EP0637920B1 - Method for treating an object with a stream of hot air, and hand-held appliance for carrying out the method - Google Patents

Method for treating an object with a stream of hot air, and hand-held appliance for carrying out the method Download PDF

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Publication number
EP0637920B1
EP0637920B1 EP94909102A EP94909102A EP0637920B1 EP 0637920 B1 EP0637920 B1 EP 0637920B1 EP 94909102 A EP94909102 A EP 94909102A EP 94909102 A EP94909102 A EP 94909102A EP 0637920 B1 EP0637920 B1 EP 0637920B1
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EP
European Patent Office
Prior art keywords
hand
appliance
hot
held appliance
held
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP94909102A
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German (de)
French (fr)
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EP0637920A1 (en
Inventor
Werner Fertig
Robert Schramm
Frank Seja
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Procter and Gamble Deutschland GmbH
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Wella GmbH
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Publication of EP0637920A1 publication Critical patent/EP0637920A1/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
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a hand-held device according to the preamble of claim 2.
  • Handheld devices are known, for. B. by Hair dryer or hot air hand showers. Especially when professional work (hairdresser) with such a handheld device for treatment There are many of a hairdresser's hair on the head by means of a warm air flow Interruptions in the hot air flow treatment necessary due to e.g. B. interim combing, winding, unwinding, dividing or organizing of the hair. It runs especially for short-term Treatment interruptions - for reasons of convenience - the handheld device the set heating output of approx. 500 to 1500 watts, the Hot air stream flows uselessly past the hair on the head. To better the energy too the handheld device would often have to be switched off and on manually, which is very annoying in practice and is therefore not practiced.
  • DE-A-2711113 discloses a method or device of the same type, that automatically switches a heater and blower on or off. At a Handheld device of this type there is a risk that the deposited and thus automatically switched off device the impression of a completely switched off Device would do. By a person walking past the device or by Twisting / falling down of the device can turn this on and off automatically cause an accident.
  • the invention is therefore based on the object of a method according to the Preamble of claim 1 and a handheld device according to the preamble of To create claim 2, with the on treatment interruptions more conveniently the energy can be better used or the above mentioned accident risk is avoided.
  • the invention is based on several exemplary embodiments explained in more detail.
  • FIG. 1 shows the device 3 switched on a predetermined heating power of the heating device 5, whereby for treating an object 1 - for example the hair a hairdresser - the warm air flow 2 on object 1 is directed.
  • an airflow outlet opening 6 is an ultrasonic transmitter 7 and an ultrasonic receiver 8 or a light transmitter 9 and a light receiver 10 arranged.
  • an ultrasound field 11 or a light beam 12 emitted To detect an object 1 is used by the transmitter 7, 9 an ultrasound field 11 or a light beam 12 emitted, whereby by detecting a reflected Ultrasonic field 13 or a reflected light beam 14 is determined by means of the receiver 8, 10 whether the Warm air flow 2 hits an object 1 or not. Does the Warm air flow 2 is not object 1, there is also no reflected sound field 13 or reflected light 14 before, so this state as a signal to turn off the Heating device 5 is implemented. Meets the warm air flow 2 object 1 again, a reflected one is created again Sound field 13 or reflected light 14 from the Receiver 8, 10 as a signal to switch on the heating device 5 is implemented.
  • the warm air flow 2 flows at the object 1 over to straighten hair 15, for example. Since now there is no reflected sound field 13 or reflected light 14, the heating device 5 switches itself on from (Fig. 3), which is from the transmitter 7, 9 outgoing ultrasound field 11 or light 12 continues is emitted. The handheld device 3 is again in the direction of the object 1 pivoted (Fig. 4), so arises again Reflective sound field 13 or reflected light 14 by the receiver 8, 10 as a corresponding signal for automatic operation Switch on the heating device 5 is implemented (Fig. 5). The one shown in Figs. 1 to 5 Ultrasonic field 11, 13 and light 12, 14 is only shown schematically and is only intended to function the Explain invention.
  • FIG. 7 A corresponding block diagram for carrying out the The method is shown in FIG. 7. That from that Transmitter 7, 9 emitted ultrasound field 11 or light 12 is by an object 1 as a reflex ultrasound field 13 or Lens 14 received by the receiver 8, 10 and by a device 16 converted into a control signal that a control device 17 is supplied for input and Switch off the heating device 5.
  • the device 3 operates in relation to the object 1 in a distance-dependent manner, the running time according to the ultrasound principle of the reflected ultrasonic pulses 13 as a measure of the Detection of the distance S is used. Will one specified distance S to object 1 exceeded (> S), switches itself - optionally with a time delay - the Heater 5 off.
  • a corresponding block diagram is shown in FIG 10.
  • Ultrasonic pulses 11 are from the ultrasonic receiver 8 received as reflected ultrasound pulses 13 and the corresponding transit times of the pulses 11 in a device 19 is determined and sent to the device 16 supplied for control signal formation.
  • a switch-off delay device 18 is provided become.
  • the Distance measuring device 19 sends a corresponding signal to the Control signal device 16 given a corresponding Off signal to the control device 17, the heater 5 switches off. Will be back Distance of ⁇ S is reached, the heating device 5 switched on again.
  • a block diagram corresponding to FIG. 12 is shown in 13 is shown, wherein a combined transmitter 7, 9 / Receiver 8, 10 is provided for sound and light.
  • FIG. 15 shows a schematic signal curve as to whether a Field 21 according to FIG. 14 is touched by an object 1 (A) or not (B) and the corresponding signals (C) (D).
  • the 16 is in a device 3 for detecting the Distance S an ultrasonic transducer 22 is provided, the alternating works as a sound transmitter 7 and sound receiver 8.
  • the Transmitter 7, 9 and receiver 8, 10 within the device 3 arranged, for example in the cavity 25 of the heating device 5, which means no external change to the device 3 see is.
  • a foreground suppression a Influence of the measurement by a contact protection grid 26 u. ⁇ . Avoided.
  • FIG. 21 provided a transmitter / receiver unit 7, 9/8, 10 Retrofit devices, for example a conventional one Handle 27 replaced by a new handle 28 is.
  • the 22 is a reflected light barrier in the device 3 with a plurality of light transmitters 9 and a light receiver 10 shown, being by different modulations or Coding of the light beams 14 in a certain area the distance between object 1 and the airflow outlet 6 can be detected.
  • FIG. 23 The simplest embodiment is shown in FIG. 23 a mechanical key switch 29 is provided for the corresponding Object distance monitoring, the push button 29 switches off the heating device 5 when the distance a is exceeded.
  • a particularly switch-safe embodiment is according to 24 in that a beam path 30 is interrupted by object 1, e.g. B. by means of a fork-like configuration 31.
  • an air pressure sensor 32 within the device 3 to arrange. It is assumed that an object located in front of the air outlet opening 6 1 influences the air pressure inside the device 3, since exposure to a warm air stream 2 an object 1 an air flow pressure increase and an air flow pressure reduction versus the state of free blowing has the consequence.
  • FIG. 26 is a corresponding diagram after the Embodiment shown in FIG. 25, wherein from a certain air flow pressure level when one is reached predetermined switching threshold 42 at switching point 43 Heater 5 is turned on. It can be provided are to set the switching point 43 so that the corresponding air pressure L corresponds to the distance S and thereby a comparable function with a club-like Has ultrasonic field 21 according to FIG. 14.
  • FIG. 27 provided the distance measuring device 19 (Fig. 11, 22) for Determination of the distance S between an airflow outlet opening 6 and an object 1 or an object surface 1 to regulate a heating power P. in order to keep a given constant Airflow temperature on object 1, taking the scheme the heating power P proportional to the distance S of the im monitoring room 44 located object 1, which keeps the temperature constant over a wide range regardless of the distance S is reached. At large distance S, the heating power P is therefore relatively large; at a small distance S relatively small (the heating power P changes approximately square to distance). Of the schematically illustrated control curve 45 in FIG. 27 maintains the temperature at object 1 at a changed distance a constant.
  • control curve 48 is proportional to the heating power P. to the size D of the object located in the monitoring room 44 1 is done. Is z. B. before a large strand of hair, so there is a greater heating output P. All control processes 45 to 48 are connected to the corresponding parameters of the to adapt each device 3.

