EP3172985B1 - Hand held appliance - Google Patents

Hand held appliance Download PDF

Info

Publication number
EP3172985B1
EP3172985B1 EP16200466.7A EP16200466A EP3172985B1 EP 3172985 B1 EP3172985 B1 EP 3172985B1 EP 16200466 A EP16200466 A EP 16200466A EP 3172985 B1 EP3172985 B1 EP 3172985B1
Authority
EP
European Patent Office
Prior art keywords
primary fluid
handle
flow path
appliance
directing plate
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.)
Not-in-force
Application number
EP16200466.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3172985A1 (en
Inventor
Ben BOBILLIER
William Hassett
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.)
Dyson Technology Ltd
Original Assignee
Dyson Technology Ltd
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 Dyson Technology Ltd filed Critical Dyson Technology Ltd
Publication of EP3172985A1 publication Critical patent/EP3172985A1/en
Application granted granted Critical
Publication of EP3172985B1 publication Critical patent/EP3172985B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A45D20/04—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
    • A45D20/52—Hair-drying combs or hair-drying brushes, adapted for heating by an external heating source, e.g. air stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns

Definitions

  • This invention relates to a hand held appliance, in particular a hair care appliance and a fluid outlet from such an appliance.
  • Blowers and in particular hot air blowers are used for a variety of applications such as drying substances such as paint or hair and cleaning or stripping surface layers.
  • hot air blowers such as hot styling brushes are used to style hair from a wet or dry condition.
  • a motor and fan which draw fluid into a body; the fluid may be heated prior to exiting the body.
  • the motor is susceptible to damage from foreign objects such as dirt or hair so conventionally a filter is provided at the fluid intake end of the blower.
  • Conventionally such appliances are provided with a nozzle which can be attached and detached from the appliance and changes the shape and velocity of fluid flow that exits the appliance. Such nozzles can be used to focus the outflow of the appliance or to diffuse the outflow depending on the requirements of the user at that time.
  • Document GB2515809 discloses a hair dryer comprising a body, a primary fluid flow path and a secondary fluid flow path.
  • the invention provides a hair care appliance according to claim 1.
  • the flow directing plate is generally orthogonal to the longitudinal axis A-A.
  • the at least two guide surfaces extend along the longitudinal axis A-A towards the apex.
  • the primary fluid flow path is generally annular.
  • the appliance further comprises a handle, wherein the primary fluid flow path comprises a primary fluid inlet into the appliance, and wherein the primary fluid inlet is in the handle.
  • the primary fluid flow path is generally circular.
  • the flow directing plate is for directing flow from the handle as it enters into the body.
  • the flow directing plate deflects the primary fluid flow around the duct.
  • primary fluid flows through the handle in a first direction and in the body in a second direction.
  • the at least two guide surfaces are radially spaced from the handle.
  • the body further comprises a heater, wherein the heater is located downstream of the flow directing plate.
  • the body is generally tubular and has an upper half and a lower half and the handle is connected to the lower half. It is preferred that the region of relatively high velocity is in the lower half of the body. Preferably, the region of relatively low velocity is in the upper half of the body.
  • the primary fluid flow path has a region of relatively high velocity and a region of relatively low velocity and the at least two guide surfaces are in the region of relatively low velocity.
  • larger components of the PCB are located in the upper half of the body.
  • smaller components of the PCB are located in the lower half of the body.
  • larger components of the PCB are components which extend the furthest from a circuit board on which they are mounted.
  • the appliance is a hairdryer.
  • Figures 1 and 2 show a hairdryer 10 with a handle 20 and a body 30.
  • the handle has a first end 22 which is connected to the body 30 and a second end 24 distal from the body 30 and which includes a primary fluid inlet 40.
  • Power is supplied to the hairdryer 10 via a cable 50.
