EP0462027A1 - Autonomous electrical hair-dryer - Google Patents

Autonomous electrical hair-dryer Download PDF

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Publication number
EP0462027A1
EP0462027A1 EP91420179A EP91420179A EP0462027A1 EP 0462027 A1 EP0462027 A1 EP 0462027A1 EP 91420179 A EP91420179 A EP 91420179A EP 91420179 A EP91420179 A EP 91420179A EP 0462027 A1 EP0462027 A1 EP 0462027A1
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EP
European Patent Office
Prior art keywords
hair dryer
base
circuit
electric
electrical
Prior art date
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Granted
Application number
EP91420179A
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German (de)
French (fr)
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EP0462027B1 (en
Inventor
Michel Poumey
Christian Latorre
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Cableco
Beaba SAS
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Cableco
Beaba SAS
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Publication of EP0462027A1 publication Critical patent/EP0462027A1/en
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    • 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
    • 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
    • A45D2020/126—Stands therefor
    • A45D2020/128—Stands therefor involving features of the hand-held hair dryer

Definitions

  • the invention relates to a stand-alone electric hair dryer.
  • autonomous hair dryer is meant a hair dryer devoid of a mains power cord, and nevertheless capable of generating a directed flow of hot air.
  • Hair dryers have also been proposed, in which the thermal source is conventionally constituted by electrical resistances, and the supply of which is ensured by means of rechargeable batteries when the hair dryer is positioned on a base, itself connected to the power supply (see for example DE-A-3 429 319).
  • This type of device proves to be of very limited use in time, given the very rapid exhaustion of the charge of the accumulators to supply said electrical resistances.
  • the invention aims to overcome these various drawbacks. It offers a hair dryer using thermal storage as a heat source, and electrical storage by means of rechargeable batteries for activating a fan capable of generating the air flow.
  • the invention proposes a hair dryer of such design, that the accumulation of heat is carried out only during the periods of non-use of said hair dryer, the delivery of the calorific energy thus stored no longer requiring more than a traditional means, typically a fan, which consumes little energy, and therefore does not involve high capacity accumulators, and therefore not bulky.
  • the heating of the heat-transfer material is only carried out when the secondary electrical circuit is electrically supplied, that is to say when the hair dryer is built into its base.
  • the storage tank and heat exchanger comprises fins extending radially therefrom, and adapted to optimize the heat exchange between the ambient air blown by the fan and said source. heat.
  • the secondary electrical circuit also includes a thermostat, the probe of which is located on the storage tank and heat exchanger, intended to control the temperature of the heat-transfer material when said material is heating, that is to say when the hair dryer is in place on its base.
  • the base is generally circular in shape, the cross section of which is U-shaped, the base of which receives the inductor of the primary electrical circuit, and comes into contact with the rear face of the hair dryer itself when the latter is embedded on pedestal.
  • Figure 1 is a longitudinal section of the hair dryer itself, also called a gun, according to the invention.
  • Figure 2 is a schematic representation of the secondary electrical circuit.
  • Figure 3 is a schematic representation of the hair dryer in place on its base.
  • Figure 4 is a schematic cross section of the base.
  • the hair dryer consists of two elements, namely respectively the base (1) connected to the power supply sector by a socket (2), and the hair dryer proper (3), also known as a "gun". It comes to fit in period of non-use in the base (1), the latter being of suitable shape.
  • the base is circular and has a U-shaped cross section whose base (8) receives the rear face (4) of the hair dryer (3).
  • the base has a primary electrical circuit, basically consisting of a high frequency energy generator (5), connected to a printed circuit (6), the latter being itself supplied electrically by the sector through the socket (2) and without transformer.
  • the generators of high frequency energy being widespread, the generator (5) will not be described further.
  • it delivers an alternating current at high frequency in an inductor winding (7), of circular shape, forming with a capacitor incorporated in the generator (5) an oscillating circuit, of series or parallel type.
  • the operating frequency of this assembly corresponds to the resonant frequency of the oscillating circuit.
  • the frequency used is of the order of a few tens of kilo Hertz (kHz).
  • the efficiency of the generator thus designed is of very good quality, greater than 90%, which limits the heating inside the base.
  • plastic for example acryl butyl styrene (ABS), or even polycarbonate, without any opening, which gives it great security from the point of view of electrical insulation.
  • ABS acryl butyl styrene
  • the inductor winding (7) does not have many turns, unlike a transformer operating at the mains frequency, the electrical insulation between the turns can be greater without significantly increasing the size of the inductor, thus avoiding the possibility of a short circuit between the turns and therefore the risk of fire.
  • the induction winding (7) is located just below the base (8) of the U constituting the base (1).
  • the high frequency current which circulates in the field winding (7) creates, in known manner, a variable electromagnetic field of the same frequency, which crosses, without absorption, the plastic walls of the base and in particular the wall which is immediately adjacent to it and corresponding to the base (8) of the U.
  • the gun or hair dryer proper (3) is also made of plastic, such as ABS or polycarbonate. Basically, it includes an accumulator tank and heat exchanger (9) containing a heat transfer material. The reservoir (9) also receives inside one or more electrical resistances (10). The heat transfer material can be liquid or solid at room temperature. The electric resistors (10) bring this material, during the recharging period, that is to say of non-use, to a maximum temperature, controlled by means of a thermostat (11), the probe of which is situated against the tank ( 9). Typically, the maximum temperature is close to 100 ° C.
  • the heating process generates either a simple rise in temperature of said material, the latter remaining in the physical phase in which it is found, or a change of state. phase by absorption of the latent energy of change of state.
  • the heat is returned by the heat-transfer material, either the heat corresponding to the cooling of the material is used in the context of phase conservation, or the cooling of the two successive phases is used on the one hand of the material and on the other hand, the latent heat of the change of state, such as the gas-liquid or liquid-solid passage.
  • the change of state allows, for the same volume of tank, to accumulate more heat and therefore, to restore more when the need arises.
  • the size of the tank (9) can in fact be reduced.
  • the reservoir (9) acts as a heat exchanger during the use phase of the gun (3).
  • it is made of a heat-conductive metal, for example aluminum, and comprises at its periphery, for better heat exchange, the cooling fins (12), extending radially from the tank. , thereby increasing the exchange surface with the forced air as will be described later.
  • the internal volume of the reservoir (9) is close to 70 to 100 milliliters, and this for a hair dryer more specifically intended for babies and young children.
  • the gun (3) further comprises a motor (13) actuating a fan (14).
  • a motor (13) actuating a fan (14).
  • this is intended to suck the ambient air external to the gun (3) and this, by means of openings made at its rear face (15), and to pulsate this air towards the reservoir. (9), the air being thus forced between the external casing of the pistol produced as already said in plastic material and the reservoir (9), making it possible to ensure a heat exchange between the air and the latter, in order to generate a flow of hot air emerging from the front face (16) of the gun (3).
  • the motor (13) is activated electrically by means of rechargeable batteries (17) arranged in the handle of the pistol (3).
  • the engine (13) is started by simply pressing a push button (18) formed at the level of the front face of the pistol handle (3).
  • FIG. 2 shows a summary electrical diagram corresponding to the secondary electrical circuit of the gun (3).
  • this circuit comprises a sensor or armature winding (19) of circular shape, arranged in parallel and in the immediate vicinity of the rear face (15) of the gun (3).
  • This sensor winding (19) is of the same nature as that of the base (1). It is mounted in parallel with a capacitor C so as to form a plug circuit or oscillating circuit, the resonance frequency of which is slightly higher than that of the operation of the circuit.
  • This circuit constitutes an alternating voltage source, of frequency equal to that of the generator circuit, and operates according to the principle of electromagnetic induction: the electromagnetic field emitted by the inductor (7) is sensed remotely by the armature (19 ) and transforms this field into an electromotive force.
  • the distance between the inductor (7) and the armature (19) can reach a few centimeters, which gives a relatively large isolation between the primary generator circuit contained in the base (1) and the secondary plug circuit contained in the gun (3). Consequently, there is no electrical contact between these two circuits.
  • the secondary electrical circuit firstly supplies the electrical resistances (10) in parallel which are used to heat the heat transfer material contained in the closed tank (9) during periods of non-use.
  • the battery supplies via a diode (20) the battery (17) supplying the motor (13) of the fan (14), with a view to recharging it.
  • the battery charges during periods of non-use.
  • the gun (3) When not in use, the gun (3) rests on the base (1) and more precisely, rests via its rear face (15) located in the vicinity of the upper face (8) of the base (1).
  • the inductor (7) and the armature (19) are parallel to each other.
  • the inductor (7) and the armature (19) are located at a distance of one to two centimeters.
  • the base being connected to the power supply sector, there is therefore generation of an electromagnetic field causing on the one hand, the charging of the battery (17), and on the other hand, the heating of the heat transfer material contained in the closed tank (9).
  • the thermostat whatever the duration of the period of non-use, there is no risk of inadvertent heating of the heat transfer material.
  • the diode (20) once the battery (17) is recharged, there is no risk of it being discharged in the secondary electrical circuit.
  • the gun (3) When in use, the gun (3) is no longer embedded in the base (1), and the user actuates a switch (18) intended to start the ventilator (14), pulsating ambient air in contact with the reservoir (9), in order to generate a flow of hot air at the level of the anterior face (16).
  • the power absorbed by the base when the gun is no longer embedded therein is zero, given that the primary circuit includes a member for detecting the amplitude of the oscillations at the level of the inductor (7), suitable for opening the primary circuit.
  • the heat accumulated during the recharging period lasting for example two hours can thus be entirely restored in ten minutes of operation.
  • This result has the advantage of having a device of power absorbed on the sector ten times lower than the instantaneous power restored.
  • a hair dryer with a heating power of 500 Watts (W) will only absorb about 50 Watts during the recharging period. This minimizes the generator components contained in the base, correspondingly reducing the cost price of such a device.
  • the use of the hair dryer gun is simple and is carried out in complete safety since stopping the fan instantly stops the emission of hot air, without risk of overheating inside the gun since the electrical resistances do not are more supplied when the gun is no longer embedded in the base.
  • this hairdryer is very handy due to the absence of an electric power cord, and also without any danger for the user, even in the event of water penetration.