Abstract

The invention concerns a method for treating an object (1) with a stream of hot air (2) generated by a hand-held appliance (3) and directed towards the object (1). The hand-held appliance (3) has a fan (4) and a heater (5). When the appliance (3) is switched on, a predetermined heating power of the heater (5) is automatically switched off or reduced when the stream of hot air (2) flows past the object (1) and is automatically set again when the stream of hot air (2) hits the object (1). Alternatively, when the appliance (3) is switched on, the predetermined heating power of the heater (5) is automatically switched off or reduced when a predetermined distance (S) between the object (1) and appliance (3) is exceeded and the predetermined heating power of the heater (5) is automatically set again when the predetermined distance (S) is reached or falls below a threshold value. A hand-held appliance is also disclosed for carrying out said process.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Anspruchs 1 und ein Handgerät nach dem Oberbegriff des Anspruchs 2.The invention relates to a method according to the preamble of claim 1 and a hand-held device according to the preamble of claim 2.

Handgeräte nach dem Oberbegriff des Anspruchs 2 sind bekannt, z. B. durch Haarhandtrockner oder Warmlufthandduschen. Insbesondere beim professionellen Arbeiten (Friseur) mit einem solchen Handgerät zum Behandeln von Kopfhaar eines Friseurkunden mittels eines Warmluftstromes sind viele Unterbrechungen der Warmluftstrombehandlung notwendig durch z. B. zwischenzeitiges Durchkämmen, Aufwickeln, Abwickeln, Abteilen oder Ordnen des Haars. Dabei läuft insbesondere bei kurzzeitigen Behandlungsunterbrechungen -aus Bequemlichkeitsgründen- das Handgerät mit der eingestellten Heizleistung von ca. 500 bis 1500 Watt weiter, wobei der Warmluftstrom nutzlos am Kopfhaar vorbei strömt. Um besser die Energie zu nutzen, müßte das Handgerät oftmals manuell aus- und eingeschaltet werden, was aber in der Praxis sehr lästig ist und daher nicht praktiziert wird. Aus der DE-A-2711113 ist ein gattungsgleiches Verfahren bzw. Gerät bekannt, das eine Heizung und ein Gebläse selbsttätig ein- bzw. ausschaltet. Bei einem Handgerät dieser Art besteht die Gefahr, daß das abgelegte und damit selbsttätig ausgeschaltete Gerät den Eindruck eines ganz ausgeschalteten Geräts machen würde. Durch eine am Gerät vorbeigehende Person oder durch Verdrehen/Hinunterfallen des Geräts kann sich dies selbsttätig einschalten und eine Unfallgefahr verursachen.Handheld devices according to the preamble of claim 2 are known, for. B. by Hair dryer or hot air hand showers. Especially when professional work (hairdresser) with such a handheld device for treatment There are many of a hairdresser's hair on the head by means of a warm air flow Interruptions in the hot air flow treatment necessary due to e.g. B. interim combing, winding, unwinding, dividing or organizing of the hair. It runs especially for short-term Treatment interruptions - for reasons of convenience - the handheld device the set heating output of approx. 500 to 1500 watts, the Hot air stream flows uselessly past the hair on the head. To better the energy too the handheld device would often have to be switched off and on manually, which is very annoying in practice and is therefore not practiced. DE-A-2711113 discloses a method or device of the same type, that automatically switches a heater and blower on or off. At a Handheld device of this type there is a risk that the deposited and thus automatically switched off device the impression of a completely switched off Device would do. By a person walking past the device or by Twisting / falling down of the device can turn this on and off automatically cause an accident.

