprocessor detects that an accessory is placed on the hair dryer. The motor therefore reacts accordingly and increases its speed in order to compensate for the loss of flow due to the use of the accessory and therefore to the reduction in effective section of the air outlet 5. Once the high speed is reached , the current intensity is measured again continuously.
  • the intensity - unlike previously - increases slightly.
  • the microprocessor considers that the accessory is removed from the hair dryer.
  • the motor therefore reacts accordingly and slows down to return to its initial speed without accessories.
  • the intensity is measured again in order to detect the addition of an accessory.
  • the drop in air flow is limited to a maximum of 45%, preferably to 40%, particularly preferably to 35%.
  • the hair dryer shown in Figure 3 is provided with a nozzle 11 having a minimum air outlet section of 290mm 2 , while the same hair dryer, without accessories, has an air outlet with a section of 1000mm 2 .
  • minimum section of air outlet, we mean the section calculated at the level of the narrowest passage of the nozzle, this section being a section parallel to the outlet mouth 5 of the fan. In this case, this means that the air outlet section is reduced by 71% when the accessory is mounted on the device.
  • a hair dryer of the prior art which does not include control of the air flow at the outlet mouth section, will have at least a reduction in flow of approximately 71%, without taking into account of the additional reduction due to the loss of load.
  • the minimum air outlet section of the nozzle 11 is 558 mm 2 , which means that the reduction in section is 44%.
  • a hair dryer of the prior art will have at least a reduction in flow rate of approximately 44%, without taking into account the additional reduction due to pressure loss.
  • the drop in air flow of a hair dryer according to the invention is compensated at least by 20%, preferably 30%, particularly preferably 50%. In the example illustrated by the graph in Figure 7 , the drop in air flow is compensated to 31%.
  • the hair dryer housing includes a removable silencer.
  • the silencer generally includes one or more noise attenuation elements (open cell foam, etc.).
  • the handle may include multiple activation switches.
  • the first switch operates the hair dryer motor while the second switches the ion generator.
  • a switch can also be provided for the heating element, which allows the use of the hair dryer without heat, in “cold” mode.
  • the hair dryer does not need a temperature selector, given that the temperature of the outgoing flow is substantially constant when the heating elements 9 are activated.
  • substantially we mean that the temperature does not vary more than plus or minus 10°C, preferably 5°C. Indeed, since the air flow is adapted thanks to the microprocessor, the heating elements do not need to have different heating powers. A single heating power is sufficient to ensure a substantially constant temperature, and the hair dryer therefore does not have manual temperature regulation.
  • Indicators for activation/deactivation of the hair dryer, heating elements and ion generator may be provided on the handle of the device.
EP18713286.5A 2017-04-27 2018-03-30 Seche-cheveux avec asservissement de la vitesse Active EP3614876B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17168488 2017-04-27
PCT/EP2018/058328 WO2018197158A1 (fr) 2017-04-27 2018-03-30 Seche-cheveux avec asservissement de la vitesse

Publications (3)

Publication Number Publication Date
EP3614876A1 EP3614876A1 (fr) 2020-03-04
EP3614876B1 EP3614876B1 (fr) 2021-02-24
EP3614876B2 true EP3614876B2 (fr) 2023-10-18

Family

ID=58638789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18713286.5A Active EP3614876B2 (fr) 2017-04-27 2018-03-30 Seche-cheveux avec asservissement de la vitesse

Country Status (4)

Country Link
EP (1) EP3614876B2 (zh)
CN (1) CN110520009B (zh)
ES (1) ES2863461T3 (zh)
WO (1) WO2018197158A1 (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834540A1 (en) † 2006-03-17 2007-09-19 Giovanni Gandolfo Electronically controlled system, with low energetic impact, for the contemporaneous drying and modelling of the hair, and related scheme for the construction, and ways of use
EP2648565B1 (en) † 2010-12-08 2019-02-20 Jemella Limited A hair dryer

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT7853341V0 (it) 1978-05-22 1978-05-22 Cantelli Paolo Dispositivo per la neutralizzazione di cariche elettrostatiche
JPS54161454A (en) 1978-06-10 1979-12-21 Hitachi Ltd Hair drier
CN2033616U (zh) * 1988-04-14 1989-03-08 周志通 全自动控制烘干机
DE3904860C5 (de) 1989-02-17 2004-10-07 Robert Krups Gmbh & Co Kg Elektrisch betriebener Handhaartrockner
DE69527671T9 (de) 1994-04-27 2004-09-09 Koninklijke Philips Electronics N.V. Haartrockner mit geregeltem Luftstrom
GB9410133D0 (en) * 1994-05-20 1994-07-06 Pifco Ltd A hairdryer
DE19835791B4 (de) * 1997-08-07 2005-07-07 Wella Ag Handgerät zum Trocknen von Haar mittels Warmluft
FR2817450B1 (fr) * 2000-12-06 2003-02-14 Seb Sa Seche-cheveux a dispositif de variation de la section de sortie du flux d'air
AR047033A1 (es) 2004-11-05 2006-01-04 Duna Entpr Sa Secador de pelo de tipo manual programable con funciones multiples
JP2006263249A (ja) * 2005-03-25 2006-10-05 Matsushita Electric Works Ltd ヘアドライヤー
FR2892278B1 (fr) * 2005-10-25 2007-11-30 Seb Sa Seche-cheveux comportant un dispositif permettant de modifier la geometrie du flux d'air
DE102007047647A1 (de) * 2007-10-05 2009-04-09 BSH Bosch und Siemens Hausgeräte GmbH Haarpflegegerät
GB2469138B (en) 2009-04-04 2014-04-30 Dyson Technology Ltd Constant-power electric system
KR101983111B1 (ko) * 2012-07-04 2019-05-29 다이슨 테크놀러지 리미티드 휴대용 가전 제품을 위한 부착물
CN103251196A (zh) * 2013-04-26 2013-08-21 房凤梅 一种自动吹风机
CN103349418A (zh) 2013-06-17 2013-10-16 张秀云 一种可以自动调节风力大小的吹风机
US20150201730A1 (en) 2014-01-23 2015-07-23 Conair Corporation Hair dryer apparatus with noise reducing end cap
GB2549740B (en) 2016-04-26 2019-04-17 Dyson Technology Ltd A method for controlling an electric motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834540A1 (en) † 2006-03-17 2007-09-19 Giovanni Gandolfo Electronically controlled system, with low energetic impact, for the contemporaneous drying and modelling of the hair, and related scheme for the construction, and ways of use
EP2648565B1 (en) † 2010-12-08 2019-02-20 Jemella Limited A hair dryer

Also Published As

Publication number Publication date
CN110520009B (zh) 2022-07-29
ES2863461T3 (es) 2021-10-11
EP3614876B1 (fr) 2021-02-24
CN110520009A (zh) 2019-11-29
WO2018197158A1 (fr) 2018-11-01
EP3614876A1 (fr) 2020-03-04

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