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  • Cleaning And Drying Hair (AREA)

Abstract

Autonomous electrical hair-dryer consisting of a base (1) connected to the electric mains and of an actual portable hair-dryer (3) which can be fitted into the said base (1), characterised in that the actual hair-dryer (3) comprises:   - a heat reserve (9), the heating of which takes place outside the periods of use when the hair-dryer (3) is positioned on its base (1),   - an electrical energy storage battery (accumulator) (17), recharged from the base (1) when the hair-dryer (3) is positioned on its base (1) by means of an electrical circuit integrated into the said hair-dryer, this energy being used during operation only for discharge of the thermal energy stored in the heat reserve (9) outside the said hair-dryer. <IMAGE>

Description

L'invention concerne un sèche-cheveux électrique autonome. Par "sèche-cheveux autonome", on entend un sèche-cheveux dépourvu de cordon d'alimentation au secteur, et susceptible néanmoins de générer un flux d'air chaud dirigé.The invention relates to a stand-alone electric hair dryer. By "autonomous hair dryer" is meant a hair dryer devoid of a mains power cord, and nevertheless capable of generating a directed flow of hot air.

L'utilisation d'appareils électriques, notamment ménagers, sans fil d'alimentation au secteur, est connue depuis quelques temps déjà et tend à s'amplifier chaque jour davantage compte tenu de son aspect pratique. Toutefois, cette utilisation est généralement limitée au fonctionnement occasionnel de quelques appareils munis d'un moteur électrique, tels que aspirateurs de tables, ventilateurs, mixeurs, tourne-vis électriques, etc. . Ces appareils sont généralement munis d'une batterie électrique, rechargeable ou non, dont la capacité, sous un encombrement acceptable, est suffisante pour assurer leur utilisation intermittente correspondante. Dans le cadre de batteries rechargeables, ces appareils sont munis d'un socle relié au secteur d'alimentation électrique et présentent des contacts électriques, destinés à coopérer avec des contacts électriques correspondants ménagés sur l'appareil proprement dit.The use of electrical devices, in particular household appliances, without mains power supply, has been known for some time now and tends to increase every day given its practicality. However, this use is generally limited to the occasional operation of a few devices fitted with an electric motor, such as table vacuum cleaners, fans, mixers, electric screwdrivers, etc. . These devices are generally provided with an electric battery, rechargeable or not, the capacity of which, in an acceptable size, is sufficient to ensure their corresponding intermittent use. In the context of rechargeable batteries, these devices are provided with a base connected to the power supply sector and have electrical contacts, intended to cooperate with corresponding electrical contacts provided on the device itself.

Si certes, ces appareils fonctionnent correctement dans le cadre de leur application, en revanche, ils présentent le double inconvénient, lorsque la puissance requise de l'appareil augmente, d'une part de nécessiter des batteries électriques de grandes dimensions, augmentant ainsi le poids et l'encombrement, et d'autre part des contacts électriques de bonne qualité et durables dans le temps.If, of course, these devices function correctly within the framework of their application, on the other hand, they have the double disadvantage, when the required power of the device increases, on the one hand of requiring large electric batteries, thus increasing the weight and space, and on the other hand good quality electrical contacts which are durable over time.

Dans le cadre particulier des sèche-cheveux autonomes, on a proposé des appareils dans lesquels la source thermique était assurée soit par catalyse, soit au moyen de brûleurs à gaz. Dans ce cas, la source électrique n'alimente plus que le ventilateur destiné à pulser l'air sur la source thermique, en vue de créer le flux d'air chaud en sortie du sèche-cheveux. Toutefois, ce type de sèche-cheveux présente l'inconvénient de nécessiter un remplacement périodique des cartouches, et en outre l'adjonction de dispositifs piézo-électriques ou équivalents, aptes à assurer l'allumage du gaz. Par ailleurs, ils ne sont pas sans danger en cas de chute, compte tenu du risque de fuite du gaz, et de sa combustion instantanée. On a également proposé des sèche-cheveux, dans lesquels la source thermique est classiquement constituée par des résistances électriques, et dont l'alimentation est assurée par le biais d'accumulateurs rechargeables lorsque le sèche-cheveux est positionné sur un socle, lui-même raccordé au secteur d'alimentation électrique (voir par exemple DE-A-3 429 319). Ce type d'appareil s'avère d'utilisation très limitée dans le temps, compte tenu de l'épuisement très rapide de la charge des accumulateurs pour alimenter lesdites résistances électriques.In the particular context of autonomous hair dryers, devices have been proposed in which the heat source was provided either by catalysis or by means of gas burners. In this case, the electrical source no longer powers the fan intended to pulsate the air on the thermal source, in order to create the flow of hot air at the outlet of the hair dryer. However, this type of hair dryer has the disadvantage of requiring periodic replacement of the cartridges, and in addition the addition of piezoelectric devices or equivalent, capable of ensuring the ignition of the gas. In addition, they are not without danger in the event of a fall, given the risk of gas leakage and its instantaneous combustion. Hair dryers have also been proposed, in which the thermal source is conventionally constituted by electrical resistances, and the supply of which is ensured by means of rechargeable batteries when the hair dryer is positioned on a base, itself connected to the power supply (see for example DE-A-3 429 319). This type of device proves to be of very limited use in time, given the very rapid exhaustion of the charge of the accumulators to supply said electrical resistances.

