EP0289727B1 - Hand-held electric hair-dryer - Google Patents

Hand-held electric hair-dryer Download PDF

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Publication number
EP0289727B1
EP0289727B1 EP88102911A EP88102911A EP0289727B1 EP 0289727 B1 EP0289727 B1 EP 0289727B1 EP 88102911 A EP88102911 A EP 88102911A EP 88102911 A EP88102911 A EP 88102911A EP 0289727 B1 EP0289727 B1 EP 0289727B1
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EP
European Patent Office
Prior art keywords
hand
hair drier
hand hair
heater
hair dryer
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Expired - Lifetime
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EP88102911A
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German (de)
French (fr)
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EP0289727A3 (en
EP0289727A2 (en
Inventor
Heinz-Juergen Ohlsen
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Robert Krups GmbH and Co KG
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Robert Krups GmbH and Co KG
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Application filed by Robert Krups GmbH and Co KG filed Critical Robert Krups GmbH and Co KG
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    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00Hair drying devices; Accessories therefor
    • A45D20/04Hot-air producers
    • A45D20/08Hot-air producers heated electrically
    • A45D20/10Hand-held drying devices, e.g. air douches
    • A45D20/12Details thereof or accessories therefor, e.g. nozzles, stands

Definitions

  • the invention relates to an electrically operated hand-held hair dryer with a housing for accommodating a heater, an electric motor for driving an impeller and a follow-up device, the housing having on one end an inlet grille for the air to be sucked in and on the other hand an outlet grille for the outlet of the heated air, outlet grilles , Outlet grille and guide device are arranged coaxially to the longitudinal axis of the manual hair dryer.
  • Such electrically operated hand hair dryers are known in various embodiments. This also applies to the outlet grille attached to the front end of the hand hair dryer housing to allow the heated air to escape.
  • the known outlet grids consist of a number of rings arranged concentrically to one another, that is to say those which have different diameters, the rings being connected to one another by a plurality of transverse webs which are arranged at a distance from one another. With the previously known Outlet grids of this type run the rings arranged concentrically to one another in the direction of the longitudinal axis of the hand hair dryer. As a result of this training, as practice shows, there is an uneven distribution of the heated air coming out of the outlet grille.
  • the object of the present invention is to further improve electrically operated hand hair dryers of the type described in the introduction, in particular in such a way that a more uniform distribution of the heated air leaving the outlet grille takes place.
  • the outlet grille should be manufactured in a simple and inexpensive manner and be able to be accommodated in the housing of the hand-held hair dryer.
  • the outlet grille consist of an outer ring and a plurality of inner rings which are connected to one another by connecting webs, at least one of which is conical, the smallest diameter of which is directed towards the outlet.
  • Tests carried out have shown that this results in a much more uniform distribution of the heated air emerging from the outlet grille in comparison with the known.
  • the conical inner ring enclose an angle of approximately 25 ° with the longitudinal axis of the hand hair dryer. Such an angle of inclination has given the best results in tests carried out.
  • the connecting webs of the outlet grille in the immediate vicinity of the outer ring have a recess for engaging the rear end of an attachable molding nozzle. If the use of such a shaping nozzle in connection with the electrically operated hand hair dryer is desired, it can be detachably connected to the housing of the hand hair dryer in a simple manner, the recesses forming a guarantee that even after the shaping nozzle is put on or after the connection the same with the housing of the hand-held hair dryer, a relative movement between the two parts remains possible.
  • the electrically operated heater generally consists of a plurality of plate-shaped or strip-shaped carriers made of an electrically insulating material.
  • the actual heating wires or heating coils are attached to the outside of the carriers, the carriers being arranged in a star shape.
  • they are also identical to one another and have the same distance from one another. So far, the webs of the guide device have been aligned with the brackets of the heater. It has thus been ensured that, seen in the longitudinal direction of the hand hair dryer, the webs of the guide device and the support of the heater lie one behind the other, namely in the axial direction.
  • Another object of the invention is to remedy this.
  • An arrangement of the follow-up device and the support in an electrically operated hand-held hair dryer of the type described at the outset is thus to be created, in which excessive temperatures cannot arise in the area of the heater, as a result of which the housing of the hand-held hair dryer is affected.
  • the webs of the guiding device are offset from the carriers to arrange the heater.
  • the tracking device forms a one-piece structural unit with a carrier for the electric motor. This can be produced in an economical manner and connected to the housing by known means.
  • the electrically operated hand hair dryer on which the exemplary embodiment is based is generally designated by 10.
  • the hand-held hair dryer 10 has a housing which, in the exemplary embodiment shown, is composed of a front housing part 11 and a rear housing part 12, the two housing parts 11 and 12 being able to be connected by means known per se.
  • an inlet grille 13 is arranged for sucking in the fresh air.
  • the inlet grille 13 can e.g. can be locked with the rear end of the housing part 12.
  • the inlet grille has a plurality of inlet openings 32 which are arranged in concentric partial rings. The webs lying between the inlet openings 32 are not designated for the sake of simplicity.
  • the electrically operated hand hair dryer 1o has an outlet grill 15, the design and shape of which can best be seen from FIGS. 4, 5 and 6 of the drawing. It follows from this that the outlet grille 15 is a one-piece plastic body which has an outer ring 34 and a plurality of inner rings 35 which run coaxially to the longitudinal axis A-A. These have different diameters and are connected to one another via connecting webs 36.
  • At least one of the inner rings 35 and, in the exemplary embodiment chosen, the middle of the three inner rings is conical.
  • the cone of this inner ring is chosen such that it encloses an angle of approximately 25 ° with the longitudinal axis A-A.
  • the smallest diameter of this cone 35 faces the outlet opening for the heated air and the largest diameter the inner parts of the hand hair dryer, which lie in the receiving space of the housing.
  • a recess 37 is provided in the connecting webs 36.
  • a space for engaging the rear end of a shaping nozzle 14 is created, which can be detachably connected to the front part 11 of the housing of the hand-held hair dryer 10 if required.
  • a releasable snap-in connection is provided for holding the shaping nozzle 14 to the housing of the hand-held hair dryer 10.
  • the interacting parts have a snap-in 38 and a counter-snap 39.
  • the recesses 37 thus leave a space for the end engaging in the housing the molding nozzle 14 created so that this - as desired - can be changed in position by turning if necessary.
  • the outlet grill 15 is inserted into the interior of the front part 11 of the housing of the hair dryer 10.
  • the rear end of the outlet grille 15 comes into operative connection with the ends of supports 17 of a heater, generally designated 16, facing it.
  • recordings are not specified on the connecting webs 36 of the outlet grille 15 provided.
  • the heater 16 has a training known per se. It consists of flat supports 17 which essentially extend in the direction of the longitudinal axis A-A of the hair dryer 10.
  • the actual heating wire or the heating coil carried by the carriers 17 is omitted in the figures of the drawing for the sake of simplicity, firstly because both the wire itself can have a known design and is also connected to the carriers 17 in a known manner.
  • the follow-up device 20 is combined with a holder 19 for an electric motor 18 to form a structural unit.
  • the webs 33 of the follow-up device 20 are directly molded onto the outer surface of the carrier 19.
  • the electric motor 18 has a design known per se and is also used in a manner known per se Drive of an impeller 22 used, which is arranged on the motor shaft 21.
  • the air sucked in through the openings 33 of the inlet grille 13 therefore first reaches the area of the impeller 22, then the area of action of the secondary guide 20 and from there finally to the heater 16. After heating, the air leaves the outlet grille 15 and possibly the front opening the shaping nozzle 14 when the latter is detachably connected to the hand hair dryer 10.
  • the hand-held hair dryer 10 has a handle 23 which is hollow and can therefore be used to accommodate control and control parts.
  • a switch 26 of a known type is accommodated in the interior of the hollow handle 23, which switch is covered on the outside by a cover panel 27.
  • the cover panel 27 - guided on the inner walls of the handle 23 - can be moved to a limited extent.
  • the cover panel 27 has a projection, not shown.
  • the switch can be switched to its on or off position by moving the cover panel.
  • a regulator wheel 28 is rotatably mounted in the cavity of the handle 23, which in certain areas passes through an opening in the wall of the handle 23 and is thus accessible to the user.
  • an anti-kink sleeve 25 is arranged with a continuous bore for accommodating one end of an electrical supply line 24, the other end of which carries a plug which can be inserted into a socket in a known manner.
  • a strain relief clamp 30 is provided in a known manner.
  • the handle 23 in a known manner also has a suspension eye 31, with the aid of which, when the hand hair dryer 10 is not in use, on a hook or the like. can be hung.
  • the embodiment shown is only one example of realizing the invention and it is not restricted to this. Rather, many other designs and applications are possible.
  • the number of inner rings present can also be increased if desired. This also applies to the number of tapered inner rings.
  • the invention can also be implemented in hand hair dryers other than those shown.