Es liegt der Erfindung daher die Aufgabe zugrunde, ein Verfahren nach dem Oberbegriff des Anspruchs 1 und ein Handgerät nach dem Oberbegriff des Anspruchs 2 zu schaffen, mit dem bei Behandlungsunterbrechungen auf bequemer Weise die Energie besser genutzt werden kann bzw. die oben genannte Unfallgefahr vermieden wird. The invention is therefore based on the object of a method according to the Preamble of claim 1 and a handheld device according to the preamble of To create claim 2, with the on treatment interruptions more conveniently the energy can be better used or the above mentioned accident risk is avoided.

Gelöst werden diese Aufgaben nach dem jeweiligen kennzeichnenden Teil des Anspruchs 1 und 2. Vorteilhafte Weiterbildungen der Erfindung gehen aus den jeweiligen Unteransprüchen hervor.These tasks are solved according to the respective characterizing part of claim 1 and 2. Advantageous Developments of the invention go from the respective Sub-claims emerge.

Die Erfindung wird anhand mehrerer Ausführungsbeispiele näher erläutert.The invention is based on several exemplary embodiments explained in more detail.

Es zeigt:

Fig. 1 bis 5
mehrere Verfahrensschritte zum Behandeln eines Objekts mit einem Warmluftstrom mittels eines Handgeräts;
Fig. 6
ein Flußdiagramm;
Fig. 7
ein Blockschaltbild;
Fig. 8 und 9
mehrere Verfahrensschritte zum Behandeln eines Objekts mit einem Warmluftstrom mittels eines Handgeräts;
Fig. 10
ein Flußdiagramm;
Fig. 11
ein Blockschaltbild;
Fig. 12
ein Flußdiagramm;
Fig. 13
ein Blockschaltbild;
Fig. 14
ein Ultraschallfeld eines Geräts zur Erfassung eines Objekts;
Fig. 15
ein Signaldiagramm eines erfaßten Objekts;
Fig. 16
ein Handgerät mit einem neben einer Luftstromaustrittsöffnung angeordneten umschaltenden Ultraschallsender/-empfänger;
Fig. 17
ein Handgerät mit einem neben einer Luftstromaustrittsöffnung angeordneten separaten Ultraschallsender und -empfänger;
Fig. 18
ein Handgerät mit einer in einem Handgriff angeordneten Sender/Empfänger-Einheit;
Fig. 19
ein Handgerät mit einem an einer Ondulierdüse angeordneten Sender/Empfänger;
Fig. 20
ein Handgerät mit einer innerhalb einer Luftstromdüse angeordneten Sender/Empfänger-Einheit;
Fig. 21
eine an ein Handgerät verbindbare Sender/Empfänger-Einheit;
Fig. 22
ein Handgerät mit einer Reflexlichtschrankeneinrichtung;
Fig. 23
ein Handgerät mit einem mechanischen Tastschalter;
Fig. 24
ein Handgerät mit einer Lichtschrankeneinrichtung;
Fig. 25
einen im innern eines Handgeräts angeordneten Luftdrucksensor;
Fig. 26
ein Schaltschwellendiagramm in Abhängigkeit eines Luftströmungsdrucks des Handgeräts nach der Fig. 25;
Fig. 27
ein vom Abstand unabhängiges Regelungsverfahren zur Konstanthaltung der Temperatur eines Warmluftstroms auf ein Objekt;
Fig. 28
ein von der Objektgröße abhängiges Regelungsverfahren zur Konditionierung von Haar.
It shows:
1 to 5
several method steps for treating an object with a warm air flow by means of a hand-held device;
Fig. 6
a flow chart;
Fig. 7
a block diagram;
8 and 9
several method steps for treating an object with a warm air flow by means of a hand-held device;
Fig. 10
a flow chart;
Fig. 11
a block diagram;
Fig. 12
a flow chart;
Fig. 13
a block diagram;
Fig. 14
an ultrasonic field of a device for detecting an object;
Fig. 15
a signal diagram of a detected object;
Fig. 16
a handheld device with a switching ultrasonic transmitter / receiver arranged next to an airflow outlet opening;
Fig. 17
a hand-held device with a separate ultrasonic transmitter and receiver arranged next to an airflow outlet opening;
Fig. 18
a handheld device with a transmitter / receiver unit arranged in a handle;
Fig. 19
a hand-held device with a transmitter / receiver arranged on an undulating nozzle;
Fig. 20
a handheld device with a transmitter / receiver unit arranged within an airflow nozzle;
Fig. 21
a transmitter / receiver unit that can be connected to a handheld device;
Fig. 22
a handheld device with a reflex light barrier device;
Fig. 23
a handheld device with a mechanical key switch;
Fig. 24
a handheld device with a light barrier device;
Fig. 25
an air pressure sensor arranged inside a hand-held device;
Fig. 26
a switching threshold diagram as a function of an air flow pressure of the handheld device according to FIG. 25;
Fig. 27
a distance-independent control method for keeping the temperature of a warm air flow on an object constant;
Fig. 28
a regulation process for conditioning hair that depends on the size of the object.