L'invention vise à pallier ces différents inconvénients. Elle propose un sèche-cheveux utilisant le stockage thermique comme source thermique, et un stockage électrique au moyen de batteries rechargeables pour l'activation d'un ventilateur apte à générer le flux d'air.The invention aims to overcome these various drawbacks. It offers a hair dryer using thermal storage as a heat source, and electrical storage by means of rechargeable batteries for activating a fan capable of generating the air flow.

Elle propose donc un sèche-cheveux électrique autonome constitué d'un socle raccordé par une prise au secteur d'alimentation électrique et d'un sèche-cheveux portable proprement dit, encastrable dans ledit socle, caractérisé en ce que le sèche-cheveux proprement dit comprend :

  • une réserve thermique dont le chauffage est réalisé en dehors des périodes d'utilisation lorsqu'il est positionné sur son socle,
  • un accumulateur d'énergie électrique, rechargé lorsque le sèche-cheveux est positionné sur son socle, cette énergie électrique n'étant utilisée en cours de fonctionnement que pour l'évacuation vers la face antérieure dudit sèche-cheveux de l'énergie calorifique emmagazinée dans la réserve thermique.
It therefore offers a stand-alone electric hair dryer consisting of a base connected by a plug to the power supply sector and of a portable hair dryer proper, which can be built into said base, characterized in that the hair dryer itself includes:
  • a thermal reserve, the heating of which is carried out outside the periods of use when it is positioned on its base,
  • an electric energy accumulator, recharged when the hair dryer is positioned on its base, this electric energy being used during operation only for the evacuation towards the anterior face of said hair dryer of the calorific energy stored in the thermal reserve.

En d'autres termes, l'invention propose un sèche-cheveux de conception telle, que l'accumulation de chaleur n'est réalisée que pendant les périodes de non-utilisation dudit sèche-cheveux, la délivrance de l'energie calorifique ainsi emmagasinée ne nécessitant plus qu'un moyen traditionnel, typiquement un ventilateur, peu gourmand en énergie, et n'impliquant donc pas d'accumulateurs de forte capacité, et par conséquent peu encombrants.In other words, the invention proposes a hair dryer of such design, that the accumulation of heat is carried out only during the periods of non-use of said hair dryer, the delivery of the calorific energy thus stored no longer requiring more than a traditional means, typically a fan, which consumes little energy, and therefore does not involve high capacity accumulators, and therefore not bulky.

Selon l'invention, le socle comporte un circuit électrique dit "primaire", générateur d'énergie haute fréquence dans un inducteur ménagé au niveau de l'une de ses faces, destinée à venir en regard de la face postérieure du sèche-cheveux proprement dit lorsque ce dernier est encastré dans ledit socle, le sèche-cheveux proprement dit comprenant :

  • . un circuit électrique secondaire, alimenté en énergie électrique par induction électro-magnétique par le circuit électrique primaire du socle lorsque le sèche-cheveux est encastré dans ce dernier, ledit circuit secondaire comprenant un bobinage induit ménagé au niveau de la face postérieure du sèche-cheveux, monté en parallèle avec un condensateur afin de former un circuit oscillant bouchon de fréquence de résonance légèrement supérieure à la fréquence de résonance du circuit primaire, le circuit secondaire alimentant en énergie électrique une ou plusieurs résistances électriques, et comportant en outre en parallèle un accumulateur muni d'un redresseur de courant, destiné à alimenter en énergie électrique un moteur ;
  • . un réservoir clos accumulateur et échangeur de chaleur contenant un matériau caloporteur chauffé au moyen desdites résistances électriques ;
  • . et un ventilateur, activé par ledit moteur électrique, et destiné à pulser de l'air ambiant sur ledit réservoir accumulateur et échangeur de chaleur en vue de générer un flux d'air chaud, par échange thermique entre l'air ambiant et ledit réservoir.
According to the invention, the base comprises a so-called "primary" electrical circuit, generator of high frequency energy in an inductor formed at one of its faces, intended to come opposite the rear face of the hair dryer properly said when the latter is embedded in said base, the hair dryer proper comprising:
  • . a secondary electrical circuit, supplied with electrical energy by electromagnetic induction by the primary electrical circuit of the base when the hair dryer is embedded in the latter, said secondary circuit comprising an induced winding formed at the rear face of the hair dryer , mounted in parallel with a capacitor to form a slightly resonant frequency plug oscillation circuit higher than the resonance frequency of the primary circuit, the secondary circuit supplying electrical energy to one or more electrical resistors, and further comprising in parallel an accumulator provided with a current rectifier, intended to supply electrical energy to a motor;
  • . a closed storage tank and heat exchanger containing a heat transfer material heated by means of said electrical resistances;
  • . and a fan, activated by said electric motor, and intended to pulsate ambient air on said storage tank and heat exchanger in order to generate a flow of hot air, by heat exchange between the ambient air and said tank.

Selon une caractéristique essentielle de l'invention, le chauffage du matériau caloporteur n'est réalisé que lorsque le circuit électrique secondaire est alimenté électriquement, c'est-à-dire lorsque le sèche-cheveux est encastré sur son socle.According to an essential characteristic of the invention, the heating of the heat-transfer material is only carried out when the secondary electrical circuit is electrically supplied, that is to say when the hair dryer is built into its base.

Selon une autre caractéristique de l'invention, le réservoir accumulateur et échangeur de chaleur comporte des ailettes s'étendant radialement à partir de celui-ci, et propres à optimiser l'échange thermique entre l'air ambiant pulsé par le ventilateur et ladite source de chaleur.According to another characteristic of the invention, the storage tank and heat exchanger comprises fins extending radially therefrom, and adapted to optimize the heat exchange between the ambient air blown by the fan and said source. heat.

Le circuit électrique secondaire comporte en outre un thermostat, dont la sonde est située sur le réservoir accumulateur et échangeur de chaleur, destiné à contrôler la température du matériau caloporteur lorsque ledit matériau est en chauffe, c'est à dire lorsque le sèche-cheveux est en place sur son socle.The secondary electrical circuit also includes a thermostat, the probe of which is located on the storage tank and heat exchanger, intended to control the temperature of the heat-transfer material when said material is heating, that is to say when the hair dryer is in place on its base.