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  • Cleaning And Drying Hair (AREA)

Description

Die Erfindung bezieht sich auf einen elektrisch betriebenen Handhaartrockner mit einem Gehäuse zur Unterbringung eines Heizers, eines Elektromotors zum Antrieb eines Laufrades sowie einer Nachleiteinrichtung, wobei das Gehäuse einerends ein Einlaßgitter für die anzusaugende Luft und andernends ein Austrittsgitter zum Austritt der erwärmten Luft aufweist, wobei Enlaßgitter, Austrittsgitter und Nachleiteinrichtung koaxial zur Längsachse des Handhaartrockners angeordnet sind.The invention relates to an electrically operated hand-held hair dryer with a housing for accommodating a heater, an electric motor for driving an impeller and a follow-up device, the housing having on one end an inlet grille for the air to be sucked in and on the other hand an outlet grille for the outlet of the heated air, outlet grilles , Outlet grille and guide device are arranged coaxially to the longitudinal axis of the manual hair dryer.

Derartige elektrisch betriebene Handhaartrockner sind in verschiedenen Ausführungsformen bekannt. Dies gilt auch für das am vorderen Ende des Gehäuses des Handhaartrockners angebrachte Austrittsgitter zum Austritt der erwärmten Luft. Die bekannten Austrittsgitter bestehen aus einer Anzahl von konzentrisch zueinander angeordneten Ringen, also solchen, die unterschiedliche Durchmesser aufweisen, wobei die Ringe durch eine Mehrzahl von in Abstand voneinander angeordneten Querstegen miteinander verbunden sind. Bei den bisher bekannten Austrittsgittern dieser Art verlaufen die konzentrisch zueinander angeordneten Ringe in Richtung der Längsachse des Handhaartrockners. Durch diese Ausbildung ergibt sich - wie die Praxis zeigt - eine ungleichmäßige Verteilung der aus dem Austrittsgitter ins Freie gelangenden erwärmten Luft. Dies bedeutet, daß - wenn man die Gesamtquerschnittsfläche des Austrittsgitters betrachtet - Bereiche derselben vorhanden sind, in denen die Austrittsgeschwindigkeit höher ist als in anderen Bereichen. Ein solcher ungleichmäßiger Austritt der erwärmten Luft aus dem Austrittsgitter eines Handhaartrockners ist für die Praxis unerwünscht, da hierdurch die Behandlung des zu trocknenden Haares erschwert wird.Such electrically operated hand hair dryers are known in various embodiments. This also applies to the outlet grille attached to the front end of the hand hair dryer housing to allow the heated air to escape. The known outlet grids consist of a number of rings arranged concentrically to one another, that is to say those which have different diameters, the rings being connected to one another by a plurality of transverse webs which are arranged at a distance from one another. With the previously known Outlet grids of this type run the rings arranged concentrically to one another in the direction of the longitudinal axis of the hand hair dryer. As a result of this training, as practice shows, there is an uneven distribution of the heated air coming out of the outlet grille. This means that - if one looks at the total cross-sectional area of the outlet grating - there are areas of the same in which the exit velocity is higher than in other areas. Such an uneven exit of the heated air from the outlet grill of a hand-held hair dryer is undesirable in practice, since this makes the treatment of the hair to be dried more difficult.