  • a plug At a distal end of the cable 50 from the hairdryer 10 a plug (not shown) is provided, the plug may provide electrical connection to mains power or to a battery pack for example.
  • the handle 20 has an outer wall 200 which extends from the body 30 towards a distal end 24 of the handle. At the distal end 24 of the handle an end wall 210 extends across the outer wall 200.
  • the cable 50 enters the hairdryer through this end wall 210.
  • the primary fluid inlet 40 in the handle 20 includes first apertures that extend around and along 42 the outer wall 200 of the handle in a series of rows and/or columns that extend from the distal end 24 of the handle 20 and second apertures that extend across 46 and through the end wall 210 of the handle 20.
  • the cable 50 is located approximately in the middle of the end wall 210 so extends from the centre of the handle 20.
  • the handle 20 has a longitudinal axis X-X along which the outer wall 200 extends from the body 30 towards the distal end 24.
  • the cable 50 extends centrally from the handle 20 as this means the hairdryer is balanced regardless of the orientation of the handle 20 in a users' hand. Also, if the user moves the position of their hand on the handle 20 there will be no tugging from the cable 50 as it does not change position with respect to the hand when the hand is moved. If the cable were offset and nearer one side of the handle then the weight distribution of the hairdryer would change with orientation which is distracting for the user.
  • a fan unit 70 Upstream of the primary fluid inlet 40, a fan unit 70 is provided.
  • the fan unit 70 includes a fan and a motor.
  • the fan unit 70 draws fluid through the primary fluid inlet 40 towards the body 30 through a primary fluid flow path 400 that extends from the primary fluid inlet 40 and into the body 30 where the handle 20 and the body 30 are joined 90.
  • the body 30 has a first end 32 and a second end 34, the primary fluid flow path 400 continues through the body 30 towards the second end 34 of the body, around a heater 80 and to a primary fluid outlet 440 where fluid that is drawn in by the fan unit exits the primary fluid flow path 400.
  • the primary fluid flow path 400 is non-linear and flows through the handle 20 in a first direction and through the body 30 in a second direction which is orthogonal to the first direction.
  • the body 30 includes an outer wall 360 and an inner duct 310.
  • the primary fluid flow path 400 extends along the body from the junction 90 of the handle 20 and the body 30 between the outer wall 360 and the inner duct 310 towards the primary fluid outlet 440 at the second end 34 of the body 30.
  • An inner wall 260 extends within the outer wall 360.
  • the inner wall 260 at least partially defines the primary fluid outlet 440 and extends from the second end 34 of the body 30 between the inner duct 310 and the outer wall 360.
  • Another fluid flow path is provided within the body; this flow is not directly processed by the fan unit or the heater but is drawn into the hairdryer by the action of the fan unit producing the primary flow through the hairdryer. This fluid flow is entrained into the hairdryer by the fluid flowing through the primary fluid flow path 400.
  • the first end 32 of the body includes a fluid inlet 320 and the second end 34 of the body includes a fluid outlet 340. Both the fluid inlet 320 and the fluid outlet 340 are at least partially defined by the inner duct 310 which is an inner wall of the body 30 and extends within and along the body.
  • a fluid flow path 300 extends within the inner duct 310 from the fluid inlet 320 to the fluid outlet 340.
  • a side wall 350 extends between the outer wall 360 and the inner duct 310. This side wall 350 at least partially defines the fluid inlet 320.
  • the primary fluid outlet 440 is annular and surrounds the fluid flow path.
  • a PCB (printed control circuit) 75 including the control electronics for the hairdryer is located in the body 30 near the side wall 350 and fluid inlet 320.
  • the PCB 75 is ring shaped and extends round the inner duct 310 between the inner duct 310 and the outer wall 360.
  • the PCB 75 is in fluid communication with the primary fluid flow path 400.
  • the PCB 75 extends about the fluid flow path 300 and is isolated from the fluid flow path 300 by the inner duct 310.
  • the PCB 75 controls parameters such as the temperature of the heater 80 and the speed of rotation of the fan unit 70.
  • Internal wiring (not shown) electrically connects the PCB 75 to the heater 80 and the fan unit 70 and the cable 50.