Le socle est de forme généralement circulaire, dont la section transversale est en forme de U, dont la base reçoit l'inducteur du circuit électrique primaire, et vient en contact avec la face postérieure du sèche-cheveux proprement dit lorsque ce dernier est encastré sur le socle.The base is generally circular in shape, the cross section of which is U-shaped, the base of which receives the inductor of the primary electrical circuit, and comes into contact with the rear face of the hair dryer itself when the latter is embedded on pedestal.

La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation, donné ci-après à titre indicatif et non limitatif, à l'appui des figures annexées.The manner in which the invention can be implemented and the advantages which result therefrom will emerge more clearly from the exemplary embodiment, given below by way of indication and not limitation, in support of the appended figures.

La figure 1 est une coupe longitudinale du sèche-cheveux proprement dit , également dénommé pistolet, conforme à l'invention.Figure 1 is a longitudinal section of the hair dryer itself, also called a gun, according to the invention.

La figure 2 est une représentation schématique du circuit électrique secondaire.Figure 2 is a schematic representation of the secondary electrical circuit.

La figure 3 est une représentation schématique du sèche-cheveux en place sur son socle.Figure 3 is a schematic representation of the hair dryer in place on its base.

La figure 4 est une coupe transversale schématique du socle.Figure 4 is a schematic cross section of the base.

Selon l'invention, et comme on peut le voir sur la figure 3, le sèche-cheveux est constitué de deux éléments, à savoir respectivement le socle (1) relié au secteur d'alimentation électrique par une prise (2), et le sèche-cheveux proprement dit (3), également dénommé "pistolet". Celui-ci vient s'encastrer en période de non utilisation dans le socle (1), ce dernier étant de forme appropriée. Typiquement, le socle est circulaire et présente une section transversale en U dont la base (8) reçoit la face postérieure (4) du sèche-cheveux (3).According to the invention, and as can be seen in FIG. 3, the hair dryer consists of two elements, namely respectively the base (1) connected to the power supply sector by a socket (2), and the hair dryer proper (3), also known as a "gun". It comes to fit in period of non-use in the base (1), the latter being of suitable shape. Typically, the base is circular and has a U-shaped cross section whose base (8) receives the rear face (4) of the hair dryer (3).

Comme on l'a représenté sur la figure 4, le socle comporte un circuit électrique primaire, constitué fondamentalement d'un générateur d'énergie haute fréquence (5), connecté à un circuit imprimé (6), ce dernier étant lui-même alimenté électriquement par le secteur par le biais de la prise (2) et ce, sans transformateur. Les générateurs d'énergie haute fréquence étant largement répandus, le générateur (5) ne sera pas décrit davantage. De manière connue, il débite un courant alternatif à haute fréquence dans un bobinage inducteur (7), de forme circulaire, formant avec un condensateur incorporé dans le générateur (5) un circuit oscillant, de type série ou parallèle. La fréquence de fonctionnement de cet ensemble correspond à la fréquence de résonance du circuit oscillant. Typiquement, la fréquence utilisée est de l'ordre de quelques dizaines de kilo Hertz (kHz). Le rendement du générateur ainsi conçu est de très bonne qualité, supérieure à 90 %, ce qui limite l'échauffement à l'intérieur du socle. De la sorte, celui-ci peut être avantageusement réalisé en plastique, par exemple en acryl butyle styrène (ABS), voire en polycarbonate et ce, sans aucune ouverture, ce qui lui confère une grande sécurité du point de vue isolation électrique. En outre, le bobinage inducteur (7) ne comportant pas beaucoup de spires, contrairement à un transformateur fonctionnant à la fréquence du secteur, l'isolement électrique entre les spires peut être supérieur sans augmenter sensiblement l'encombrement de l'inducteur, évitant ainsi les possibilités de court-circuit entre les spires et donc les risques d'incendie.As shown in Figure 4, the base has a primary electrical circuit, basically consisting of a high frequency energy generator (5), connected to a printed circuit (6), the latter being itself supplied electrically by the sector through the socket (2) and without transformer. The generators of high frequency energy being widespread, the generator (5) will not be described further. In known manner, it delivers an alternating current at high frequency in an inductor winding (7), of circular shape, forming with a capacitor incorporated in the generator (5) an oscillating circuit, of series or parallel type. The operating frequency of this assembly corresponds to the resonant frequency of the oscillating circuit. Typically, the frequency used is of the order of a few tens of kilo Hertz (kHz). The efficiency of the generator thus designed is of very good quality, greater than 90%, which limits the heating inside the base. In this way, it can be advantageously made of plastic, for example acryl butyl styrene (ABS), or even polycarbonate, without any opening, which gives it great security from the point of view of electrical insulation. In addition, the inductor winding (7) does not have many turns, unlike a transformer operating at the mains frequency, the electrical insulation between the turns can be greater without significantly increasing the size of the inductor, thus avoiding the possibility of a short circuit between the turns and therefore the risk of fire.

Selon une caractéristique de l'invention, le bobinage inducteur (7) est situé juste en dessous de la base (8) du U constitutif du socle (1).According to a characteristic of the invention, the induction winding (7) is located just below the base (8) of the U constituting the base (1).

Le courant haute fréquence qui circule dans le bobinage inducteur (7) crée, de manière connue, un champ électromagnétique variable de même fréquence, qui traverse, sans absorption, les parois plastiques du socle et notamment la paroi qui lui est immédiatement voisine et correspondant à la base (8) du U.The high frequency current which circulates in the field winding (7) creates, in known manner, a variable electromagnetic field of the same frequency, which crosses, without absorption, the plastic walls of the base and in particular the wall which is immediately adjacent to it and corresponding to the base (8) of the U.

Le pistolet ou sèche-cheveux proprement dit (3) conforme à l'invention est également réalisé en matière plastique, tel que ABS ou polycarbonate. Fondamentalement, il comprend un réservoir accumulateur et échangeur de chaleur (9) contenant un matériau caloporteur. Le réservoir (9) reçoit également à l'intérieur une ou plusieurs résistances électriques (10). Le matériau caloporteur peut être liquide ou solide à température ambiante. Les résistances électriques (10) portent ce matériau, pendant la période de recharge, c'est à dire de non utilisation, à une température maximale, contrôlée au moyen d'un thermostat (11), dont la sonde est située contre le réservoir (9). Typiquement, la température maximale est voisine de 100°C. De fait, selon la nature du matériau caloporteur contenu dans le réservoir (9), le processus de chauffe engendre soit une simple élévation de température dudit matériau, ce dernier restant dans la phase physique dans laquelle il se trouve, soit un changement d'état de phase par absorption de l'énergie latente de changement d'état. De la sorte, lors de la restitution de la chaleur par le matériau caloporteur, soit on utilise la chaleur correspondant au refroidissement du matériau dans le cadre d'une conservation de la phase, soit on utilise d'une part le refroidissement des deux phases successives du matériau et d'autre part, la chaleur latente du changement d'état, tel que le passage gaz-liquide ou liquide-solide.The gun or hair dryer proper (3) according to the invention is also made of plastic, such as ABS or polycarbonate. Basically, it includes an accumulator tank and heat exchanger (9) containing a heat transfer material. The reservoir (9) also receives inside one or more electrical resistances (10). The heat transfer material can be liquid or solid at room temperature. The electric resistors (10) bring this material, during the recharging period, that is to say of non-use, to a maximum temperature, controlled by means of a thermostat (11), the probe of which is situated against the tank ( 9). Typically, the maximum temperature is close to 100 ° C. In fact, depending on the nature of the heat transfer material contained in the tank (9), the heating process generates either a simple rise in temperature of said material, the latter remaining in the physical phase in which it is found, or a change of state. phase by absorption of the latent energy of change of state. In this way, when the heat is returned by the heat-transfer material, either the heat corresponding to the cooling of the material is used in the context of phase conservation, or the cooling of the two successive phases is used on the one hand of the material and on the other hand, the latent heat of the change of state, such as the gas-liquid or liquid-solid passage.