Aufgabe der vorliegenden Erfindung ist es, elektrisch betriebene Handhaartrockner der eingangs näher gekennzeichneten Art weiter zu verbessern, insbesondere derart, daß eine gleichmäßigere Verteilung der das Austrittsgitter verlassenden erwärmten Luft erfolgt. Dabei soll das Austrittsgitter in einfacher und wohlfeiler Weise hergestellt und in dem Gehäuse des Handhaartrockners untergebracht werden können.The object of the present invention is to further improve electrically operated hand hair dryers of the type described in the introduction, in particular in such a way that a more uniform distribution of the heated air leaving the outlet grille takes place. The outlet grille should be manufactured in a simple and inexpensive manner and be able to be accommodated in the housing of the hand-held hair dryer.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, das Austrittsgitter aus einem Außenring und mehreren durch Verbindungsstege miteinander verbundenen Innenringen bestehen zu lassen, von denen wenigstens einer kegelig ausgebildet ist, dessen kleinster Durchmesser zum Austritt gerichtet ist. Durchgeführte Versuche haben ergeben, daß sich dadurch eine wesentlich gleichmäßigere Verteilung der aus dem Austrittsgitter austretenden erwärmten Luft im Vergleich mit dem Bekannten ergibt. Darüber hinaus ist eine Ausrichtung der austretenden erwärmten Luft in Richtung der Längsachse des Handhaartrockners festzustellen, was sich beim Gebrauch des elektrisch betriebenen Handhaartrockners vorteilhaft bemerkbar macht. Insgesamt gesehen ergeben sich somit im Vergleich mit dem Bekannten wesentlich verbesserte Eigenschaften des elektrisch betriebenen Handhaartrockners.To achieve this object, it is proposed according to the invention to let the outlet grille consist of an outer ring and a plurality of inner rings which are connected to one another by connecting webs, at least one of which is conical, the smallest diameter of which is directed towards the outlet. Tests carried out have shown that this results in a much more uniform distribution of the heated air emerging from the outlet grille in comparison with the known. In addition, there is an orientation of the exiting heated air in the direction of the longitudinal axis of the handheld hair dryer to determine what is advantageous when using the electrically operated handheld hair dryer. Overall, compared to the known, this results in significantly improved properties of the electrically operated hand-held hair dryer.

Bei der bevorzugten Ausführungsform der Erfindung ist vorgesehen, den kegeligen Innenring mit der Längsachse des Handhaartrockners einen Winkel von etwa 25° einschließen zu lassen. Ein derartiger Neigungswinkel hat bei durchgeführten Versuchen die besten Ergebnisse gebracht.In the preferred embodiment of the invention it is provided that the conical inner ring enclose an angle of approximately 25 ° with the longitudinal axis of the hand hair dryer. Such an angle of inclination has given the best results in tests carried out.

Vorteilhaft ist es, die Höhe des kegeligen Innenringes diejenige der übrigen Innenringe übersteigen zu lassen. Dadurch wird die Luft über einen verhältnismäßig langen Weg geführt und damit die Austrittsrichtung festgelegt.It is advantageous to let the height of the conical inner ring exceed that of the other inner rings. As a result, the air is guided over a relatively long distance and the direction of exit is thus determined.

Es empfiehlt sich, die Verbindungsstege des Austrittsgitters in unmittelbarer Nähe des Außenringes liegend einen Rücksprung zum Eingriff des rückwärtigen Endes einer aufsetzbaren Formdüse aufweisen zu lassen. Sofern die Benutzung einer solchen Formdüse in Verbindung mit dem elektrisch betriebenen Handhaartrockner gewünscht wird, läßt sich diese in einfacher Weise mit dem Gehäuse des Handhaartrockners lösbar verbinden, wobei die Rücksprünge eine Garantie dafür bilden, daß auch nach dem Aufsetzen der Formdüse bzw. nach dem Verbinden derselben mit dem Gehäuse des Handhaartrockners eine Relativbewegung zwischen den beiden Teilen möglich bleibt.It is advisable to have the connecting webs of the outlet grille in the immediate vicinity of the outer ring have a recess for engaging the rear end of an attachable molding nozzle. If the use of such a shaping nozzle in connection with the electrically operated hand hair dryer is desired, it can be detachably connected to the housing of the hand hair dryer in a simple manner, the recesses forming a guarantee that even after the shaping nozzle is put on or after the connection the same with the housing of the hand-held hair dryer, a relative movement between the two parts remains possible.