  • Control buttons 62, 64 are provided and connected to the PCB 75 to enable a user to select from a range of temperature settings and flow rates for example.
  • a flow directing plate 700 Downstream of the PCB 75, is the heater 80 and a flow directing plate 700 is provided between the PCB 75 and the heater 80.
  • the flow directing plate provides thermal protection for the PCB 75 when the heater 80 switched on amongst other things.
  • fluid is drawn into the primary fluid flow path 400 by the action of the fan unit 70, is optionally heated by the heater 80 and exits from the primary fluid outlet 440.
  • This processed flow causes fluid to be entrained into the fluid flow path 300 at the fluid inlet 320.
  • the fluid combines with the processed flow at the second end 34 of the body.
  • the processed flow exits the primary fluid outlet 440 and the hairdryer as an annular flow which surrounds the entrained flow that exits from the hairdryer via the fluid outlet 340.
  • fluid that is processed by the fan unit and heater is augmented by the entrained flow.
  • the handle 20 is generally tubular and the primary fluid flow path 400 is generally circular as it enters the junction 90 between the handle 20 and the body 30. At this point the primary fluid flow path 400 changes direction by 90° and from a circular flow to an annular flow around the duct 310 between the duct 310 and the outer wall 360 of the body 30. These changes affect the velocity of flow in the primary fluid flow path 400.
  • the body 30 is generally symmetrical about a longitudinal axis A-A which extends along the length of the body 30, the duct 310 and outer wall 360 are concentric as is the heater 80 located between the duct 310 and the outer wall 360.
  • the primary fluid in the primary fluid flow path 400 reaches the junction 90 between the body 30 and the handle 20
  • the primary fluid must change both direction and shape. This creates a region of high velocity flow in the body 30 by the junction 90 and a region of lower velocity flow radially spaced within the body 30 from the junction 90. If we consider the body 30 to have an upper half 380 and a lower half 390 where the upper half 380 is radially spaced away from the handle 20 and the lower half 390 includes the junction 90 between the body 30 and the handle 20 then the lower half 390 has flow at a relatively higher velocity than the upper half 380.
  • the flow directing plate 700 is provided to curve or direct the flow within the primary fluid flow path 400 over and around the PCB 75 and components mounted on the PCB to minimise any pressure losses due to the location of the PCB and due to the change of direction of the primary fluid flow path 400 as it enters the body 30.
  • the fluid entering the body 30 flows both towards the primary fluid outlet 440 and around the duct 310 to the upper part 380 of the body 30.
  • the flow directing plate 700 includes a pair of guide surfaces 710, 720 which direct fluid in the upper part 380 of the body 30 as the fluid flows around the duct 310 on either side of the duct 310 to meet in the upper part 380 of the body 30.
  • the two guide surfaces 710, 720 are preferably integral with the flow directing plate 700 and are arranged so that each guide surface 710, 720 curves away from the flow directing plate 700 towards the second end 34 of the body 30 and meets the other respective guide surface 720, 710 at an apex 730.
  • the two guide surfaces 710, 720 reduce turbulence within the body 30 by directing the fluid flowing within the upper half 380 of the body 30 towards the primary fluid outlet 440.
  • the invention has been described in detail with respect to a hairdryer however, it is applicable to any appliance that draws in a fluid and directs the outflow of that fluid from the appliance.
  • the appliance can be used with or without a heater; the action of the outflow of fluid at high velocity has a drying effect.
  • the fluid that flows through the appliance is generally air, but may be a different combination of gases or gas and can include additives to improve performance of the appliance or the impact the appliance has on an object the output is directed at for example, hair and the styling of that hair.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning And Drying Hair (AREA)
EP16200466.7A 2015-11-26 2016-11-24 Hand held appliance Not-in-force EP3172985B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1520871.3A GB2544777B (en) 2015-11-26 2015-11-26 Hand held appliance