Il est à noter que le changement d'état permet, pour un même volume de réservoir, d'accumuler davantage de chaleur et donc, d'en restituer davantage lorsque le besoin s'en fera sentir. L'encombrement du réservoir (9) peut de fait s'en trouver réduit.It should be noted that the change of state allows, for the same volume of tank, to accumulate more heat and therefore, to restore more when the need arises. The size of the tank (9) can in fact be reduced.

Le réservoir (9) joue le rôle d'échangeur de chaleur lors de la phase d'utilisation du pistolet (3). De la sorte, il est réalisé dans un métal conducteur de la chaleur, par exemple en aluminium, et comporte à sa périphérie, en vue d'un meilleur échange thermique des ailettes (12) de refroidissement, s'étendant radialement à partir du réservoir, augmentant de la sorte la surface d'échange avec l'air pulsé tel qu'il sera décrit ultérieurement.The reservoir (9) acts as a heat exchanger during the use phase of the gun (3). In this way, it is made of a heat-conductive metal, for example aluminum, and comprises at its periphery, for better heat exchange, the cooling fins (12), extending radially from the tank. , thereby increasing the exchange surface with the forced air as will be described later.

Typiquement, le volume interne du réservoir (9) est voisine de 70 à 100 millilitres, et ce pour un sèche-cheveux plus spécifiquement destiné aux bébés et aux jeunes enfants. On peut de la même manière prévoir un réservoir de capacité comprise entre 200 et 400 millilitres, sans pour autant augmenter considérablement l'encombrement du sèche-cheveux.Typically, the internal volume of the reservoir (9) is close to 70 to 100 milliliters, and this for a hair dryer more specifically intended for babies and young children. We can similarly provide a tank with a capacity between 200 and 400 milliliters, without considerably increasing the size of the hair dryer.

Le pistolet (3) comporte en outre un moteur (13) actionnant un ventilateur (14). De manière connue, celui-ci est destiné à aspirer l'air ambiant externe au pistolet (3) et ce, par l'intermédiaire d'ouies ménagées au niveau de sa face postérieure (15), et à pulser cet air vers le réservoir (9), l'air étant ainsi forcé entre le boitier externe du pistolet réalisé comme déjà dit en matière plastique et le réservoir (9), permettant d'assurer un échange thermique entre l'air et ce dernier, en vue de générer un flux d'air chaud émergeant de la face antérieure (16) du pistolet (3). Le moteur (13) est activé électriquement au moyen de batteries rechargeables (17) ménagées dans le manche du pistolet (3). La mise en route du moteur (13) s'effectue par simple pression sur un bouton poussoir (18) ménagé au niveau de la face antérieure du manche du pistolet (3). Toutefois, il serait tout à fait concevable d'envisager la mise en route du moteur (13) du ventilateur (14) par tout autre moyen, tel qu'un organe de détection du déplacement du pistolet hors du socle, et une temporisation, etc. .The gun (3) further comprises a motor (13) actuating a fan (14). In known manner, this is intended to suck the ambient air external to the gun (3) and this, by means of openings made at its rear face (15), and to pulsate this air towards the reservoir. (9), the air being thus forced between the external casing of the pistol produced as already said in plastic material and the reservoir (9), making it possible to ensure a heat exchange between the air and the latter, in order to generate a flow of hot air emerging from the front face (16) of the gun (3). The motor (13) is activated electrically by means of rechargeable batteries (17) arranged in the handle of the pistol (3). The engine (13) is started by simply pressing a push button (18) formed at the level of the front face of the pistol handle (3). However, it would be entirely conceivable to envisage starting the motor (13) of the fan (14) by any other means, such as a member for detecting the movement of the pistol out of the base, and a time delay, etc. . .

Il va être décrit plus en détail l'alimentation en énergie électrique des résistances (10) et le rechargement des batteries (17) du pistolet (3). On a représenté sur la figure 2 un schéma électrique sommaire correspondant au circuit électrique secondaire du pistolet (3). Fondamentalement, ce circuit comporte un bobinage capteur ou induit (19) de forme circulaire, ménagé parallèlement et au voisinage immédiat de la face postérieure (15) du pistolet (3). Ce bobinage capteur (19) est de même nature que celui du socle (1). Il est monté en parallèle avec un condensateur C de manière à former un circuit bouchon ou circuit oscillant, dont la fréquence de résonance est légèrement supérieure à celle du fonctionnement du circuit. Ce circuit constitue une source de tension alternative, de fréquence égale à celle du circuit générateur, et fonctionne suivant le principe de l'induction électromagnétique : le champ électromagnétique émis par l'inducteur (7) est capté à distance par l'induit (19) et transforme ce champ en force électromotrice. De fait, la distance entre l'inducteur (7) et l'induit (19) peut atteindre quelques centimètres, ce qui donne un isolement relativement important entre le circuit primaire générateur contenu dans le socle (1) et le circuit bouchon secondaire contenu dans le pistolet (3). En conséquence, il y a absence de contact électrique entre ces deux circuits.There will be described in more detail the supply of electrical energy to the resistors (10) and the recharging of the batteries (17) of the gun (3). FIG. 2 shows a summary electrical diagram corresponding to the secondary electrical circuit of the gun (3). Basically, this circuit comprises a sensor or armature winding (19) of circular shape, arranged in parallel and in the immediate vicinity of the rear face (15) of the gun (3). This sensor winding (19) is of the same nature as that of the base (1). It is mounted in parallel with a capacitor C so as to form a plug circuit or oscillating circuit, the resonance frequency of which is slightly higher than that of the operation of the circuit. This circuit constitutes an alternating voltage source, of frequency equal to that of the generator circuit, and operates according to the principle of electromagnetic induction: the electromagnetic field emitted by the inductor (7) is sensed remotely by the armature (19 ) and transforms this field into an electromotive force. In fact, the distance between the inductor (7) and the armature (19) can reach a few centimeters, which gives a relatively large isolation between the primary generator circuit contained in the base (1) and the secondary plug circuit contained in the gun (3). Consequently, there is no electrical contact between these two circuits.

Le circuit électrique secondaire alimente tout d'abord en parallèle les résistances électriques (10) servant à échauffer le matériau caloporteur contenu dans le réservoir clos (9) pendant les périodes de non utilisation.The secondary electrical circuit firstly supplies the electrical resistances (10) in parallel which are used to heat the heat transfer material contained in the closed tank (9) during periods of non-use.

