EP3935993A1 - Haartrockner - Google Patents

Haartrockner Download PDF

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Publication number
EP3935993A1
EP3935993A1 EP20184370.3A EP20184370A EP3935993A1 EP 3935993 A1 EP3935993 A1 EP 3935993A1 EP 20184370 A EP20184370 A EP 20184370A EP 3935993 A1 EP3935993 A1 EP 3935993A1
Authority
EP
European Patent Office
Prior art keywords
hair
hair dryer
drying chamber
dimension
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.)
Withdrawn
Application number
EP20184370.3A
Other languages
English (en)
French (fr)
Inventor
Mark Johannes Lelieveld
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP20184370.3A priority Critical patent/EP3935993A1/de
Priority to PCT/EP2021/068451 priority patent/WO2022008408A1/en
Priority to PL21739142.4T priority patent/PL4178394T3/pl
Priority to CN202180048645.0A priority patent/CN115867168A/zh
Priority to US18/014,196 priority patent/US20230255335A1/en
Priority to EP21739142.4A priority patent/EP4178394B1/de
Publication of EP3935993A1 publication Critical patent/EP3935993A1/de
Withdrawn legal-status Critical Current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
    • 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 invention relates to a hair dryer.
  • US2016150864A1 discloses a hair grooming system includes a vacuum canister, a hose, and a hand-held unit.
  • the hose is secured to and in fluid communication with the vacuum canister and the hand-held unit.
  • the hand-held unit includes a vacuum chamber.
  • a mechanism for creating a vacuum is positioned in the vacuum canister, and the vacuum is communicated to the vacuum chamber by the hose.
  • the system can further include a heating element and a fan arranged to heat air and move the air into the vacuum chamber.
  • a method for grooming hair includes the steps of placing a section of hair into a vacuum chamber; drawing a vacuum to remove excess water from the hair; and applying heated air to the section of hair.
  • the advantage is obtained that hair is spread over the width of the drying chamber so that it is more equally dried.
  • a circular drying chamber hair in the middle of a hair strand will remain humid while hair at the outside of a hair strand will be dry, and if the settings are adjusted such that hair in the middle is also sufficiently dried, hair at the outside of the hair strand will be exposed to too much heat, which will damage the hair.
  • the first dimension is at least 5 times larger than a second dimension. More preferably, the first dimension is at least 10 times larger than a second dimension.
  • a compact hair dryer design is obtained if the hair dryer has a housing comprising the fan and the drying chamber, and the drying chamber is folded.
  • a first area of the cross-section of the drying chamber at a turn is smaller than a second area of the cross-section in the middle between turns, the air speed is locally increased which facilitates hair entering the device.
  • a smaller cross-section it is additionally possible to increase the radius of the turns, which again makes it easier for the hair to make the U-turn without deformations or undesired curls.
  • a more satisfactory hair drying experience is obtained if the hair dryer is arranged for heating hair from multiple sides.
  • the drying speed is also increased if a wall of the drying chamber is provided with a hydrophilic or water absorbing or water surface tension reducing material.
  • the water absorbing material can be regenerated by means of hot air, the material can be used multiple times.
  • the drying chamber can be cleaned.
  • the hair dryer has a sensor for sensing temperature and/or humidity of the air flow at an air outlet of the hair dryer, and a part of the air flow is recirculated based on an output of the sensor, the airflow can be controlled to get best results in terms of speed and hair feel, and it may become possible to do with less heater power.
  • an inlet I1 for hair and cold air is wide, like a letter box sleeve.
  • the wide inlet I1 of a drying chamber spreads hair evenly, thereby preventing hair in the middle of a tress from being not dried well.
  • a rounded curve at the hair inlet I1 bends the hair into the device, based on the coanda effect.
  • the size of the inlet I1 could range from 5 x 50 mm to 20 x 250 mm. In a practical example, the inlet I1 is 10 x 120 mm.
  • the drying chamber is formed by a folded hair channel HC in which the hair will go in (downwards), then around the first round edge E1 U-turn up, and then around the second round edge E2 U-turn down.
  • a 60 cm long hair path as is needed for customers with long hair, can be fit into a compact device that is only about 20 cm high.
  • a cross-sectional area can be less than in the idle between the edges so as to locally increase the air speed to help pull the hair through the U-turn, and to ensure that the U-turns are rounder, which also helps to allow hair to pass the U-turns in the hair channel HC.
  • the inner wall of the drying chamber can be equipped with dimples as the airflow is defined and dimples may reduce drag. Dimples also help to improve the heat exchange.
  • the hair channel HC may contain ribs to spread the hairs or even style the hair, and may contain swirl ribs which can be set to create a curl effect.
  • a filter FT prevents hairs from going into a fan F.
  • the filter FT is preferably removable so as to allow for cleaning.
  • the suction fan F can be set on flow, strong and weak.
  • the fan F should be able to handle a minimal amount of water/moisture.
  • the fan F may produce an air flow of between 5 and 40 1/s, preferably between about 18 to 20 1/s; fans as used in some vacuum cleaners may be suitable for this purpose.
  • a single motor/fan unit is used to create suction that will not only pull hair into the hair channel HC but also pull air through or along a heater HT into the hair channel HC.