In den Fig. 1 bis 5 sind mehrere Verfahrensschritte eines Verfahrens zum Behandeln eines Objekts 1 durch einen auf das Objekt 1 gerichteten Warmluftstrom 2 eines Handgeräts 3 mit einem Gebläse 4 und einer Heizeinrichtung 5 dargestellt. Fig. 1 zeigt das eingeschaltete Gerät 3 mit einer vorgegebenen Heizleistung der Heizeinrichtung 5, wobei zum Behandeln eines Objekts 1 - zum Beispiel das Haar einer Friseurkundin - der Warmluftstrom 2 auf das Objekt 1 gerichtet ist. Im Bereich einer Luftstromaustrittsöffnung 6 ist ein Ultraschallsender 7 und ein Ultraschallempfänger 8 oder ein Lichtsender 9 und ein Lichtempfänger 10 angeordnet. Zum detektieren eines Objekts 1 wird vom Sender 7, 9 ein Ultraschallfeld 11 oder ein Lichtstrahl 12 abgestrahlt, wobei durch eine Erfassung eines reflektierten Ultraschallfeldes 13 oder eines reflektierten Lichtstrahls 14 mittels des Empfängers 8, 10 festgestellt wird, ob der Warmluftstrom 2 ein Objekt 1 trifft oder nicht. Trifft der Warmluftstrom 2 nicht das Objekt 1, liegt auch kein reflektiertes Schallfeld 13 oder reflektiertes Licht 14 vor, so daß dieser Zustand als Signal zum Ausschalten der Heizeinrichtung 5 umgesetzt wird. Trifft der Warmluftstrom 2 wieder das Objekt 1, entsteht wieder ein reflektiertes Schallfeld 13 oder reflektiertes Licht 14, das vom Empfänger 8, 10 als Signal zum Einschalten der Heizeinrichtung 5 umgesetzt wird. 1 to 5, several process steps are one Method for treating an object 1 by a the object 1 directed hot air flow 2 of a handheld device 3 with a blower 4 and a heating device 5 shown. Fig. 1 shows the device 3 switched on a predetermined heating power of the heating device 5, whereby for treating an object 1 - for example the hair a hairdresser - the warm air flow 2 on object 1 is directed. In the area of an airflow outlet opening 6 is an ultrasonic transmitter 7 and an ultrasonic receiver 8 or a light transmitter 9 and a light receiver 10 arranged. To detect an object 1 is used by the transmitter 7, 9 an ultrasound field 11 or a light beam 12 emitted, whereby by detecting a reflected Ultrasonic field 13 or a reflected light beam 14 is determined by means of the receiver 8, 10 whether the Warm air flow 2 hits an object 1 or not. Does the Warm air flow 2 is not object 1, there is also no reflected sound field 13 or reflected light 14 before, so this state as a signal to turn off the Heating device 5 is implemented. Meets the warm air flow 2 object 1 again, a reflected one is created again Sound field 13 or reflected light 14 from the Receiver 8, 10 as a signal to switch on the heating device 5 is implemented.

In der Fig. 2 fließt der Warmluftstrom 2 am Object 1 vorbei, um zum Beispiel das Haar 15 zu richten. Da nunmehr kein Reflexschallfeld 13 oder Reflexlicht 14 vorhanden ist, schaltet sich selbsttätig die Heizeinrichtung 5 aus (Fig. 3), wobei das vom Sender 7, 9 abgehende Ultraschallfeld 11 oder Licht 12 weiterhin abgestrahlt wird. Wird das Handgerät 3 wieder in Richtung des Objects 1 geschwenkt (Fig. 4), so entsteht wieder ein Reflexschallfeld 13 bzw. Reflexlicht 14, das vom Empfänger 8, 10 als entsprechendes Signal zum selbsttätigen Einschalten der Heizeinrichtung 5 umgesetzt wird (Fig. 5). Das in dem Fig. 1 bis 5 gezeigte Ultraschallfeld 11, 13 und Licht 12, 14 ist Lediglich schematisch dargestellt und soll nur die Funktionsweise der Erfindung erläutern.2, the warm air flow 2 flows at the object 1 over to straighten hair 15, for example. Since now there is no reflected sound field 13 or reflected light 14, the heating device 5 switches itself on from (Fig. 3), which is from the transmitter 7, 9 outgoing ultrasound field 11 or light 12 continues is emitted. The handheld device 3 is again in the direction of the object 1 pivoted (Fig. 4), so arises again Reflective sound field 13 or reflected light 14 by the receiver 8, 10 as a corresponding signal for automatic operation Switch on the heating device 5 is implemented (Fig. 5). The one shown in Figs. 1 to 5 Ultrasonic field 11, 13 and light 12, 14 is only shown schematically and is only intended to function the Explain invention.

In der Fig. 6 ist ein dem Verfahren nach den Fig. 1 bis 5 entsprechendes Flußdiagramm dargestellt. Es bedeutet:101 = Start, 102 = Warmluftstrom auf Object?, 103 = Heizung EIN, 104 = Heizung AUS.FIG. 6 shows the method according to FIGS. 1 to 5 corresponding flowchart shown. It means: 101 = start, 102 = hot air flow on object ?, 103 = heating ON, 104 = heating OFF.

Ein entsprechendes Blockschaltbild zur Durchführung des Verfahrens ist in der Fig. 7 dargestellt. Das von dem Sender 7, 9 abgestrahlte Ultraschallfeld 11 oder Licht 12 wird durch ein Objekt 1 als Reflexultraschallfeld 13 oder Reflexlicht 14 vom Empfänger 8, 10 aufgenommen und von einer Einrichtung 16 in ein Steuersignal umgesetzt, das einer Steuereinrichtung 17 zugeführt wird zum Ein- und Ausschalten der Heizeinrichtung 5.A corresponding block diagram for carrying out the The method is shown in FIG. 7. That from that Transmitter 7, 9 emitted ultrasound field 11 or light 12 is by an object 1 as a reflex ultrasound field 13 or Lens 14 received by the receiver 8, 10 and by a device 16 converted into a control signal that a control device 17 is supplied for input and Switch off the heating device 5.