En outre, il alimente par l'intermédiaire d'une diode (20) la batterie (17) d'alimentation du moteur (13) du ventilateur (14), en vue de son rechargement. De fait, la batterie se charge pendant les périodes de non utilisation.In addition, it supplies via a diode (20) the battery (17) supplying the motor (13) of the fan (14), with a view to recharging it. In fact, the battery charges during periods of non-use.

En période de non utilisation, le pistolet (3) repose sur le socle (1) et plus précisément, repose par l'intermédiaire de sa face postérieure (15) située au voisinage de la face supérieure (8) du socle (1). Ainsi ces deux faces, et par conséquent l'inducteur (7) et l'induit (19) se trouvent parallèles l'un à l'autre. L'inducteur (7) et l'induit (19) se trouvent à une distance voisine de un à deux centimètres. Le socle étant relié au secteur d'alimentation électrique, il y a donc génération d'un champ électromagnétique provoquant d'une part, le chargement de la batterie (17), et d'autre part, l'échauffement du matériau caloporteur contenu dans le réservoir clos (9). Compte tenu de la présence du thermostat (11), quelle que soit la durée de la période de non utilisation, il n'y pas de risque d'échauffement intempestif du matériau caloporteur.Corrélativement compte tenu de la présence de la diode (20), une fois la batterie (17) rechargée, il n'y a pas risque de la voir se décharger dans le circuit électrique secondaire.When not in use, the gun (3) rests on the base (1) and more precisely, rests via its rear face (15) located in the vicinity of the upper face (8) of the base (1). Thus these two faces, and consequently the inductor (7) and the armature (19) are parallel to each other. The inductor (7) and the armature (19) are located at a distance of one to two centimeters. The base being connected to the power supply sector, there is therefore generation of an electromagnetic field causing on the one hand, the charging of the battery (17), and on the other hand, the heating of the heat transfer material contained in the closed tank (9). Taking into account the presence of the thermostat (11), whatever the duration of the period of non-use, there is no risk of inadvertent heating of the heat transfer material. Correspondingly taking into account the presence of the diode (20) , once the battery (17) is recharged, there is no risk of it being discharged in the secondary electrical circuit.

En période d'utilisation, le pistolet (3) n'est donc plus encastré dans le socle (1), et l'utilisateur actionne un interrupteur (18) destiné à mettre en route le ventilateur (14), pulsant de l'air ambiant au contact du réservoir (9), afin de générer un flux d'air chaud au niveau de la face antérieure (16). Corrélativement, la puissance absorbée par le socle lorsque le pistolet n'y est plus encastré est nulle, compte tenu que le circuit primaire comporte un organe de détection de l'amplitude des oscillations au niveau de l'inducteur (7), propre à ouvrir le circuit primaire.When in use, the gun (3) is no longer embedded in the base (1), and the user actuates a switch (18) intended to start the ventilator (14), pulsating ambient air in contact with the reservoir (9), in order to generate a flow of hot air at the level of the anterior face (16). Correlatively, the power absorbed by the base when the gun is no longer embedded therein is zero, given that the primary circuit includes a member for detecting the amplitude of the oscillations at the level of the inductor (7), suitable for opening the primary circuit.

Typiquement, la chaleur accumulée pendant la période de recharge durant par exemple deux heures, peut être ainsi entièrement restituée en dix minutes de fonctionnement. Ce résultat a pour avantage d'avoir un appareil de puissance absorbée sur le secteur une dizaine de fois plus faible que la puissance instantanée restituée. Ainsi, un sèche-cheveux de puissance calorifique de 500 Watts (W), n'absorbera qu'environ 50 Watts en période de recharge. Ceci minimise les composants du générateur contenus dans le socle, diminuant corrélativement le coût de revient d'un tel appareil.Typically, the heat accumulated during the recharging period lasting for example two hours, can thus be entirely restored in ten minutes of operation. This result has the advantage of having a device of power absorbed on the sector ten times lower than the instantaneous power restored. Thus, a hair dryer with a heating power of 500 Watts (W), will only absorb about 50 Watts during the recharging period. This minimizes the generator components contained in the base, correspondingly reducing the cost price of such a device.

Ainsi, l'utilisation du pistolet sèche-cheveux est simple et s'effectue en toute sécurité puisque l'arrêt du ventilateur stoppe instantanément l'émission d'air chaud, sans risque de surchauffe à l'intérieur du pistolet puisque les résistances électriques ne sont plus alimentées dès lors que le pistolet n'est plus encastré dans le socle. En outre, ce sèche-cheveux est très maniable du fait de l'absence de cordon d'alimentation électrique, et aussi sans aucun danger pour l'utilisateur, même en cas de pénétration d'eau.Thus, the use of the hair dryer gun is simple and is carried out in complete safety since stopping the fan instantly stops the emission of hot air, without risk of overheating inside the gun since the electrical resistances do not are more supplied when the gun is no longer embedded in the base. In addition, this hairdryer is very handy due to the absence of an electric power cord, and also without any danger for the user, even in the event of water penetration.

Claims (6)