Bekannte elektrische Handhaartrockner haben eine Nachleiteinrichtung für die angesaugte Luft und in Strömungsrichtung gesehen dahinterliegend eine Heizung zum Erwärmen der angesaugten Luft. Die elektrisch betriebene Heizung besteht in aller Regel aus einer Mehrzahl von platten-oder streifenförmigen Trägern aus einem elektrisch isolierenden Werkstoff. Die eigentlichen Heizdrähte oder Heizwendeln sind an den Außenseiten der Träger angebracht, wobei die Träger sternförmig angeordnet sind. Sie sind ferner in aller Regel untereinander gleichgestaltet und haben gleichen Abstand voneinander. Bisher hat man die Stege der Nachleiteinrichtung mit den Trägern des Heizers fluchten lassen. Man hat somit dafür gesorgt, daß in Längsrichtung des Handhaartrockners gesehen die Stege der Nachleiteinrichtung und die Träger des Heizers hintereinanderliegen und zwar in Achsrichtung verlaufend. Auf diese Weise erreicht man, daß die Stege und die Träger der angesaugten und bewegten Luft einen geringen Widerstand entgegensetzen. Es hat sich bei durchgeführten Versuchen gezeigt, daß hierdurch im Bereich des Heizers derart hohe Temperaturen entstehen können, daß der Werkstoff des benachbarten Gehäuses in Mitleidenschaft gezogen und damit beschädigt oder sogar zerstört wird.Known electric hand hair dryers have a follow-up device for the intake air and in the direction of flow seen behind it is a heater for heating the intake air. The electrically operated heater generally consists of a plurality of plate-shaped or strip-shaped carriers made of an electrically insulating material. The actual heating wires or heating coils are attached to the outside of the carriers, the carriers being arranged in a star shape. As a rule, they are also identical to one another and have the same distance from one another. So far, the webs of the guide device have been aligned with the brackets of the heater. It has thus been ensured that, seen in the longitudinal direction of the hand hair dryer, the webs of the guide device and the support of the heater lie one behind the other, namely in the axial direction. In this way it is achieved that the webs and the carriers of the sucked-in and moving air offer little resistance. It has been shown in tests carried out that such high temperatures can arise in the area of the heater that the material of the adjacent housing is affected and is thus damaged or even destroyed.

Eine weitere Aufgabe der Erfindung besteht darin, hier Abhilfe zu schaffen. Es soll somit eine Anordnung der Nachleiteinrichtung und des Trägers bei einem elektrisch betriebenen Handhaartrockner der eingangs gekennzeichneten Art geschaffen werden, bei denen im Bereich des Heizers keine zu hohen Temperaturen entstehen können, durch welche das Gehäuse des Handhaartrockners in Mitleidenschaft gezogen wird.Another object of the invention is to remedy this. An arrangement of the follow-up device and the support in an electrically operated hand-held hair dryer of the type described at the outset is thus to be created, in which excessive temperatures cannot arise in the area of the heater, as a result of which the housing of the hand-held hair dryer is affected.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, die Stege der Nachleiteinrichtung versetzt zu den Trägern des Heizers anzuordnen. Durch diese Maßnahme wird eine gewisse Verwirbelung der angesaugten Luft erreicht, die - wie durchgeführte Versuche ergeben haben - zu einer Verringerung der Temperatur im Bereich des Heizers führt. Diese Temperaturreduzierung ist so bemessen, daß nunmehr keine Gefahr mehr für das den Heizer umgehende Gehäuse des Handhaartrockners besteht.To achieve this object, it is proposed according to the invention that the webs of the guiding device are offset from the carriers to arrange the heater. As a result of this measure, a certain turbulence of the sucked-in air is achieved which, as tests have shown, leads to a reduction in the temperature in the area of the heater. This reduction in temperature is such that there is now no longer any danger for the housing of the hand-held hair dryer which bypasses the heater.

Dabei ist es von besonderem Vorteil, daß zur Lösung der gestellten Aufgabe kein zusätzlicher Werkstoff erforderlich ist, denn die Werkstoffmengen, die zur Herstellung der Nachleiteinrichtung einerseits und der Träger des Heizers andererseits benötigt werden, sind unverändert. Geändert wird lediglich die gegenseitige Lage der Stege der Nachleiteinrichtung und der Träger des Heizers zueinander.It is particularly advantageous that no additional material is required to solve the problem, because the quantities of material that are required for the production of the tracking device on the one hand and the support of the heater on the other are unchanged. All that is changed is the mutual position of the webs of the guide device and the support of the heater relative to one another.

Dabei ist es am zweckmäßigsten, wenn die Stege der Nachleiteinrichtung in bezug auf die Träger des Heizers auf Lücke liegen. Hierdurch ergibt sich das größtmögliche Maß des Gegeneinander- Versetzens von Stegen und Träger.It is most expedient if the webs of the follow-up device are in a gap with respect to the support of the heater. This results in the greatest possible degree of offset of webs and beams.

Nach einem anderen Vorschlag der Erfindung bildet die Nachleiteinrichtung mit einem Träger für den Elektromotor eine einstückige Baueinheit. Diese kann in wirtschaftlicher Weise hergestellt und mit bekannten Mitteln mit dem Gehäuse verbunden werden.According to another proposal of the invention, the tracking device forms a one-piece structural unit with a carrier for the electric motor. This can be produced in an economical manner and connected to the housing by known means.

Auf der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt und zwar zeigen:

Fig. 1
einen Längsschnitt durch den erfindungsgemäßen elektrisch betriebenen Handhaartrockner mit einer aufgesetzten Formdüse,
Fig. 2
einen Querschnitt durch den elektrisch betriebenen Handhaartrockner nach der Fig. 1, teilweise in Ansicht,
Fig. 3
eine Rückansicht des erfindungsgemäßen Handhaartrockners nach der Fig. 1 der Zeichnung,
Fig. 4
in Draufsicht und in vergrößertem Maßstab ein Austrittsgitter für den elektrisch betriebenen Handhaartrockner nach der Fig. 1 der Zeichnung,
Fig. 5
einen Schnitt durch das Austrittsgitter entlang der Linie V-V der Fig. 4 und
Fig. 6
einen weiteren Schnitt durch das Austrittsgitter, nunmehr entlang der Linie VI-VI der Fig. 4 der Zeichnung.
The invention is shown in an exemplary embodiment in the drawing and shows:
Fig. 1
2 shows a longitudinal section through the electrically operated hand hair dryer according to the invention with an attached shaping nozzle,
Fig. 2
2 shows a cross section through the electrically operated hand hair dryer according to FIG. 1, partly in view,
Fig. 3
3 shows a rear view of the hand hair dryer according to the invention according to FIG. 1 of the drawing,
Fig. 4
in top view and on an enlarged scale an outlet grille for the electrically operated hand hair dryer according to FIG. 1 of the drawing,
Fig. 5
a section through the outlet grille along the line VV of Fig. 4 and
Fig. 6
a further section through the outlet grating, now along the line VI-VI of Fig. 4 of the drawing.