Das Nichtausschalten des Gebläses 4 beim Ausschalten der Heizeinrichtung 5 hat den Vorteil, daß der Geräuschpegel des Geräts 3 erhalten bleibt. Außerdem beträgt der Energiebedarf für das Gebläse 4 nur ca. 10 % der vom Gerät 3 aufgenommenen Leistung. Der Hauptanteil der aufgenommenen Leistung liegt bei der Heizeinrichtung 5 mit ca 90 %. Wahlweise kann zwischen der Steuersignaleinrichtung 16 und der Steuereinrichtung 17 eine Ausschaltverzögerungseinrichtung 18 vorgesehen werden, um kurzzeitige Schaltspiele zu verhindern. Als Verzögerungszeit können für die Praxis 0,5 ... 4 s vorgesehen werden.Not turning off the blower 4 when Switching off the heating device 5 has the advantage that the Noise level of device 3 is maintained. Furthermore the energy requirement for the blower 4 is only approx. 10% the power consumed by device 3. The main part of the power consumed lies with the heating device 5 about 90%. You can choose between the control signal device 16 and the control device 17 a switch-off delay device 18 to be provided for short-term To prevent switching operations. As a delay time for the practice 0.5 ... 4 s can be provided.

In einem weiteren Ausführungsbeispiel nach den Fig. 8 und 9 arbeitet das Gerät 3 in bezug auf das Objekt 1 entfernungsabhängig, wobei nach dem Ultraschallprinzip die Laufzeit der reflektierten Ultraschallimpulse 13 als Maß für die Erfassung der Entfernung S herangezogen wird. Wird eine vorgegebene Entfernung S zum Objekt 1 überschritten (> S), schaltet sich selbsttätig - wahlweise zeitverzögert - die Heizeinrichtung 5 aus.In a further exemplary embodiment according to FIGS. 8 and 9 the device 3 operates in relation to the object 1 in a distance-dependent manner, the running time according to the ultrasound principle of the reflected ultrasonic pulses 13 as a measure of the Detection of the distance S is used. Will one specified distance S to object 1 exceeded (> S), switches itself - optionally with a time delay - the Heater 5 off.

Ein nach dem Verfahren nach den Fig. 8 und 9 entsprechendes Flußdiagramm ist in der Fig. 10 dargestellt. Es bedeutet:101=Start, 103=Entfernung>S?, 104=Heizung EIN, 105=Heizung AUS. In der Fig. 11 ist ein entsprechendes Blockschaltbild nach der Fig. 10 dargestellt. Die vom Ultraschallsender 7 abgestrahlten Ultraschallimpulse 11 werden vom Ultraschallempfänger 8 als reflektierte Ultraschallimpulse 13 empfangen und die entsprechenden Laufzeiten der Impulse 11 in einer Einrichtung 19 ermittelt und an die Einrichtung 16 zur Steuersignalbildung zugeführt. Wird die vorgegebene Entfernung a nicht überschritten, so geht ein Steuersignal an die Steuereinrichtung 17, die die Heizeinrichtung 5 einschaltet. Wahlweise kann zwischen der Steuersignaleinrichtung 16 und der Steuereinrichtung 17 eine Ausschaltverzögerungseinrichtung 18 vorgesehen werden. Wird nun der Abstand vergrößert (> S) oder das Gerät 3 vom Objekt 1 vorschwenkt (kein Empfang von reflektierten Ultraschallimpulsen 13), so wird von der Abstandsmeßeinrichtung 19 ein entsprechendes Signal an die Steuersignaleinrichtung 16 gegeben, die ein entsprechendes Aus-Signal an die Steuereinrichtung 17 gibt, die die Heizeinrichtung 5 ausschaltet. Wird wieder ein Abstand von ≤ S erreicht, so wird die Heizeinrichtung 5 wieder eingeschaltet.A corresponding according to the method of FIGS. 8 and 9 Flow chart is shown in FIG. 10. It means: 101 = start, 103 = distance> S ?, 104 = heating ON, 105 = heating OFF. A corresponding block diagram is shown in FIG 10. Those emitted by the ultrasonic transmitter 7 Ultrasonic pulses 11 are from the ultrasonic receiver 8 received as reflected ultrasound pulses 13 and the corresponding transit times of the pulses 11 in a device 19 is determined and sent to the device 16 supplied for control signal formation. Will be the default Distance a not exceeded, a control signal goes to the control device 17 which controls the heating device 5 switches on. Optionally can between the control signal device 16 and the control device 17 a switch-off delay device 18 is provided become. If the distance is increased (> S) or device 3 swings forward from object 1 (no reception of reflected ultrasound pulses 13), so the Distance measuring device 19 sends a corresponding signal to the Control signal device 16 given a corresponding Off signal to the control device 17, the heater 5 switches off. Will be back Distance of ≤ S is reached, the heating device 5 switched on again.

Fig. 12 zeigt ein FLußdiagramm, das als Ziffer 20 eine Kombination von Entfernungsmessung und Erfassung eines auf ein Objekt 1 gerichteten Warmluftstroms 2 darstellt (20 : Entfernung ≤ S oder Warmluftstrom auf Objekt?), wobei zur Entfernungsmessung die Laufzeit von Schallimpulsen und zur Erfassung eines auf ein Objekt 1 gerichteten Warmluftstroms 2 das Reflexlichtprinzip eingesetzt werden kann. Es bedeutet:101=Start, 104=Heizung EIN, 105=Heizung AUS. Ein nach der Fig. 12 entsprechendes Blockschaltbild ist in dar Fig. 13 dargestellt, wobei ein kombinierter Sender 7, 9/Empfänger 8, 10 für Schall und Licht vorgesehen ist.FIG. 12 shows a flow chart, which is designated as a number 20 Combination of distance measurement and detection of one represents an object 1 directed hot air flow 2 (20: Distance ≤ S or warm air flow on object?), Where for the distance measurement the transit time of sound impulses and for detecting a warm air flow directed towards an object 1 2 the reflected light principle can be used. It means: 101 = start, 104 = heating ON, 105 = heating OFF. A block diagram corresponding to FIG. 12 is shown in 13 is shown, wherein a combined transmitter 7, 9 / Receiver 8, 10 is provided for sound and light.