  • heated air is only provided from one side (i.e. from the right side in the drawings) to the hair that has entered the hair dryer. In another embodiment, heated air is provided from both left and right sides to the hair.
  • the heater HT is shown to the right of the folded hair channel HC. In other embodiments, the heater HT is placed elsewhere, e.g. at the bottom, or before or after the folded hair channel as shown in Fig. 1 from the viewpoint of a person looking at Fig. 1 .
  • a suction fan F at the end of the hair channel HC that sucks hair into the hair channel it is possible to have a fan in the separate channel in which a heater HT is placed so as to create an air flow in the hair channel HC that guides hair into the hair channel.
  • the hair channel HC may have multiple hot air inlets along its trajectory so as to ensure that the heat is more evenly distributed over the hair length so as to ensure a more even drying rate.
  • the outlet air for humid air. If the hair dryer is provided with a heater HT, the outlet air is warm and could be used to dry the scalp. To that end, the outlet air should be directed towards the scalp.
  • the filter FT Just before the filter FT, or between the filter FT and the fan F, there can be a sensor MS to measure the moisture and/or temperature, linked to the dryness of the hair.
  • some outlet air from the fan F may be rechanneled by a valve V2 towards the heater HT to ensure an air flow along the heater HT. This recirculation may save energy (as the heat in the outlet air is not wasted but reused), which is particularly important for a battery-operated hair dryer. Yet, the air flow should allow for a sufficient cooling of the heater HT.
  • the recirculated air may have too much moisture to ensure that hair is dried in a satisfactory way, so that if the sensor MS indicates that the air contains too much moisture, the air is not recirculated or only to a limited extent by suitably controlling the valve V2.
  • the hair dryer may indicate that the hair has been sufficiently dried, e.g. by beep signals.
  • the heater HT is of a type that provides hot air to the hair
  • an outlet of an air channel in which the heater HT is located is placed at the beginning of the hair channel HC, near the hair inlet 11.
  • the air flow is balanced in such a way that enough air goes through the heater to cool it and provide hot air to the hair. For example, about 50% of the air flow in the hair channel comes through the hair inlet, and about 50% of the air flow in the hair channel comes from the channel (or channels) in which the heater HT is positioned. Once the hair is closing the hair inlet 11, the hot air ratio will increase.
  • a mechanism may be provided to make the inlet 11 narrower once hair has entered the hair dryer, so that less cold air can enter the hair dryer through the inlet 11.
  • the air channel in which the heater HT is located may have its own inlet 12 for cold air in case there is no recirculation or insufficient recirculation to ensure a sufficiently large airflow to cool the heater HT and to provide a sufficient amount of hot air to the hair.
  • the heater HT can be controlled with a temperature switch.
  • the temperature in the hair channel HC is preferably around 70 ⁇ 100 °C.
  • the heater HT may be a conventional (coil/ceramic) heater.
  • the heater HT may have a power between 1000 W and 2500 W, such as a 1600 W or 2100 W heater as used in conventional hair dryers.
  • the heater HT is element-based, it can be placed along the hair channel walls (e.g. a PTC heater/ thin film heater). Again the surface can be provided with dimples to improve heat exchange.
  • the heater capacity can be less as all the heat flows along the hairs. A lower heater wattage allows for a cordless, i.e. battery-operated device, as efficiency is better.
  • the entire hair channel HC can be made transparent/mirrored to allow all the light passing through and multiple times hit the hair.
  • heat generated by the LED units is preferably reused to heat the hair, e.g. by means of an airflow that has passed the LED units or cooling bodies thereof.
  • a valve V1 at the outlet of the hot air channel can be closed so as to ensure that the suction through the inlet I is increased.
  • IR sensor inside to measure the temp of the hair.
  • Other sensors can be added, such as a camera allowing for settings of the fan F and/or heater HT and/or any ionizer to be adjusted based on an analysis (possibly involving artificial intelligence) of images taken by the camera.
  • the battery can be cooled by the air in the hair channel HC.
  • the hair dryer can be connected with IoT, e.g. the device may have a Bluetooth connection to a smartphone having an app so that the device can be controlled by means of the smartphone, which makes particularly sense if the hair dryer is a tabletop device placed on a desk at the back of the user while the hair dryer is in use so that any controls on the hair dryer cannot be reached.
  • the device may have a UI.
  • the hair dryer can be handheld with or without power cord. The device can be put on a desk and positioned under an angle.
  • An inner wall of the hair channel HC is preferably provided with a covering of a water absorbing material for absorbing water and/or a material to break / reduce the surface tension of the water droplets so as to increase the dry rate.
  • the water absorbing material can be regenerated by letting hot air pass the hair channel without hair being present.
  • the hair may alternatively be dried without applying hot air, viz. by using ultrasound e.g. as described in EP 3416521 B1 (attorneys' ref.: 2016PF00205).
  • hair health can be measured by measuring the friction in a manner shown in our co-pending application WO 2019/057575 (attorneys' ref.: 2017PF02274).