Es sei zunächst erwähnt, daß in den Figuren der Zeichnungen nur diejenigen Teile eines elektrisch betriebenen Handhaartrockners dargestellt sind, welche für das Verständnis der Erfindung Bedeutung haben. So fehlt insbesondere ein Teil der Regel- und Steuereinrichtungen. Auch ist der eigentliche Heizungskörper der Einfachheit halber nicht mit dargestellt sondern lediglich die ihn aufnehmenden Träger. Im übrigen können alle in den Zeichnungen fehlenden Teile eine bekannte Ausbildung haben und in ebenfalls an sich bekannter Weise in dem elektrisch betriebenen Handhaartrockner angeordnet sein.It should first be mentioned that only those parts of an electrically operated hand-held hair dryer are shown in the figures of the drawings which are important for understanding the invention. In particular, some of the regulating and control devices are missing. For the sake of simplicity, the actual heating element is also not shown, but only the carrier that receives it. Otherwise, all parts missing in the drawings can be a known one Have training and be arranged in a manner known per se in the electrically operated hand hair dryer.

Der dem Ausführungsbeispiel zugrundegelegte, elektrisch betriebene Handhaartrockner ist generell mit 10 bezeichnet. Der Handhaartrockner 1o hat ein Gehäuse, das im dargestellten Ausführungsbeispiel aus einem vorderen Gehäuseteil 11 und einem hinteren Gehäuseteil 12 zusammengesetzt ist, wobei die beiden Gehäuseteile 11 und 12 mit an sich bekannten Mitteln verbunden werden können. Auf die rückwärtige Öffnung des hinteren Gehäuseteiles 12 ist ein Einlaßgitter 13 zum Ansaugen der Frischluft angeordnet. Das Einlaßgitter 13 kann z.B. mit dem rückwärtigen Ende des Gehäuseteiles 12 verrastet werden. Wie am besten aus der Fig. 3 der Zeichnung ersichtlich, hat das Einlaßgitter eine Vielzahl von Einlaßöffnungen 32, die in konzentrischen Teilringen angeordnet sind. Die zwischen den Einlaßöffnungen 32 liegenden Stege sind der Einfachheit halber nicht bezeichnet.The electrically operated hand hair dryer on which the exemplary embodiment is based is generally designated by 10. The hand-held hair dryer 10 has a housing which, in the exemplary embodiment shown, is composed of a front housing part 11 and a rear housing part 12, the two housing parts 11 and 12 being able to be connected by means known per se. At the rear opening of the rear housing part 12, an inlet grille 13 is arranged for sucking in the fresh air. The inlet grille 13 can e.g. can be locked with the rear end of the housing part 12. As best seen in Fig. 3 of the drawing, the inlet grille has a plurality of inlet openings 32 which are arranged in concentric partial rings. The webs lying between the inlet openings 32 are not designated for the sake of simplicity.

Auf der gegenüberliegenden anderen Seite hat der elektrisch betriebene Handhaartrockner 1o ein Austrittsgitter 15, dessen Ausbildung und Gestalt am besten aus den Fig. 4, 5 und 6 der Zeichnung ersichtlich ist. Daraus ergibt sich, daß das Austrittsgitter 15 ein einstückiger Kunststoffkörper ist, der einen Außenring 34 und mehrere, koaxial zur Längsachse A-A verlaufende Innenringe 35 aufweist. Diese haben unterschiedliche Durchmesser und sind über Verbindungsstege 36 miteinander verbunden.On the opposite other side, the electrically operated hand hair dryer 1o has an outlet grill 15, the design and shape of which can best be seen from FIGS. 4, 5 and 6 of the drawing. It follows from this that the outlet grille 15 is a one-piece plastic body which has an outer ring 34 and a plurality of inner rings 35 which run coaxially to the longitudinal axis A-A. These have different diameters and are connected to one another via connecting webs 36.

Wie die Fig. 5 und 6 am besten erkennen lassen, ist wenigstens einer der Innenringe 35 und zwar im gewählten Ausführungsbeispiel der mitttlere der drei Innenringe kegelig ausgebildet.As can best be seen in FIGS. 5 and 6, at least one of the inner rings 35 and, in the exemplary embodiment chosen, the middle of the three inner rings is conical.

Der Kegel dieses Innenringes ist derart gewählt, daß er mit der Längsachse A-A einen Winkel von etwa 25° einschließt. Der kleinste Durchmesser dieses Kegels 35 ist dabei der Austrittsöffnung für die erwärmte Luft zugekehrt und der größte Durchmesser den Innenteilen des Handhaartrockners, welche in dem Aufnahmeraum des Gehäuses liegen.The cone of this inner ring is chosen such that it encloses an angle of approximately 25 ° with the longitudinal axis A-A. The smallest diameter of this cone 35 faces the outlet opening for the heated air and the largest diameter the inner parts of the hand hair dryer, which lie in the receiving space of the housing.