In der Fig. 14 ist ein für das Verfahren wirksames, keulenartiges Ultraschallfeld 21 dargestellt. Wird dieses Feld 21 von einem Objekt 1 berührt, so bleibt die Heizeinrichtung 5 eingeschaltet. Je nach Dimensionierung des Durchmessers des keulenartigen Feldes 21 kann auf eine Ausschaltverzögerungseinrichtung 18 verzichtet werden.14 is a club-like one which is effective for the method Ultrasound field 21 shown. If this field becomes 21 touched by an object 1, the heating device 5 remains switched on. Depending on the dimensioning of the diameter of the club-like field 21 can on a switch-off delay device 18 can be dispensed with.

Fig. 15 zeigt einen schematischen Signalverlauf, ob ein Feld 21 nach der Fig. 14 von einem Objekt 1 berührt wird (A) oder nicht (B) und die entsprechenden Signale (C) (D).15 shows a schematic signal curve as to whether a Field 21 according to FIG. 14 is touched by an object 1 (A) or not (B) and the corresponding signals (C) (D).

In der Fig. 16 ist bei einem Gerät 3 zur Erfassung des Abstands S ein Ultraschallwandler 22 vorgesehen, der wechselnd als Schallsender 7 und Schallempfänger 8 arbeitet.16 is in a device 3 for detecting the Distance S an ultrasonic transducer 22 is provided, the alternating works as a sound transmitter 7 and sound receiver 8.

Mit zwei separaten Schallwandlern 22, 23 zur Erfassung des Abstands S ist das Gerät 3 nach der Fig. 17 versehen, wobei der eine Wandler 22 als Ultraschallsender 7 und der andere Wandler 23 als Ultraschallempfänger 8 arbeitet. Bei dieser relativ großen räumlichen Trennung von Sender 7 und Empfänger 8, die neben der Luftstromaustrittsöffnung 6 angeordnet sind, sind vorteilhafterweise auch kurze Objektabstände von z. B. unter 100 mm detektierbar. Außerdem gilt zum Ultraschallprinzip allgemein, daß durch Einstellen einer entsprechenden Empfängerempfindlichkeit und einer entsprechenden Hintergrundausblendung sich auch sehr kleine Objekte 1 (dünne Haarsträhne) detektieren Lassen.With two separate sound transducers 22, 23 for detecting the Distance S is the device 3 shown in FIG. 17, wherein one transducer 22 as an ultrasonic transmitter 7 and the other Transducer 23 works as an ultrasound receiver 8. At this relatively large spatial separation of transmitter 7 and receiver 8, which is arranged next to the airflow outlet opening 6 are advantageously also short object distances from Z. B. detectable below 100 mm. Also applies to the ultrasound principle in general, that by adjusting a corresponding receiver sensitivity and one corresponding background suppression is also very small Have objects 1 (thin strand of hair) detected.

In der Fig. 18 ist die Sender-/Empfängereinheit 7, 9/8, 10 in einem Handgriff 23 des Geräts 3 angeordnet.18 is the transmitter / receiver unit 7, 9/8, 10 arranged in a handle 23 of the device 3.

In der Fig. 19 ist ein separater Sender 7, 9 und Empfänger 8, 10 an einer Ondulierdüse 24 des Geräts 3 angeordnet.19 is a separate transmitter 7, 9 and receiver 8, 10 arranged on an undulating nozzle 24 of the device 3.

Bei dem Ausführungsbeispiel nach der Fig. 20 sind der Sender 7, 9 und der Empfänger 8, 10 innerhalb des Geräts 3 angeordnet, beispielsweise im Hohlraum 25 der Heizeinrichtung 5, wodurch äußerlich keine Veränderung des Geräts 3 zu sehen ist. Durch eine Vordergrundausblendung kann eine Beeinflussung der Messung durch ein Berührungsschutzgitter 26 u. ä. vermieden werden.In the embodiment of FIG. 20 are the Transmitter 7, 9 and receiver 8, 10 within the device 3 arranged, for example in the cavity 25 of the heating device 5, which means no external change to the device 3 see is. With a foreground suppression, a Influence of the measurement by a contact protection grid 26 u. Ä. Avoided.

In einem weiteren Ausführungsbeispiel nach der Fig. 21 ist vorgesehen, eine Sender/Empfängereinheit 7, 9/8, 10 an Geräte nachzurüsten, wobei beispielsweise ein herkömmliches Griffstück 27 durch ein neues Griffstück 28 ausgetauscht ist.In a further exemplary embodiment according to FIG. 21 provided a transmitter / receiver unit 7, 9/8, 10 Retrofit devices, for example a conventional one Handle 27 replaced by a new handle 28 is.

In der Fig. 22 ist bei dem Gerät 3 eine Reflexlichtschranke mit mehreren Lichtsendern 9 und einem Lichtempfänger 10 dargestellt, wobei durch verschiedene Modulationen oder Kodierungen der Lichtstrahlen 14 in einem bestimmten Bereich die Entfernung zwischen Objekt 1 und Luftstromaustrittsöffnung 6 detektiert werden kann. 22 is a reflected light barrier in the device 3 with a plurality of light transmitters 9 and a light receiver 10 shown, being by different modulations or Coding of the light beams 14 in a certain area the distance between object 1 and the airflow outlet 6 can be detected.

Als einfachstes Ausführungsbeispiel ist nach der Fig. 23 ein mechanischer Tastschalter 29 vorgesehen zur entsprechenden Objektabstandsüberwachung, wobei der Tastschalter 29 die Heizeinrichtung 5 ausschaltet, wenn der Abstand a überschritten wird.The simplest embodiment is shown in FIG. 23 a mechanical key switch 29 is provided for the corresponding Object distance monitoring, the push button 29 switches off the heating device 5 when the distance a is exceeded.

Ein besonders schaltsicheres Ausführungsbeispiel ist nach der Fig. 24 dadurch gegeben, daß eine Strahlstrecke 30 durch das Objekt 1 unterbrochen wird, z. B. mittels einer gabelartigen Ausgestaltung 31.A particularly switch-safe embodiment is according to 24 in that a beam path 30 is interrupted by object 1, e.g. B. by means of a fork-like configuration 31.

