EP2779863A1 - Hairdryer with concentric blades - Google Patents
Hairdryer with concentric bladesInfo
- Publication number
- EP2779863A1 EP2779863A1 EP12795548.2A EP12795548A EP2779863A1 EP 2779863 A1 EP2779863 A1 EP 2779863A1 EP 12795548 A EP12795548 A EP 12795548A EP 2779863 A1 EP2779863 A1 EP 2779863A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hair dryer
- tubular body
- longitudinal axis
- outlet
- dryer according
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 description 7
- 238000007664 blowing Methods 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
-
- 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
- A45D20/38—Arrangement of the electric heating means
-
- 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 the technical field of hair dryers and, more particularly, to electric hand-held hairdryers used by professionals and / or private individuals.
- a hand-held hair dryer generally comprises an elongate tubular body which contains a motor-fan unit formed of a propeller integral with the drive shaft of an electric motor.
- the electric motor is held in the tubular body by rigid arms which ensure the centering of the helix relative to the inner wall of the tubular body.
- the tubular body is equipped with a handle comprising a connection cord to the electrical network and control members of the operation of the electric motor.
- the motorcycle fan unit draws air through an inlet located at the rear of the tubular body to push back through an outlet located at the front of the latter.
- the hair dryer also comprises, downstream of the propeller, means for electric heating of the blown air.
- Such a hair dryer gives satisfaction with regard to its primary function of drying hair.
- known hairdryers have the disadvantage of being particularly noisy which induces fatigue during their prolonged use by a professional or a nuisance for the user and those around him.
- This noise nuisance results in particular from the speed of rotation of the engine which is generally between 7000 and 16000 rpm.
- One way to limit noise pollution is to reduce the speed of rotation of the motor.
- the speed of rotation is reduced, it becomes necessary, to maintain a satisfactory air flow, to increase the diameter of the propeller.
- such an increase in the diameter of the helix modifies the proportions of the hair dryer which can be difficult to handle if it has a typical configuration of the pistol type with a handle extending perpendicular to the blowing axis of the hair dryer.
- the increase in the diameter of the helix induces such an increase in the outer diameter of the body of the dryer. hair that it is not possible to hold it by his body with one hand during the making of a hairstyle.
- the invention relates to a hair dryer comprising:
- tubular body of longitudinal axis ⁇ which is open at a said front end of output and which comprises, near a rear end opposite the outlet, a substantially peripheral air inlet,
- a motor-fan unit which is arranged in the tubular body between the inlet and the outlet and which comprises an electric motor driving in rotation, along an axis parallel to or coincident with the longitudinal axis ⁇ , a rotor located in a chamber of working and adapted to suck air through the entrance and push back through the exit,
- this hair dryer comprises:
- a central core of longitudinal axis ⁇ comprising a peripheral surface which is concave and converges towards the working chamber and which delimits, with the tubular body, the air inlet and a duct d ring-shaped suction,
- At least one annular curved fin having a longitudinal axis ⁇ whose intrados and extrados converge towards the working chamber.
- the implementation of the central core with its concave and converging peripheral surface makes it possible to define an angled suction duct which rectifies the flow of air to the extent that at the outlet the flow of air is substantially parallel to the air flow.
- longitudinal axis ⁇ while at the inlet the air flow forms a non-zero angle with the longitudinal axis ⁇ .
- the use of the annular fin makes it possible to obtain, in the suction duct, a laminar displacement of the sucked air, which contributes to increasing the performance of the hair dryer by reducing the pressure losses by upstream of the working chamber.
- the implementation of the central core associated with the peripheral air inlet allows to release the rear face of the hair dryer which can then be used to place gripping means or fixing.
- the suction of the air does not intervene at the level of the rear face of the hair dryer, it is possible to fix the hair dryer to a wall with its backside close to the wall without risk of degradation of the performance of the hair dryer.
- the configuration of the aeraulic circuit of the hair dryer according to the invention is particularly suitable for so-called large diameter hair dryers.
- the smallest dimension of the output section is greater than or equal to 80 mm.
- the output section may be in the form of a disk whose diameter is greater than or equal to 80 mm.
- the configuration of the air flow of the hair dryer according to the invention is also particularly suitable for so-called compact hair dryers whose length and outside diameter have close values.