In der Nähe des Außenringes 34 des Austrittsgitters 15 ist jeweils ein Rücksprung 37 in den Verbindungsstegen 36 vorgesehen. Auf diese Weise wird ein Raum zum Eingriff des hinteren Endes einer Formdüse 14 geschaffen, die bei Bedarf mit dem vorderen Teil 11 des Gehäuses des Handhaartrockners 10 lösbar verbunden werden kann. Vorgesehen ist eine lösbare Rast-verbindung zum Festhalten der Formdüse 14 am Gehäuse des Handhaartrockners 10. Zu diesem Zwecke haben die zusammen-wirkenden Teile eine Rast 38 und eine Gegenrast 39. Durch die Rücksprünge 37 ist damit ein Freiraum für das in das Gehäuse eingreifende Ende der Formdüse 14 geschaffen, so daß diese - wie gewollt - durch Drehen bei Bedarf lageverändert werden kann.In the vicinity of the outer ring 34 of the outlet grille 15, a recess 37 is provided in the connecting webs 36. In this way, a space for engaging the rear end of a shaping nozzle 14 is created, which can be detachably connected to the front part 11 of the housing of the hand-held hair dryer 10 if required. A releasable snap-in connection is provided for holding the shaping nozzle 14 to the housing of the hand-held hair dryer 10. For this purpose, the interacting parts have a snap-in 38 and a counter-snap 39. The recesses 37 thus leave a space for the end engaging in the housing the molding nozzle 14 created so that this - as desired - can be changed in position by turning if necessary.

Aus der Fig. 1 der Zeichnung ist am besten ersichtlich, daß das Austrittsgitter 15 in den Innenraum des vorderen Teiles 11 des Gehäuses des Handhaartrockners 10 eingesetzt ist. Die nach vorn, also in Richtung der Austrittsöffnung ragende Stirnfläche des Außenringes 34 kommt dabei mit einem Anschlag 40 in Wirkverbindung, der an der Innenwand des vorderen Gehäuses 11 vorgesheen ist. Das rückwärtige Ende des Austrittsgitters 15 tritt mit ihm zugekehrten Enden von Trägern 17 eines generell mit 16 bezeichneten Heizers in Wirkverbindung. Zu diesem Zweck sind nicht näher bezeichnete Aufnahmen an den Verbindungsstegen 36 des Austrittsgitters 15 vorgesehen.From Fig. 1 of the drawing it can best be seen that the outlet grill 15 is inserted into the interior of the front part 11 of the housing of the hair dryer 10. The end face of the outer ring 34 which projects forward, that is to say in the direction of the outlet opening, comes into operative connection with a stop 40 which is provided on the inner wall of the front housing 11. The rear end of the outlet grille 15 comes into operative connection with the ends of supports 17 of a heater, generally designated 16, facing it. For this purpose, recordings are not specified on the connecting webs 36 of the outlet grille 15 provided.

Der Heizer 16 hat eine an sich bekannte Ausbildung. Er besteht aus flachen Trägern 17, die sich im wesnetlichen in Richtung der Längsachse A-A des Handhaartrockners 10 erstrecken. Der eigentliche, von den Trägern 17 getragene Heizdraht oder die Heizwendel ist in den Figuren der Zeichnung der Einfachheit halber fortgelassen, einmal weil sowohl der Draht selbst eine bekannte Ausbildung haben kann, als auch in bekannter Weise mit den Trägern 17 verbunden ist.The heater 16 has a training known per se. It consists of flat supports 17 which essentially extend in the direction of the longitudinal axis A-A of the hair dryer 10. The actual heating wire or the heating coil carried by the carriers 17 is omitted in the figures of the drawing for the sake of simplicity, firstly because both the wire itself can have a known design and is also connected to the carriers 17 in a known manner.

Neu ist dagegen die Lage der Träger 17 des Heizers 16 in bezug auf die Stege 33 einer Nachleiteinrichtung 20, die in Strömungsrichtung der zu erwärmenden Luft gesehen vor dem Heizer 16 angeordnet ist. Wie die Fig. 2 der Zeichnungen am besten erkennen läßt, sind die Träger 17 in bezug auf die Stege 33 der Nachleiteinrichtung 20 versetzt angeordnet. Sie liegen somit nicht mehr - wie bisher - unmittelbar hintereinander. Durch die versetzte Anordnung der beiden genannten Teile kommt es zu einer Verwirbelung der angesaugten Luft und dadurch bedingt zu einer Reduzierung der im Bereich des Heizers auftretenden Temperaturen. Diese werden auf ein solches Maß reduziert, daß jede nachteilige Beeinträchtigung des den Heizer umgebenden Gehäusebereiches entfällt.What is new, however, is the position of the carrier 17 of the heater 16 in relation to the webs 33 of a follow-up device 20, which is arranged in front of the heater 16 as seen in the direction of flow of the air to be heated. As can best be seen in FIG. 2 of the drawings, the carriers 17 are arranged offset with respect to the webs 33 of the follow-up device 20. As a result, they are no longer in direct succession as before. The staggered arrangement of the two parts mentioned causes the sucked-in air to swirl and thus to a reduction in the temperatures occurring in the area of the heater. These are reduced to such an extent that any disadvantageous impairment of the housing area surrounding the heater is eliminated.