Als weiteres Ausführungsbeispiel ist nach der Fig. 25 vorgesehen, einen Luftdrucksensor 32 innerhalb des Geräts 3 anzuordnen. Es wird nämlich von der überlegung ausgegangen, daß ein vor der Luftaustrittsöffnung 6 befindliches Objekt 1 die Luftdruckverhältnisse im Innern des Geräts 3 beeinflußt, da ein Beaufschlagen mit einem Warmluftstrom 2 auf ein Objekt 1 eine Luftstromdruckerhöhung und eine Luftstromdruckabsenkung gegenüber dem Zustand des freien Ausblasens zur Folge hat.25 is provided as a further exemplary embodiment, an air pressure sensor 32 within the device 3 to arrange. It is assumed that that an object located in front of the air outlet opening 6 1 influences the air pressure inside the device 3, since exposure to a warm air stream 2 an object 1 an air flow pressure increase and an air flow pressure reduction versus the state of free blowing has the consequence.

In der Fig. 26 ist ein entsprechendes Diagramm nach dem Ausführungsbeispiel nach der Fig. 25 dargestellt, wobei ab einer bestimmten Luftstromdruckhöhe bei Erreichen einer vorbestimmten Schaltschwelle 42 am Schaltpunkt 43 die Heizeinrichtung 5 eingeschaltet wird. Dabei kann vorgesehen werden, den Schaltpunkt 43 so einzustellen, daß der entsprechende Luftdruck L der Entfernung S entspricht und dadurch eine vergleichbare Funktion mit einem keulenartigen Ultraschallfeld 21 nach der Fig. 14 aufweist.26 is a corresponding diagram after the Embodiment shown in FIG. 25, wherein from a certain air flow pressure level when one is reached predetermined switching threshold 42 at switching point 43 Heater 5 is turned on. It can be provided are to set the switching point 43 so that the corresponding air pressure L corresponds to the distance S and thereby a comparable function with a club-like Has ultrasonic field 21 according to FIG. 14.

In einer Weiterbildung der Erfindung ist nach der Fig. 27 vorgesehen, die Abstandsmeßeinrichtung 19 (Fig. 11, 22) zur Ermittlung des Abstands S zwischen einer Luftstromaustrittsöffnung 6 und einem Objekt 1 bzw. einer Objektoberfläche 1 zur Regelung einer Heizleistung P heranzuziehen zwecks Konstanthaltung einer vorgegebenen Luftstromtemperatur auf das Objekt 1, wobei die Regelung der Heizleistung P proportional zum Abstand S des im überwachungsraums 44 befindlichen Objekts 1 erfolgt, wodurch in einem weiten Rahmen eine Temperaturkonstanthaltung unabhängig von dem Abstand S erreicht wird. Bei großem Abstand S ist die Heizleistung P also relativ groß; bei kleinem Abstand S relativ klein (die Heizleistung P ändert sich ungefähr quadratisch zur Entfernung). Der schematisch dargestellte Regelverlauf 45 in der Fig. 27 hält die Temperatur am Objekt 1 bei verändertem Abstand a konstant. Mit einem anderen Regelverlauf 46 ist eine andere Arbeitsweise realisiert, die es erlaubt, besonders haltbare Frisuren ohne Verwendung einer Kaltlufttaste zu erstellen. Dadurch wird eine Konditionierung des Haars in einfacher Weise durch geringes Vergrößern des Abstands a erreicht. Gemäß eines anderen Regelverlaufs 47 kann vorgesehen werden, die Heizleistung Pw bei sehr nah vor der Luftstromaustrittsöffnung 6 befindlichen Objekten 1 wesentlich zu verringern und ganz auszuschalten, wenn kein Objekt 1 sich im überwachungsraum 44 befindet (Haarschonung).In a development of the invention, according to FIG. 27 provided the distance measuring device 19 (Fig. 11, 22) for Determination of the distance S between an airflow outlet opening 6 and an object 1 or an object surface 1 to regulate a heating power P. in order to keep a given constant Airflow temperature on object 1, taking the scheme the heating power P proportional to the distance S of the im monitoring room 44 located object 1, which keeps the temperature constant over a wide range regardless of the distance S is reached. At large distance S, the heating power P is therefore relatively large; at a small distance S relatively small (the heating power P changes approximately square to distance). Of the schematically illustrated control curve 45 in FIG. 27 maintains the temperature at object 1 at a changed distance a constant. With another rule course 46 is another Realized working method that allows particularly durable Create hairstyles without using a cold air button. This makes conditioning the hair easier Way achieved by slightly increasing the distance a. According to another control course 47 can be provided be the heating power Pw at very close to the Airflow outlet opening 6 located objects 1 reduce significantly and switch off completely if none Object 1 is located in the surveillance room 44 (Gentle on the hair).

Eine andere Arbeitsweise ist in der Fig. 28 dargestellt, wobei der Regelverlauf 48 der Heizleistung P proportional zur Größe D des im überwachungsraums 44 befindlichen Objekts 1 erfolgt. Liegt z. B. eine große Haarsträhne vor, so erfolgt eine größere Heizleistung P. Sämtliche Regelungsverläufe 45 bis 48 sind an die entsprechenden Parameter des jeweiligen Geräts 3 anzupassen.Another mode of operation is shown in FIG. 28, the control curve 48 being proportional to the heating power P. to the size D of the object located in the monitoring room 44 1 is done. Is z. B. before a large strand of hair, so there is a greater heating output P. All control processes 45 to 48 are connected to the corresponding parameters of the to adapt each device 3.