- the tubular body has a length, measured parallel to the longitudinal axis ⁇ between the outlet and a rear end of the core, which is less than or equal to 1.5 times the largest outside diameter of the tubular body.
- the largest outer diameter of the tubular body is between 100 mm and 250 mm.
- the core comprises, opposite the outlet, a flat or convex back.
- the upstream portion of the peripheral surface of the central core which is located in the immediate vicinity of the air inlet, is tangential to either a plane perpendicular to the longitudinal axis ⁇ , or to a cone of revolution of longitudinal axis ⁇ which converges towards the working chamber and whose apex angle is obtuse,
- the upstream portion of the intrados and the extrados of each fin is tangential to a cone of revolution of longitudinal axis ⁇ which converges towards the working chamber and whose apex angle is obtuse, -
- the downstream portion of the lower surface and the upper surface of each fin is tangential to a cylinder of revolution of longitudinal axis ⁇ .
- the electric motor is located inside the core.
- the motor-fan can be of any suitable nature, for example a centrifugal fan motor.
- the rotor comprises at least one axial fan propeller. The implementation of such an axial fan allows for a compact fan in that the working chamber can have a small axial length.
- the hair dryer can be equipped or associated with different types of gripping means and / or wall brackets or table.
- the hair dryer comprises gripping means comprising a palmar support surface for at least a portion of the palmar surface of a hand and a counter-support surface on at least part of the back of the hand.
- gripping means comprising a palmar support surface for at least a portion of the palmar surface of a hand and a counter-support surface on at least part of the back of the hand.
- the gripping means are adapted so that the bearing surface is located opposite the outlet relative to the tubular body.
- this configuration is particularly suitable for a user drying the hair of another person.
- the gripping means are movable between a first position in which the palmar bearing surface is located opposite the outlet relative to the tubular body and a second position. wherein the bearing surface is located on the side of the tubular body.
- this configuration is particularly suitable for a drying user himself insofar as the user can choose the most appropriate grip configuration depending on the hairstyle that he realizes, from the area of his hair during drying or from his position.
- the gripping means comprises a plate whose upper face forms the palmar surface and a hoop which is secured to the tray and which delimits with the tray a space for the passage of part of the hand, the face of the arch oriented towards the plate forming the counter-support surface.
- the plate is fixed on the tubular body by at least one arm which is connected to the tubular body by a pivot link axis perpendicular to the longitudinal axis ⁇ .
- the hair dryer according to the invention has, at equivalent performance or higher, a noise pollution lower than that of hair dryers according to the prior art.
- FIG. 1 is a schematic perspective of a hair dryer according to the invention whose output is equipped with a drying nozzle.
- FIG. 2 is a schematic perspective torn along an axial plane of the hair dryer shown in Figure 1 without drying nozzle.
- a hair dryer according to the invention, as illustrated in Figure 1 and generally designated by the reference 1, comprises a tubular body 2 substantially symmetrical in revolution along a longitudinal axis ⁇ , except for what relates to the gripping means 3 which are located at the rear as will be described later.
- the tubular body 2 can be formed in several pieces and, for example, in the form of two half-shells made of plastics material assembled along an axial plane and supplemented by inserts, especially with regard to the gripping means 3.
- the tubular body 2 comprises, at the front, an open end 4 of the air outlet.
- the outlet 4 has a substantially circular shape, it being understood that the air outlet 4 could also have an ellipse shape or an oblong shape.
- the outlet 4 is equipped with a removable nozzle 5, not shown in FIG. 2, making it possible to give the air flows an elliptical shape or oblong.
- the tubular body 2 further comprises near a rear end 6, opposite the outlet 4, a peripheral air inlet 7 which extends over the entire periphery of the body 2.
- the hair dryer 1 comprises a motorcycle fan unit 10 disposed in the tubular body 2 between the inlet 7 and the outlet 4.
- the fan motor unit 10 comprises a rotor 1 1 which is located in a working chamber 12 connected, on the one hand, to the air inlet 7 by a suction duct 13 and, on the other hand, to the outlet of the air 4 by a blowing duct 14.
- the rotor 1 1 is integral with the drive shaft 15 of an electric motor 16 whose axis of rotation is coaxial with the longitudinal axis ⁇ of the tubular body 2.
- the rotor 1 1 is formed by an axial fan propeller sucking and blowing the air in a direction parallel to the longitudinal axis ⁇ .