1/ Sèche-cheveux électrique autonome constitué d'un socle (1) raccordé par une prise (2) au secteur d'alimentation électrique et d'un sèche-cheveux portable proprement dit (3), encastrable dans ledit socle (1), caractérisé en ce que le sèche-cheveux proprement dit (3) comprend : - une réserve thermique (9) dont le chauffage est réalisé en dehors des périodes d'utilisation lorsque le sèche-cheveux (3) est positionné sur son socle (1), - un accumulateur d'énergie électrique (17), rechargé à partir du socle (1), lorsque le sèche-cheveux (3) est positionné sur son socle (1), au moyen d'un circuit électrique intégré dans ledit sèche-cheveux, cette énergie électrique n'étant utilisée en cours de fonctionnement que pour l'évacuation de l'énergie calorifique emmagasinée dans la réserve thermique (9) hors dudit sèche-cheveux. 1 / autonomous electric hair dryer consisting of a base (1) connected by a socket (2) to the power supply sector and of an actual portable hair dryer (3), which can be built into said base (1), characterized in that the actual hair dryer (3) comprises: - a thermal reserve (9), the heating of which is carried out outside the periods of use when the hair dryer (3) is positioned on its base (1), - an electric energy accumulator (17), recharged from the base (1), when the hair dryer (3) is positioned on its base (1), by means of an electric circuit integrated in said hair dryer , this electrical energy being used during operation only for the evacuation of the heat energy stored in the thermal reserve (9) out of said hair dryer. 2/ Sèche-cheveux électrique autonome constitué d'un socle (1) raccordé par une prise (2) au secteur d'alimentation électrique et d'un sèche-cheveux portable proprement dit (3), encastrable dans ledit socle (1) ; - le socle (1) comportant un circuit électrique primaire (5,6), générateur d'énergie, destiné à venir en regard de la face postérieure (15) du sèche-cheveux proprement dit (3) lorsque ce dernier est encastré dans le socle (1) ; - le sèche-cheveux propement dit (3) comprenant un circuit électrique secondaire, alimenté électriquement lorsque le sèche-cheveux (3) est encastré dans le socle (1), afin de charger un accumulateur (17) intégré dans ledit circuit électrique secondaire, destiné au fonctionnement du moteur (13), et afin d'alimenter en énergie électrique une ou plusieurs résistances électriques (10) ; caractérisé en ce que : - le circuit électrique primaire (5,6) est destiné à générer une énergie haute fréquence au niveau d'un inducteur (7) ménagé au niveau de l'une des faces (8) du socle (1), afin d'alimenter en énergie électrique par induction électro-magnétique le circuit électrique secondaire lorsque le sèche-cheveux (3) est encastré dans le dit socle (1), ledit circuit secondaire comprenant un bobinage induit (19) ménagé au niveau de la face postérieure (15) du sèche-cheveux, monté en parallèle avec un condensateur C afin de former un circuit oscillant bouchon de fréquence de résonance légèrement supérieure à la fréquence de résonance du circuit primaire, ledit circuit secondaire comportant en outre en parallèle l'accumulateur (17) muni d'un redresseur (20), destiné à alimenter en énergie électrique le moteur (13) ; - un réservoir clos accumulateur et échangeur de chaleur (9) contenant un matériau caloporteur chauffé au moyen desdites résistances électriques (10) est intégré dans le sèche-cheveux (3) ; - le sèche-cheveux (3) comprend également un ventilateur (14), activé par ledit moteur électrique (13), et destiné à pulser de l'air ambiant sur ledit réservoir (9) en vue de générer un flux d'air chaud, par échange thermique entre l'air ambiant et ledit réservoir. 2 / autonomous electric hair dryer consisting of a base (1) connected by a socket (2) to the power supply sector and of a portable hair dryer proper (3), which can be built into said base (1); - The base (1) comprising a primary electrical circuit (5,6), energy generator, intended to come opposite the rear face (15) of the hair dryer itself (3) when the latter is embedded in the base (1); the actual hair dryer (3) comprising a secondary electrical circuit, electrically powered when the hair dryer (3) is embedded in the base (1), in order to charge an accumulator (17) integrated in said secondary electrical circuit, intended for the operation of the motor (13), and in order to supply electrical energy to one or more electrical resistors (10); characterized in that: - The primary electrical circuit (5,6) is intended to generate high frequency energy at the level of an inductor (7) formed at the level of one of the faces (8) of the base (1), in order to supply electrical energy by electro-magnetic induction the secondary electrical circuit when the hair dryer (3) is embedded in said base (1), said secondary circuit comprising an induced winding (19) formed at the rear face (15) of the hair dryer, mounted in parallel with a capacitor C in order to form a plug oscillating circuit with a resonant frequency slightly greater than the resonant frequency of the primary circuit, said secondary circuit further comprising in parallel the accumulator (17) provided with a rectifier (20), intended to supply electric power to the motor (13); - a closed accumulator and heat exchanger tank (9) containing a heat transfer material heated by means of said electrical resistors (10) is integrated in the hair dryer (3); - the hair dryer (3) also comprises a fan (14), activated by said electric motor (13), and intended to pulsate ambient air on said tank (9) in order to generate a flow of hot air , by heat exchange between the ambient air and said tank. 3/ Sèche-cheveux électrique autonome selon la revendication 2, caractérisé en ce que le chauffage du matériau caloporteur n'est réalisé que lorsque le circuit électrique secondaire est alimenté électriquement, c'est-à-dire lorsque le sèche-cheveux (3) est encastré sur son socle (1). 3 / autonomous electric hair dryer according to claim 2, characterized in that the heating of the heat transfer material is carried out only when the secondary electric circuit is electrically supplied, that is to say when the hair dryer (3) is recessed on its base (1). 4/ Sèche-cheveux électrique autonome selon l'une des revendications 2 et 3, caractérisé en ce que le réservoir accumulateur et échangeur de chaleur (9) comporte des ailettes (12) s'étendant radialement à partir de celui-ci, et destinées à optimiser l'échange thermique entre l'air ambiant pulsé par le ventilateur (14) et ledit réservoir (9). 4 / autonomous electric hair dryer according to one of claims 2 and 3, characterized in that the accumulator tank and heat exchanger (9) comprises fins (12) extending radially therefrom, and intended to optimize the heat exchange between the ambient air blown by the fan (14) and said tank (9). 5/ Sèche-cheveux électrique autonome selon l'une des revendications 2 à 4, caractérisé en ce que le circuit électrique secondaire comporte en outre un thermostat (11), dont la sonde est située sur le réservoir accumulateur et échangeur de chaleur (9), destiné à contrôler la température du matériau caloporteur lorsque ledit matériau est en chauffe, c'est à dire lorsque le sèche-cheveux (3) est en place sur son socle (1). 5 / autonomous electric hair dryer according to one of claims 2 to 4, characterized in that the secondary electric circuit further comprises a thermostat (11), the probe of which is located on the storage tank and heat exchanger (9) , intended to control the temperature of the heat transfer material when said material is in heating, that is to say when the hair dryer (3) is in place on its base (1). 6/ Sèche-cheveux électrique autonome selon l'une des revendications 2 à 5, caractérisé en ce que le socle (1) est de forme généralement circulaire, dont la section transversale est en forme de U, dont la base (8) reçoit l'inducteur (7) du circuit électrique primaire (5,6), et vient en contact avec la face postérieure (15) du sèche-cheveux proprement dit (3) lorsque ce dernier est encastré sur le socle (1). 6 / autonomous electric hair dryer according to one of claims 2 to 5, characterized in that the base (1) is of generally circular shape, whose cross section is U-shaped, whose base (8) receives l 'inductor (7) of the primary electrical circuit (5,6), and comes into contact with the rear face (15) of the hair dryer itself (3) when the latter is embedded on the base (1).
EP91420179A 1990-06-12 1991-06-06 Autonomous electrical hair-dryer Expired - Lifetime EP0462027B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007549 1990-06-12
FR9007549A FR2662919B1 (en) 1990-06-12 1990-06-12 SELF-CONTAINED ELECTRIC HAIR DRYER.

Publications (2)

Publication Number Publication Date
EP0462027A1 true EP0462027A1 (en) 1991-12-18
EP0462027B1 EP0462027B1 (en) 1995-05-24

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Family Applications (1)

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EP91420179A Expired - Lifetime EP0462027B1 (en) 1990-06-12 1991-06-06 Autonomous electrical hair-dryer

Country Status (5)

Country Link
US (1) US5195253A (en)
EP (1) EP0462027B1 (en)
JP (1) JPH06339407A (en)
DE (1) DE69109936D1 (en)
FR (1) FR2662919B1 (en)

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GB2253351A (en) * 1991-03-08 1992-09-09 Peter Smart Hand-held, rechargeable battery powered dentist's warm air blower
WO1999001049A1 (en) * 1997-07-04 1999-01-14 Faco S.A. Hair-drier or the like