Im gewählter Ausführungsbeispiel ist die Nachleiteinrichtung 20 mit einem Halter 19 für einen Elektromotor 18 zu einer Baueinheit vereinigt. Die Stege 33 der Nachleiteinrichtung 20 sind dabei der Außenfläche des Trägers 19 unmittelbar angeformt. Der Elektromotor 18 hat eine an sich bekannte Bauart und wird in ebenfalls an sich bekannter Weise zum Antrieb eines Laufrades 22 benutzt, welches auf der Motorwelle 21 angeordnet ist. Die durch die Öffnungen 33 des Eintrittsgitters 13 angesaugte Luft gelangt daher zunächst in den Bereich des Laufrades 22, danach in den Wirkungsbereich der Nachleiteinrichtung 20 und von dort schließlich zu dem Heizer 16. Nach dem Erwärmen verläßt die Luft das Austrittsgitter 15 und gegebenenfalls die vordere Öffnung der Formdüse 14, wenn letztere lösbar mit dem Handhaartrockner 10 verbunden ist.In the selected exemplary embodiment, the follow-up device 20 is combined with a holder 19 for an electric motor 18 to form a structural unit. The webs 33 of the follow-up device 20 are directly molded onto the outer surface of the carrier 19. The electric motor 18 has a design known per se and is also used in a manner known per se Drive of an impeller 22 used, which is arranged on the motor shaft 21. The air sucked in through the openings 33 of the inlet grille 13 therefore first reaches the area of the impeller 22, then the area of action of the secondary guide 20 and from there finally to the heater 16. After heating, the air leaves the outlet grille 15 and possibly the front opening the shaping nozzle 14 when the latter is detachably connected to the hand hair dryer 10.

Wie die Fig. 1 der Zeichnung am besten erkennen läßt, weist der Handhaartrockner 10 einen Handgriff 23 auf, der hohl ausgebildet ist und daher zur Unterbringung von Regelund Steuerteilen benutzt werden kann. Im dargestellten Aus-führungs-beispiel ist im Inneren des hohlen Handgriffes 23 ein Schalter 26 bekannter Bauart untergebracht, der nach außen hin durch eine Abdeckblende 27 verdeckt ist. Die Abdeckblende 27 ist - geführt an den Innenwandungen des Handgriffes 23 - begrenzt verschiebbar. Zur Erleichterung des Verschiebens hat die Abdeckblende 27 einen nicht näher bezeichneten Vorsprung. Durch Verschieben der Abdeckblende kann der Schalter in seine Ein- oder Ausschaltstellung überführt werden. Oberhalb des Schalters 26 ist in dem Hohlraum des Handgriffes 23 noch ein Reglerrad 28 drehbar gelagert, das bereichsweise durch eine Öffnung der Wandung des Handgriffes 23 nach außen tritt und damit für den Benutzer zugänglich wird.As can best be seen from FIG. 1 of the drawing, the hand-held hair dryer 10 has a handle 23 which is hollow and can therefore be used to accommodate control and control parts. In the illustrated exemplary embodiment, a switch 26 of a known type is accommodated in the interior of the hollow handle 23, which switch is covered on the outside by a cover panel 27. The cover panel 27 - guided on the inner walls of the handle 23 - can be moved to a limited extent. To facilitate displacement, the cover panel 27 has a projection, not shown. The switch can be switched to its on or off position by moving the cover panel. Above the switch 26, a regulator wheel 28 is rotatably mounted in the cavity of the handle 23, which in certain areas passes through an opening in the wall of the handle 23 and is thus accessible to the user.

Im Bereich der Stirnfläche des Handgriffes 23 ist eine Knickschutztülle 25 angeordnet mit einer durchlaufenden Bohrung zur Unterbringung des einen Endes einer elektrischen Zuleitung 24, deren anderes Ende einen Stecker trägt, der in bekannter Weise in eine Steckdose eingebracht werden kann. Um dabei das in den hohlen Innenraum des Handgriffes 23 angeführte Ende der elektrischen Zuleitung 24 von Zugkräften zu entlasten, ist in bekannter Weise eine Zugentlastungsschelle 30 vorgesehen. Darüber hinaus weist der Handgriff 23 in ebenfalls bekannter Weise eine Aufhängöse 31 auf, mit deren Hilfe bei Nichtbenutzung der Handhaartrockner 10 an einem Haken od.dgl. aufgehängt werden kann.In the area of the end face of the handle 23, an anti-kink sleeve 25 is arranged with a continuous bore for accommodating one end of an electrical supply line 24, the other end of which carries a plug which can be inserted into a socket in a known manner. In order to relieve the end of the electrical supply line 24 which is introduced into the hollow interior of the handle 23 from tensile forces, a strain relief clamp 30 is provided in a known manner. In addition, the handle 23 in a known manner also has a suspension eye 31, with the aid of which, when the hand hair dryer 10 is not in use, on a hook or the like. can be hung.

Wie bereits erwähnt, ist die dargestellte Ausführung nur eine beispielsweise Verwirklichung der Erfindung und diese nicht darauf beschränkt. Vielmehr sind noch mancherlei andere Ausführungen und Anwendungen möglich. Dies gilt insbesondere für den Neigungswinkel des kegeligen Innenringes 35 in bezug auf die Längsachse A-A des Handhaartrockners 10. Auch kann gewünschtenfalls die Anzahl der vorhandenen Innenringe vergrößert werden. Dies gilt auch für die Anzahl der kegelig ausgebildeten Innenringe. Ferner ist es möglich, die gegenseitige Lage der Stege 33 der Nachleiteinrichtung 20 gegenüber den Trägers 17 des Heizers 16 im Vergleich mit der gewählten Darstellung zu verändern. Sofern die Anzahl der Stege 33 übereinstimmt mit der Anzahl der Träger 17 des Heizers 16, ist es zweckmäßig, die Stege 33 und die Träger 17 auf Lücke zu setzen. Und schließlich kann die Erfindung auch bei anderen als den dargestellten Handhaartrocknern verwirklicht werden.As already mentioned, the embodiment shown is only one example of realizing the invention and it is not restricted to this. Rather, many other designs and applications are possible. This applies in particular to the angle of inclination of the conical inner ring 35 with respect to the longitudinal axis A-A of the hand-held hair dryer 10. The number of inner rings present can also be increased if desired. This also applies to the number of tapered inner rings. Furthermore, it is possible to change the mutual position of the webs 33 of the follow-up device 20 relative to the carrier 17 of the heater 16 in comparison with the selected representation. If the number of webs 33 corresponds to the number of supports 17 of the heater 16, it is expedient to set the webs 33 and the supports 17 to a gap. And finally, the invention can also be implemented in hand hair dryers other than those shown.