Landscapes

  • Cleaning And Drying Hair (AREA)
EP20184370.3A 2020-07-07 2020-07-07 Haartrockner Withdrawn EP3935993A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20184370.3A EP3935993A1 (de) 2020-07-07 2020-07-07 Haartrockner
PCT/EP2021/068451 WO2022008408A1 (en) 2020-07-07 2021-07-05 Hair dryer
PL21739142.4T PL4178394T3 (pl) 2020-07-07 2021-07-05 Suszarka do włosów
CN202180048645.0A CN115867168A (zh) 2020-07-07 2021-07-05 吹风机
US18/014,196 US20230255335A1 (en) 2020-07-07 2021-07-05 Hair dryer
EP21739142.4A EP4178394B1 (de) 2020-07-07 2021-07-05 Haartrockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20184370.3A EP3935993A1 (de) 2020-07-07 2020-07-07 Haartrockner

Publications (1)

Publication Number Publication Date
EP3935993A1 true EP3935993A1 (de) 2022-01-12

Family

ID=71523001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20184370.3A Withdrawn EP3935993A1 (de) 2020-07-07 2020-07-07 Haartrockner

Country Status (1)

Country Link
EP (1) EP3935993A1 (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307489A2 (fr) * 1975-04-17 1976-11-12 Oreal Sechoir pour cheveux perfectionne, en particulier pour cheveux longs
US20120317829A1 (en) * 2011-06-14 2012-12-20 Yong Tok Kim Hair dryer system
KR20160024677A (ko) * 2014-08-26 2016-03-07 강철원 긴머리용 헤어드라이기
US20160150864A1 (en) 2014-12-02 2016-06-02 RevAir, LLC Vacuum assisted systems and methods for grooming hair
WO2019027211A1 (ko) * 2017-08-03 2019-02-07 김창기 헤어 드라이기
WO2019048357A1 (en) 2017-09-10 2019-03-14 Koninklijke Philips N.V. HAIRSTOCKING DEVICE
WO2019057575A1 (en) 2017-09-20 2019-03-28 Koninklijke Philips N.V. DEVICE FOR MEASURING HAIR PROPERTIES
CN209547321U (zh) * 2019-01-15 2019-10-29 莱克电气股份有限公司 具备卷发功能的电吹风机
KR102067545B1 (ko) * 2018-07-30 2020-01-17 상명대학교 천안산학협력단 베개형 모발 건조기
EP3416521B1 (de) 2016-02-17 2020-04-08 Koninklijke Philips N.V. Ultraschalltrocknen und -formen von haaren

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307489A2 (fr) * 1975-04-17 1976-11-12 Oreal Sechoir pour cheveux perfectionne, en particulier pour cheveux longs
US20120317829A1 (en) * 2011-06-14 2012-12-20 Yong Tok Kim Hair dryer system
KR20160024677A (ko) * 2014-08-26 2016-03-07 강철원 긴머리용 헤어드라이기
US20160150864A1 (en) 2014-12-02 2016-06-02 RevAir, LLC Vacuum assisted systems and methods for grooming hair
EP3416521B1 (de) 2016-02-17 2020-04-08 Koninklijke Philips N.V. Ultraschalltrocknen und -formen von haaren
WO2019027211A1 (ko) * 2017-08-03 2019-02-07 김창기 헤어 드라이기
WO2019048357A1 (en) 2017-09-10 2019-03-14 Koninklijke Philips N.V. HAIRSTOCKING DEVICE
WO2019057575A1 (en) 2017-09-20 2019-03-28 Koninklijke Philips N.V. DEVICE FOR MEASURING HAIR PROPERTIES
KR102067545B1 (ko) * 2018-07-30 2020-01-17 상명대학교 천안산학협력단 베개형 모발 건조기
CN209547321U (zh) * 2019-01-15 2019-10-29 莱克电气股份有限公司 具备卷发功能的电吹风机

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