Claims (19)

  1. A method of treating an object (1) with a stream of hot air (2) directed at the object (1) by means of a hand-held appliance (3) provided with a fan (4) and a heater (5), wherein a predetermined heat output of the heater (5) is automatically switched off or automatically reduced by the appliance (3) when the hot-air stream (2) flows past the object (1) or a predetermined distance (S) between the object (1) and the appliance (3) is exceeded, and wherein the predetermined heat output of the heater (5) is automatically switched on again when the hot-air stream (2) strikes the object (1) or the distance from the object is less than or equal to the predetermined distance (S), characterised in that the fan (4) remains switched on if the appliance (3) is switched on manually.
  2. A hand-held appliance (3) provided with a fan (4) and a heater (5) for treating an object (1) with a stream of hot air (2) directed at the object (1), wherein the appliance (3) is provided with a means for automatically switching off or automatically reducing a predetermined heat output of the heater (5) when the hot-air stream (2) flows past the object (1) or a predetermined distance (S) between the object (1) and the appliance (3) is exceeded, and wherein the means is provided for automatically switching on the heater (5) or automatically switching over to the predetermined heat output when the hot-air stream (2) strikes the object (1) or the distance from the object is less than or equal to the predetermined distance (S), characterised in that the fan (4) is switched on if the appliance (3) is switched on manually.
  3. A hand-held appliance according to claim 2, characterised in that the first means is provided with a sensor (8, 10, 23, 29, 32) for detecting a hot-air stream (2) flowing past the object (1).
  4. A hand-held appliance according to claim 3, characterised in that the sensor is formed as a reflected-light receiver (10) in combination with a scanning-light transmitter (9) transmitting substantially in the direction of the hot-air stream.
  5. A hand-held appliance according to claim 3, characterised in that the sensor is formed as an ultrasonic reflex receiver (8) in combination with an ultrasonic transmitter (7).
  6. A hand-held appliance according to claim 5, characterised in that the sensor is provided alternately as an ultrasonic reflex transmitter (7) and an ultrasonic receiver (8).
  7. A hand-held appliance according to claim 2, characterised in that the second means is provided with a sensor for detecting a deviation from the predetermined distance (S) between the object (1) and the appliance (3).
  8. A hand-held appliance according to claim 7, characterised in that an ultrasonic transmitter (7) and an ultrasonic receiver (8) provided with the sensor are provided for detecting the distance (S) between the object (1) and the appliance (3).
  9. A hand-held appliance according to claim 8, characterised in that the ultrasonic transmitter (7) is provided alternately as an ultrasonic receiver (8).
  10. A hand-held appliance according to at least one of the preceding claims, characterised in that the ultrasonic transmitter (7)/ ultrasonic receiver (8) system is provided both for detecting a hot-air stream (2) flowing past the object (1) and for detecting a deviation from the predetermined distance (S) between the object (1) and the appliance (3).
  11. A hand-held appliance according to claim 7, characterised in that an air-pressure sensor (32) is provided.
  12. A hand-held appliance according to claim 3 and/or claim 7, characterised in that the sensor is arranged in a handle (23) of the appliance (3).
  13. A hand-held appliance according to claim 3 and/or claim 7, characterised in that the sensor is arranged on a contoured nozzle (24).
  14. A hand-held appliance according to claim 3 and/or claim 7, characterised in that the sensor is arranged inside the appliance (3).
  15. A hand-held appliance according to at least claim 2, characterised in that the first and/or second means is provided with a delay device (18) for switching off or reducing the heat output.
  16. A hand-held appliance according to claim 15, characterised in that 0.5 to 4 s are provided as a delay time.
  17. A method according to at least one of the preceding claims, characterised in that the heat output is controlled (45) in such a manner that the temperature of the hot-air stream (2) directed at the object (1) is constant, irrespective of the distance a.
  18. A method according to at least one of the preceding claims, characterised in that the heat output is controlled (46, 47) in such a manner that the temperature of the hot-air stream (2) is reduced or eliminated altogether in proportion to an increasing distance a.
  19. A method according to at least one of the preceding claims, characterised in that the heat output is increased proportionally as a function of the size (D) of an object (1) to be treated.
EP94909102A 1993-03-02 1994-03-02 Method for treating an object with a stream of hot air, and hand-held appliance for carrying out the method Expired - Lifetime EP0637920B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4306429 1993-03-02
DE4306429A DE4306429A1 (en) 1993-03-02 1993-03-02 Method for treating an object with a warm air flow and hand-held device for carrying out the method
PCT/EP1994/000610 WO1994019982A1 (en) 1993-03-02 1994-03-02 Method for treating an object with a stream of hot air, and hand-held appliance for carrying out the method

Publications (2)

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EP0637920A1 EP0637920A1 (en) 1995-02-15
EP0637920B1 true EP0637920B1 (en) 1999-05-26

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EP94909102A Expired - Lifetime EP0637920B1 (en) 1993-03-02 1994-03-02 Method for treating an object with a stream of hot air, and hand-held appliance for carrying out the method
EP94909103A Expired - Lifetime EP0637921B1 (en) 1993-03-02 1994-03-02 Method for treating an object with a stream of hot air, and a hand-held air-jet drier for carrying out the method

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EP94909103A Expired - Lifetime EP0637921B1 (en) 1993-03-02 1994-03-02 Method for treating an object with a stream of hot air, and a hand-held air-jet drier for carrying out the method

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US (2) US5511322A (en)
EP (2) EP0637920B1 (en)
JP (2) JP3276636B2 (en)
DE (3) DE4306429A1 (en)
WO (2) WO1994019982A1 (en)

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Publication number Publication date
DE59408300D1 (en) 1999-07-01
JP3294275B2 (en) 2002-06-24
JPH07509641A (en) 1995-10-26
WO1994019983A1 (en) 1994-09-15
JPH07506516A (en) 1995-07-20
DE4306429A1 (en) 1994-09-29
EP0637921A1 (en) 1995-02-15
JP3276636B2 (en) 2002-04-22
DE59408201D1 (en) 1999-06-10
US5511322A (en) 1996-04-30
WO1994019982A1 (en) 1994-09-15
EP0637920A1 (en) 1995-02-15
US5560121A (en) 1996-10-01
EP0637921B1 (en) 1999-05-06

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