- the suction duct 13 must straighten the flow of air sucked for, from a substantially radial direction at the inlet 7, give it a axial orientation before reaching the working chamber 12.
- the hair dryer 1 comprises, at the rear of the tubular body 2, a central core 20 comprising a peripheral surface 21 which is concave and converges towards the chamber of 12.
- the central core 20 has a substantially symmetrical shape of revolution of axis ⁇ and the peripheral surface 21 corresponds, according to the illustrated example, to a portion of the surface of a torus axis ⁇ .
- the central core 20 contributes to confer, by its peripheral surface 21 and with the tubular body 2, an annular shape to the suction duct 13.
- the core 20 is hollow and encloses in its central part the motor electric 16.
- the hair dryer comprises at least one and, according to the example shown, two annular curved fins 22 and 23.
- Each curved vane 22 and 23 comprises, on the one hand, a concave underlining 24 oriented towards the tubular body 2 and, on the other hand, a convex extrados 25 oriented towards the core 20.
- the intrados 24 and the extrados 25 of each fin converge towards the working chamber 12.
- the curved fins 22 and 23 are kept at a distance from each other and connected to the core 20 and to the tubular body 2 by four radial spacers 26, of which only three are visible in Figure 1.
- the implementation of the curved fins 22 and 23 allows, in conformation of the peripheral surface and rotation speed identical, an increase in efficiency of 30% compared to a configuration without fins.
- the upstream portion 30 of the peripheral surface 21 of the central core 20, that is to say the portion of the peripheral surface 21 located in the immediate vicinity of the air inlet 7 is preferably tangent to a plane perpendicular to the axis ⁇ .
- the downstream portion of the peripheral surface 21, that is to say the portion of the peripheral surface 21 located in the immediate vicinity of the working chamber 12 is tangential to a cylinder of revolution of axis ⁇ .
- the upstream portion 32 of the intrados and extrados of each fin is tangent with a cone of revolution axis ⁇ which converges to the working chamber 12 and whose apex angle a is obtuse.
- the downstream portion 33 of the intrados and extrados of each fin is, in turn, tangent with a cylinder C of revolution axis ⁇ .
- the peripheral edge 35 of the tubular body 2, which contributes to delimit the air inlet 7, is also curved towards the outside. outside so that its inner face is convex and substantially parallel to the intrados of the fin 23 opposite.
- the hair dryer 1 further comprises, downstream of the motorcycle fan unit 10 means 36 for electric heating of the blown air.
- the heating means 36 are located in the blowing chamber 14 and can be made in any suitable manner and, for example, in the form of an electric heating resistance held by radial fins made of insulating materials such as for example sheets of mica.
- the configuration of the hair dryer according to the invention, with the central core 20 and the curved fins allowing a rectification of the air sucked from a substantially radial orientation to give it a substantially axial direction, is particularly suitable for the realization a compact diameter hair dryer.
- compact hairdryer it is to be understood a hair dryer whose length L, measured parallel to the axis ⁇ , between the outlet 4 and a rear end 6 of the core, is less than or equal to 1, 5 times the largest outside diameter D of the tubular body and preferably substantially equal to this diameter D.
- large diameter hair dryer it is to be understood a hair dryer whose smaller dimension d of the outlet section is greater or equal to 80 mm. In the case of a circular outlet section the diameter d of the latter will be greater than or equal to 80 mm.
- the largest outside diameter D of a For example, a hair dryer with a large diameter may be between 100 mm and 250 mm.
- the gripping means 3 comprise, firstly, a palmar bearing surface formed here by the convex back 40.
- the palmar support surface P is intended to provide support for at least a portion of the palmar surface of a user's hand.
- the gripping means 3 comprise, on the other hand, a counter-support surface 41 formed by the inner face of an arch 42 integral with the convex back 40.
- the counter-support surface 41 is then intended to bear against a part the back of the hand whose palmar face rests on the convex back 40.
- the gripping means 3, thus formed, allow a new type of handling of the hair dryer according to the invention. Indeed the hair dryer can be held with the hand substantially open engaged between the hoop 42 and the back 40 which allows a grip more relaxed than in the case where the hand is closed on a handle as is the case for a gun-type hair dryer according to the prior art.
- FIGS. 1 and 2 the gripping means 3 have a fixed position situated opposite the outlet 4.