Claims (7)

  1. An electrically operate hand hair drier (10) comprising a housing (11, 12) for accommodating a heater (16), an electric motor (18) for driving an impeller (22) and a diffuser (20), wherein the housing has at one end an inlet grill (13) for the air to be sucked in and at the other end a discharge grill (15) for discharge of the heated air, wherein the inlet grill (13), the discharge grill (15) and the diffuser (20) are arranged coaxially with respect to the longitudinal axis (A-A) of the hand hair drier (10), characterised in that the discharge grill ( 15 ) comprises an outer ring ( 34) and a plurality of inner rings (35) which are connected together by connecting limbs (36) and of which at least one is of a conical configuration, with the smallest diameter thereof being directed towards the discharge.
  2. A hand hair drier according to claim 1 characterised in that the conical inner ring (34) includes an angle of about 25° with the longitudinal axis (A-A) of the hand hair drier.
  3. A hand hair drier according to claim 1 and claim 2 characterised in that the height of the conical inner ring (35) exceeds that of the other inner rings (35).
  4. A hand hair drier according to one or more of the preceding claims characterised in that in the immediate vicinity of the outer ring the connecting limbs (36) have a set-back portion (37) for engagement of the rearward end of the shaping nozzle (14) which is adapted to be fitted thereon.
  5. A hand hair drier according to claim 1 characterised in that the limbs (33) of the diffuser (20) are arranged in displaced relationship with the supports (17) of the heater (16).
  6. A hand hair drier according to claim 5 characterised in that the limbs (33) of the diffuser (20) are aligned with gaps in relation to the supports (17) of the heater (16).
  7. A hand hair drier according to claim 5 and claim 6 characterised in that the diffuser (20) forms an integral structural unit with a support (19) for the electric motor (18).
EP88102911A 1987-03-20 1988-02-26 Hand-held electric hair-dryer Expired - Lifetime EP0289727B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8704225U 1987-03-20
DE8704225U DE8704225U1 (en) 1987-03-20 1987-03-20

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EP0289727A2 EP0289727A2 (en) 1988-11-09
EP0289727A3 EP0289727A3 (en) 1989-01-11
EP0289727B1 true EP0289727B1 (en) 1991-07-03

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EP88102911A Expired - Lifetime EP0289727B1 (en) 1987-03-20 1988-02-26 Hand-held electric hair-dryer

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EP (1) EP0289727B1 (en)
DE (1) DE8704225U1 (en)

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DE3927913A1 (en) * 1989-08-24 1991-02-28 Petz Elektro Waerme Techn ELECTRIC HAIR DRYER
GB2283170A (en) * 1993-10-29 1995-05-03 Otto Wu Hair dryer handle
DE19635933B4 (en) * 1996-09-05 2007-11-29 Braun Gmbh Hair care device
GB9902730D0 (en) * 1999-02-09 1999-03-31 Gkn Westland Helicopters Ltd Device for applying heat to an adhesive
US6216363B1 (en) 2000-01-31 2001-04-17 Sara Swansen Drying apparatus and method of preventing diaper dermatitis
US20040216322A1 (en) * 2001-12-06 2004-11-04 Nicholas Collier Hairdryer
FR2907642B1 (en) * 2006-10-31 2009-01-23 Seb Sa HAIR DRYER COMPRISING A DISMANTABLE GRID
US20090100698A1 (en) * 2007-10-22 2009-04-23 Elizabeth Primm Diffuser for hair dryer
US8480724B2 (en) 2009-05-06 2013-07-09 Deborah C Bly Assembly and method for treating and preventing moisture related skin dermatitis
KR101906844B1 (en) 2015-07-24 2018-10-11 코닌클리케 필립스 엔.브이. Hair care device
US10485320B2 (en) * 2016-08-19 2019-11-26 Shih-Ling Hsu Hair dryer
CN213604937U (en) * 2020-10-30 2021-07-06 北京思维索罗科技有限公司 Electric hair drier air duct structure and electric hair drier
US20220217942A1 (en) * 2021-01-14 2022-07-14 Douglas McClain Drying and Brushing Apparatus and Method

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US1764462A (en) * 1929-07-01 1930-06-17 Donald C Mosier Hair drier
US3943329A (en) * 1974-05-17 1976-03-09 Clairol Incorporated Hair dryer with safety guard air outlet nozzle
DE2708581A1 (en) * 1977-02-28 1978-08-17 Braun Ag TUBULAR HAIR DRYER
DE2930381A1 (en) * 1979-07-26 1981-02-19 Euras Elekt Forsch & Prod Hair dryer air inlet grille - consists of single plastic piece, with inner and outer grilles
US4366368A (en) * 1979-12-06 1982-12-28 Stephens Iii William S Electric heater-blower apparatus for removing frost and snow from vehicle windows
GB2090480A (en) * 1980-12-31 1982-07-07 Fcf Ltd Cooling electric motors in hairdryers
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US4647757A (en) * 1985-04-30 1987-03-03 Clairol Incorporated Hair dryer heater section providing uniform outlet air temperature distribution

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EP0289727A3 (en) 1989-01-11
EP0289727A2 (en) 1988-11-09
DE8704225U1 (en) 1987-05-14
US4924602A (en) 1990-05-15

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