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US5404419A (en) * 1993-06-25 1995-04-04 Artis, Jr.; Amos Wall-mounted cordless dryer for the hands with battery charging circuit, AM/FM radio, and vertical positioning means
US5394620A (en) * 1994-04-20 1995-03-07 Chimera; Carmen R. Body dryer
GB2299755A (en) * 1995-04-13 1996-10-16 Jennifer Cheyne Battery operated hair dryer
USD380540S (en) * 1995-05-24 1997-07-01 Seatvet Scott D Portable heater-blower
US5787228A (en) * 1996-02-28 1998-07-28 Fiely; Sharon K. Portable vehicle articulated windshield defroster with heated air-flow and timer
US5608975A (en) * 1996-05-29 1997-03-11 Hsu; Jong-Yes Collapsible and portable hair dryer with combustion heat supply system
US6092260A (en) * 1997-04-18 2000-07-25 Ryobi North America, Inc. Hand-held blower
USD415854S (en) * 1998-08-10 1999-10-26 The Gary L. Marcus Company, Inc. Hair dryer stand
TW475890B (en) * 1999-07-16 2002-02-11 Tek Maker Corp Portable hot-air blower
US6314236B1 (en) * 2000-01-27 2001-11-06 Conair Corporation Cordless dryer safety interlock system
US6408131B2 (en) * 2000-07-12 2002-06-18 Tek Maker Corporation Portable dryer with different circuit designs
US6732449B2 (en) 2000-09-15 2004-05-11 Walter Evanyk Dryer/blower appliance with efficient waste heat dissipation
WO2004010838A2 (en) * 2002-07-26 2004-02-05 Innodesk Business Tools, Inc. Portable hand-held battery-operated dust blower
US6964116B2 (en) * 2002-12-02 2005-11-15 Kroll Mollie B Ambulatory hairdryer
US20050229425A1 (en) * 2002-12-02 2005-10-20 Kroll Mollie B Ambulatory hairdryer
US20040168337A1 (en) * 2002-12-12 2004-09-02 Caitlyn Curtin Hands-free hair and body dryer that allows a wide range of motion
US6901214B2 (en) * 2003-08-26 2005-05-31 Tek Maker Corporation Multiple-setting portable dryer and circuit designs thereof
US6966125B2 (en) * 2003-09-18 2005-11-22 Shoot The Moon Products Ii, Llc Automatic air movement for hair dryers
US9599367B1 (en) * 2003-10-01 2017-03-21 Carline Curry Portable battery operated heater
US20050091866A1 (en) * 2003-10-29 2005-05-05 Attaway Sebastian L. Cordless hair dryer (the tootie)
GB2413073A (en) * 2004-04-14 2005-10-19 Kenford Ind Co Ltd Nozzle having thermal capacitance element
CN100377676C (en) * 2004-10-13 2008-04-02 桓科股份有限公司 Portable blower possessing multiple settings and related circuits
US20080256825A1 (en) * 2007-04-17 2008-10-23 Hokwang Industries Co., Ltd. Hand dryer with visible light indicated sensing area
US20090044420A1 (en) * 2007-08-16 2009-02-19 Hokwang Industries Co., Ltd. Light directing hand dryer
US7946056B2 (en) 2008-01-23 2011-05-24 Kroll Family Trust Ambulatory hairdryer
US7913416B1 (en) 2008-05-12 2011-03-29 Frank Scieri Portable hair dryer optimally having a dual heating source
ES2565927T3 (en) * 2008-09-23 2016-04-07 Larada Sciences Inc. Air flow applicators and corresponding treatment procedures
US20110196360A1 (en) * 2009-12-31 2011-08-11 Mccatty Michael Hand manipulative dermatological instrument for blowing air across wounds
DE102012002440B4 (en) 2012-02-03 2014-06-26 Technische Universität Ilmenau Apparatus and method for generating a hot air stream
GB201211253D0 (en) 2012-06-25 2012-08-08 Jemella Ltd Hair dryer
GB2500733B (en) * 2012-06-25 2014-05-21 Jemella Ltd Hair styling appliance
GB2508590C (en) 2012-12-03 2021-05-05 Jemella Ltd Hair styling apparatus
KR101393990B1 (en) * 2013-02-04 2014-05-12 이용학 Hair dryer
DE102014004602A1 (en) 2014-03-27 2015-10-01 Technische Universität Ilmenau Apparatus and method for treating an air stream
WO2016072031A1 (en) * 2014-11-07 2016-05-12 株式会社イデア Dryer
CN104433134A (en) * 2014-11-27 2015-03-25 桂林电子科技大学 Silencing, energy-saving and radiation preventing electric hair drier
US9707580B1 (en) 2015-01-03 2017-07-18 Dennis J. Mancl High voltage fan motor powered by low voltage
US9795200B2 (en) 2015-06-30 2017-10-24 Annmarie Annunziata Solar powered cordless hair dryer
DE102015121891A1 (en) * 2015-12-15 2017-06-22 Wagner Spraytech (UK) Ltd. System comprising a hot air handler and a transport case for the hot air handler, carrying case and method for operating a hot air handler
ES1186733Y (en) * 2017-06-15 2017-09-27 Vega Javier Gonzalez Heating hanger
DE202017003680U1 (en) * 2017-07-13 2017-09-14 PLANK EXKLUSIV Christian Plank e.K. Hair drying system
KR102014450B1 (en) * 2018-01-09 2019-08-27 이창희 Wireless Hair dryer
US10779625B2 (en) 2018-07-09 2020-09-22 Christine Thein Battery powered collapsible blow-dryer
CN109512121A (en) * 2018-11-30 2019-03-26 赵彦芳 A kind of chargeable pressure swing type hair dryer of electromagnetic induction heating
KR102039504B1 (en) * 2019-05-08 2019-11-01 숭실대학교산학협력단 Cordless hair dryer
CN213936623U (en) 2020-11-10 2021-08-10 深圳市华思旭科技有限公司 Wireless hair drier and charging socket thereof

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US3938018A (en) * 1974-09-16 1976-02-10 Dahl Ernest A Induction charging system
US4397055A (en) * 1980-10-20 1983-08-09 Cuchiara Samuel M Reversable shaft with rotary and selective oscillating motion
DE3429319A1 (en) * 1984-08-09 1986-02-27 Gimelli & Co. AG, Zollikofen Portable hot-air apparatus
EP0176441A1 (en) * 1984-09-24 1986-04-02 Ixia Conceptique Industrielle Heating instrument with heat accumulation
EP0203437A2 (en) * 1985-05-22 1986-12-03 Braun Aktiengesellschaft Fan-assisted air heater
GB2183154A (en) * 1985-11-23 1987-06-03 Braun Ag Hair dryer

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US3938018A (en) * 1974-09-16 1976-02-10 Dahl Ernest A Induction charging system
US4397055A (en) * 1980-10-20 1983-08-09 Cuchiara Samuel M Reversable shaft with rotary and selective oscillating motion
DE3429319A1 (en) * 1984-08-09 1986-02-27 Gimelli & Co. AG, Zollikofen Portable hot-air apparatus
EP0176441A1 (en) * 1984-09-24 1986-04-02 Ixia Conceptique Industrielle Heating instrument with heat accumulation
EP0203437A2 (en) * 1985-05-22 1986-12-03 Braun Aktiengesellschaft Fan-assisted air heater
GB2183154A (en) * 1985-11-23 1987-06-03 Braun Ag Hair dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253351A (en) * 1991-03-08 1992-09-09 Peter Smart Hand-held, rechargeable battery powered dentist's warm air blower
WO1999001049A1 (en) * 1997-07-04 1999-01-14 Faco S.A. Hair-drier or the like

Also Published As

Publication number Publication date
FR2662919B1 (en) 1993-07-16
FR2662919A1 (en) 1991-12-13
DE69109936D1 (en) 1995-06-29
JPH06339407A (en) 1994-12-13
US5195253A (en) 1993-03-23
EP0462027B1 (en) 1995-05-24

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