EP3721747A1 - Kabelloser haartrockner - Google Patents

Kabelloser haartrockner Download PDF

Info

Publication number
EP3721747A1
EP3721747A1 EP19168317.6A EP19168317A EP3721747A1 EP 3721747 A1 EP3721747 A1 EP 3721747A1 EP 19168317 A EP19168317 A EP 19168317A EP 3721747 A1 EP3721747 A1 EP 3721747A1
Authority
EP
European Patent Office
Prior art keywords
air outlet
hair dryer
outlet grill
aog
fan
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Withdrawn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
EP19168317.6A
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 EP19168317.6A priority Critical patent/EP3721747A1/de
Priority to PCT/EP2020/060171 priority patent/WO2020208147A1/en
Priority to CN202020522065.3U priority patent/CN212972060U/zh
Publication of EP3721747A1 publication Critical patent/EP3721747A1/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Withdrawn legal-status Critical Current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
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands

Definitions

  • the invention relates to a cordless hair dryer.
  • Hair dryers usually have an air outlet grill that serves to prevent life parts from being touched, because these life parts may carry a dangerous voltage, and because these life parts are hot.
  • An aspect of the invention provides a cordless hair dryer comprising a battery, a fan that is electrically coupled to the battery, and a heating unit that is electrically coupled to the battery, in which an air outlet grill is arranged for preventing the heating unit from being contacted by an elongated object having a first diameter of at least 8 mm while allowing objects having a diameter smaller than the first diameter to pass.
  • the air outlet grill is further arranged for preventing the fan to be contacted by the elongated object having a length of at least 50 mm.
  • the notion fan means the combination of the rotating fan blades and the motor driving the rotating fan blades.
  • the air outlet grill has a hollow shape.
  • the air outlet grill is mounted to a motor mount of a motor of the fan.
  • Air outlet grills have as a disadvantage that they hamper the airflow, which is particularly inconvenient in case of cordless hair dryers that run on batteries that inherently have a limited capacity. Especially for cordless hair dryers it thus holds that the airflow should be hampered as little as possible.
  • Cordless hair dryers differ from hair dryers operated by a cable to the mains network (e.g. 240 V) in that in cordless hair dryers, such dangerous voltages are not present. This means that the air outlet grill of a cordless hair dryer does not need to protect users from dangerous voltages, and that it suffices to protect users from touching a hot heating unit.
  • the air outlet grill prevents a standardized test probe (e.g. IEC61032 #18) having a diameter of 8.6 mm and a length of 57.9 mm from touching moving and/or hot parts when it is attempted to insert that test probe into the hair dryer from the front.
  • a standardized test probe e.g. IEC61032 #18
  • the air outlet grill has a curved shape, viz. hollow seen from the front side of the hair dryer.
  • the air outlet grid is positioned as close to the center and as deep as possible with intervals that are as large as possible in view of the need to prevent a user's fingers from touching a hot heating unit, and the IEC standardized test probe from entering. This contributes to minimizing the resistance for the air flow.
  • Figs. 1A and 1B illustrate an embodiment of a cordless hair dryer in accordance with the present invention.
  • Figs. 1A and 1B show a cross-section and a front view, respectively, of a front part of a cordless hair dryer whose fan and heating unit HU are powered by a battery (not shown).
  • the fan has a motor M that is mounted to a housing H of the cordless hair dryer by means of a motor mount MM. Thin dotted lines link the cross-section of Fig. 1A to the front view of Fig. 1B .
  • the cordless hair dryer has a housing H in which the heating unit HU is mounted on a mica structure Mi (shown by striped lines).
  • the heating unit is HU removed from a front end of the housing H by a distance d, which may be 15 mm.
  • a user's fingers are prevented from touching the heating unit HU by an air outlet grill AOG.
  • the air outlet grill AOG may be mounted to the housing H, the mica structure Mi, and/or the motor mount MM.
  • the air outlet grill AOG is mounted to the motor mount MM and only has 2 concentric circle-shaped elements as shown in Fig. 1B (this corresponds to only 4 dots in the cross-section of Fig. 1A ).

Landscapes

  • Cleaning And Drying Hair (AREA)
EP19168317.6A 2019-04-10 2019-04-10 Kabelloser haartrockner Withdrawn EP3721747A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19168317.6A EP3721747A1 (de) 2019-04-10 2019-04-10 Kabelloser haartrockner
PCT/EP2020/060171 WO2020208147A1 (en) 2019-04-10 2020-04-09 Cordless hair dryer
CN202020522065.3U CN212972060U (zh) 2019-04-10 2020-04-10 无绳吹风机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19168317.6A EP3721747A1 (de) 2019-04-10 2019-04-10 Kabelloser haartrockner

Publications (1)

Publication Number Publication Date
EP3721747A1 true EP3721747A1 (de) 2020-10-14

Family

ID=66105009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19168317.6A Withdrawn EP3721747A1 (de) 2019-04-10 2019-04-10 Kabelloser haartrockner

Country Status (3)

Country Link
EP (1) EP3721747A1 (de)
CN (1) CN212972060U (de)
WO (1) WO2020208147A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647757A (en) * 1985-04-30 1987-03-03 Clairol Incorporated Hair dryer heater section providing uniform outlet air temperature distribution
CN204861703U (zh) * 2015-08-30 2015-12-16 安徽机电职业技术学院 一种负离子吹风机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2527028A (en) * 2014-04-22 2015-12-16 Robert John Watkins Hairdryer
US10660418B2 (en) * 2017-07-14 2020-05-26 Spectrum Brands, Inc. Air-moving appliance including an attachment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647757A (en) * 1985-04-30 1987-03-03 Clairol Incorporated Hair dryer heater section providing uniform outlet air temperature distribution
CN204861703U (zh) * 2015-08-30 2015-12-16 安徽机电职业技术学院 一种负离子吹风机

Also Published As

Publication number Publication date
CN212972060U (zh) 2021-04-16
WO2020208147A1 (en) 2020-10-15

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