- FIGS. 1 and 2 another configuration can be envisaged for the gripping means of a dryer. hair according to the invention.
- Figures 3 and 4 illustrate an embodiment of the invention according to which the gripping means 3 are movable between, on the one hand, a first position A, illustrated in Figure 3, in which the surface of the palmar support P is situated opposite the outlet 4 and, secondly, a second position B, illustrated in FIG. 4, in which the palmar bearing surface P is situated on the side of the tubular body 2 .
- the gripping means 3 comprise a plate 50 whose upper face forms the palmar bearing surface P.
- the plate 50 is fixed to the tubular body 2 by two arms 51, only one of which is visible to 3 and 4.
- Each arm 51 then comprises a first end rigidly connected to the plate 50 and, on the opposite side of the plate, a second end which is connected to the tubular body 2 by a pivot connection of axis ⁇ perpendicular to the longitudinal axis ⁇ of the tubular body 2.
- the plate 50 is movable in a 90 ° rotation between its first A and second B positions.
- the hair dryer may then comprise means for locking the rotation of the arms 51 in order to immobilize the plate 50 in one or other of these two positions A or B.
- the gripping means 3 further comprises a hoop 52 which is integral with the plate 50 and which together define a space 53 for the passage of part of the hand of a user.
- the inner face of the arch 52 then forms the counter-support surface intended to bear against the back of the hand of a user as described above.
- the longitudinal axis of the hoop 52 is substantially parallel to the axis of rotation ⁇ of the plate 50.
- the longitudinal axis of the arch 52 may be placed so as to be perpendicular to the axis of rotation ⁇ .
- the longitudinal axis of the arch 52 will be parallel to the longitudinal axis ⁇ of the tubular body when the plate 50 is in its second position B.
- the hair dryer 1, according to the invention, thus constituted operates at equivalent drying performance, emitting less noise than hair dryers according to the previous.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1160561A FR2982747B1 (en) | 2011-11-18 | 2011-11-18 | HAIRDRYER WITH CONCENTRIC FINES |
PCT/FR2012/052628 WO2013072626A1 (en) | 2011-11-18 | 2012-11-14 | Hairdryer with concentric blades |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2779863A1 true EP2779863A1 (en) | 2014-09-24 |
EP2779863B1 EP2779863B1 (en) | 2015-12-30 |
Family
ID=47291142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12795548.2A Active EP2779863B1 (en) | 2011-11-18 | 2012-11-14 | Hairdryer with concentric blades |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2779863B1 (en) |
CN (1) | CN204207259U (en) |
ES (1) | ES2565097T3 (en) |
FR (1) | FR2982747B1 (en) |
WO (1) | WO2013072626A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015217259A (en) * | 2014-05-21 | 2015-12-07 | 三發電器製造廠有限公司 | Hair dryer |
WO2016151605A1 (en) * | 2015-03-20 | 2016-09-29 | Bembo Pietro Gianbattista | Device for hairdryer to reverse the airflow towards the suction side for the ejection of dust |
FR3039377B1 (en) * | 2015-07-28 | 2017-09-01 | Seb Sa | HAIR DRYER WITH COANDA EFFECT AIR OUTPUT DUCT |
FR3039376B1 (en) * | 2015-07-28 | 2017-09-01 | Seb Sa | HAIRDRYER WITH OPTIMIZED AIR INTAKE CANALIZATION |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021705A (en) * | 1983-07-14 | 1985-02-04 | 松下電工株式会社 | Hair dryer |
-
2011
- 2011-11-18 FR FR1160561A patent/FR2982747B1/en not_active Expired - Fee Related
-
2012
- 2012-11-14 ES ES12795548.2T patent/ES2565097T3/en active Active
- 2012-11-14 CN CN201290000974.4U patent/CN204207259U/en not_active Expired - Lifetime
- 2012-11-14 EP EP12795548.2A patent/EP2779863B1/en active Active
- 2012-11-14 WO PCT/FR2012/052628 patent/WO2013072626A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013072626A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013072626A1 (en) | 2013-05-23 |
FR2982747B1 (en) | 2014-01-10 |
EP2779863B1 (en) | 2015-12-30 |
CN204207259U (en) | 2015-03-18 |
FR2982747A1 (en) | 2013-05-24 |
ES2565097T3 (en) | 2016-03-31 |
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