Publications (2)

Publication Number Publication Date
EP3172985A1 EP3172985A1 (en) 2017-05-31
EP3172985B1 true EP3172985B1 (en) 2019-04-10

Family

ID=55177267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16200466.7A Not-in-force EP3172985B1 (en) 2015-11-26 2016-11-24 Hand held appliance

Country Status (5)

Country Link
US (1) US20170150798A1 (ja)
EP (1) EP3172985B1 (ja)
JP (1) JP6353014B2 (ja)
CN (2) CN106974416B (ja)
GB (1) GB2544777B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11653737B1 (en) 2021-11-12 2023-05-23 Sharkninja Operating Llc Hair care appliance

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2543537B (en) 2015-10-21 2018-09-19 Dyson Technology Ltd A handheld appliance
GB2543536B (en) 2015-10-21 2019-01-02 Dyson Technology Ltd A handheld appliance
GB2543538B (en) * 2015-10-21 2018-05-09 Dyson Technology Ltd A haircare appliance
GB2544777B (en) * 2015-11-26 2018-05-02 Dyson Technology Ltd Hand held appliance
CN111838937B (zh) * 2018-12-06 2022-12-09 深圳素士科技股份有限公司 便于手持的毛发干燥装置
CN110403326B (zh) * 2019-07-11 2023-10-27 追觅科技(苏州)有限公司 一种干发器
CN110419842B (zh) * 2019-09-12 2023-12-19 追觅科技(苏州)有限公司 手持式吹风机
USD1021238S1 (en) 2022-06-02 2024-04-02 Sharkninja Operating Llc Hair care appliance
US20240245190A1 (en) 2023-01-19 2024-07-25 Sharkninja Operating Llc Identification of hair care appliance attachments
USD1013266S1 (en) * 2023-06-20 2024-01-30 Dejun Li Hair dryer

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
JPH0265801A (ja) * 1988-08-31 1990-03-06 Osaka Cement Co Ltd 遠赤外線を放射する低温ヘヤドライヤーおよび該低温ヘヤドライヤーに用いる遠赤外線放射体
JP4050001B2 (ja) * 2001-02-09 2008-02-20 株式会社 リーテック ガス燃焼式のヘアードライヤー
GB2409158A (en) * 2003-12-18 2005-06-22 Freedom Innovations Ltd Cordless hairdryer with baffles
DE102009049838A1 (de) * 2009-10-16 2011-04-21 Marion Perplies Luftapparat und Aufsatz für einen Luftapparat
GB201020847D0 (en) * 2010-12-08 2011-01-19 Jemella Ltd A hair dryer
GB201205679D0 (en) * 2012-03-30 2012-05-16 Dyson Technology Ltd A hand held appliance
GB2515814B (en) * 2013-07-05 2016-09-28 Dyson Technology Ltd A handheld appliance
GB2515809B (en) * 2013-07-05 2015-08-19 Dyson Technology Ltd A handheld appliance
GB2531431B (en) * 2013-07-24 2016-11-02 Dyson Technology Ltd An attachment for a handheld appliance
GB2518656B (en) * 2013-09-27 2016-04-13 Dyson Technology Ltd Hand held appliance
GB2544777B (en) * 2015-11-26 2018-05-02 Dyson Technology Ltd Hand held appliance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11653737B1 (en) 2021-11-12 2023-05-23 Sharkninja Operating Llc Hair care appliance
US11832700B2 (en) 2021-11-12 2023-12-05 Sharkninja Operating Llc Hair care appliance

Also Published As

Publication number Publication date
CN206576490U (zh) 2017-10-24
EP3172985A1 (en) 2017-05-31
GB2544777B (en) 2018-05-02
US20170150798A1 (en) 2017-06-01
JP2017094094A (ja) 2017-06-01
GB201520871D0 (en) 2016-01-13
JP6353014B2 (ja) 2018-07-04
CN106974416B (zh) 2020-10-09
CN106974416A (zh) 2017-07-25
GB2544777A (en) 2017-05-31

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