DE2535853A1 - Hair drier or clothes drier with electric motor and heating resistor - gives thermostatic control within narrow limits according to room temperature - Google Patents

Hair drier or clothes drier with electric motor and heating resistor - gives thermostatic control within narrow limits according to room temperature

Info

Publication number
DE2535853A1
DE2535853A1 DE19752535853 DE2535853A DE2535853A1 DE 2535853 A1 DE2535853 A1 DE 2535853A1 DE 19752535853 DE19752535853 DE 19752535853 DE 2535853 A DE2535853 A DE 2535853A DE 2535853 A1 DE2535853 A1 DE 2535853A1
Authority
DE
Germany
Prior art keywords
fan
heating resistor
drier
temp
electric motor
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.)
Ceased
Application number
DE19752535853
Other languages
German (de)
Other versions
DE2535853B2 (en
Inventor
Erich Baumgartner
Peter Dipl Kfm Doehler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to DE19752535853 priority Critical patent/DE2535853B2/en
Publication of DE2535853A1 publication Critical patent/DE2535853A1/en
Publication of DE2535853B2 publication Critical patent/DE2535853B2/en
Ceased legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48Drying by means of hot air
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00Hair drying devices; Accessories therefor
    • A45D20/04Hot-air producers
    • A45D20/08Hot-air producers heated electrically
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00Hair drying devices; Accessories therefor
    • A45D20/04Hot-air producers
    • A45D20/08Hot-air producers heated electrically
    • A45D20/10Hand-held drying devices, e.g. air douches
    • A45D20/12Details thereof or accessories therefor, e.g. nozzles, stands

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Cleaning And Drying Hair (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

Hair drier or clothes drier or other hot air blower for personal care comprises a heating resistor disposed in the path of air from the fan, and an electric motor for driving the fan rotor. In the path of hot air coming from the fan is a first temp. sensor (NTC, PTC, metal-film resistor, thermoelement, etc.), and on the housing of the fan unit is a second temp. sensor around which ambient air circulates. The two temp. sensors together control the output of the heating resistor via a control component with an electric switch e.g. an operational amplifier, by varying the pulse-interval ratio automatically in dependence on the respectively actual value. The arrangement allows thermostatic control within narrow limits according to room air temp.

Description

Lüfteraggregat, insbesondere Heißlufdusche Die Erfindung betrifft ein Lüfteraggregat, insbesondere Heißluftdusche, mit einem im Luftstrom des Gebläses angeordneten Heizwiderstand und einem den Gebläschläufer antreibenden Elektromotor.Fan unit, in particular hot air shower The invention relates to a fan unit, in particular a hot air shower, with one in the air flow of the blower arranged heating resistor and an electric motor driving the fan.

Bei Geraten des persönlichen Bedarfs (personal care), die it einem Heizgebläse ausgestattet sind, ist es bekannt, einen Temperaturfühler im Heißluftstrom vorzusehen, der dafür Sorge @rägt, daß die Stromzufuhr zum elektr.ischen Heizwiderstand immer dann unterbrochen wird, wenn entweder die Gefahr gegeben ist, daß das Aggregat selbst Schaden nehmen könnte, der aber wenn die Gefahr b-esteht, daß die Kopfhaut oder d.ie Kopfhaare vom austretenden Heißluftstrom unzulässig stark erwärmt werden. For personal care devices, it is one Fan heaters are equipped, it is known to have a temperature sensor in the hot air stream to ensure that the power supply to the electrical heating resistor is always interrupted when either there is a risk that the unit itself could be harmed, but if there is a risk that the scalp or d. the scalp hair is heated to an inadmissible degree by the escaping hot air stream.

Ein Nachteil der bekannten Heißluftgebläse besteht darin, daX die Grenzen, in denen eine Regelung der Heizung (Ist-Wert) selbsttätig stattfindet, weit auseinander liegen; praktisch bedeutet dies, daß es nicht auszuschließen ist, daß beim Trocknen der Kopfhaare diese überheizt und stark beschädigt werden. A disadvantage of the known hot air gun is that the Limits within which heating control (actual value) takes place automatically, be far apart; in practice this means that it cannot be ruled out that when the scalp hair is dried, it is overheated and severely damaged.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Heizung derartiger Geräte in engen Grenzen zu überwachen und zwdr unter Berücksichtigung der Raumlufttemperatur. The present invention is based on the object of the heater such devices to monitor within narrow limits and zwdr taking into account the room air temperature.

Erfindungsgemäß geschieht dies dadurch, daß im Heißluftstrom des Gebläses ein I Temperaturfühler und am Gehäuse des Lüfteraggregats ein von der Umgebungsluft umspülter II. Temperaturfühler angeordnet sind, wobei beiae gemeinsam übey einen nachgeschalteten Regelbaustein mit elektrischem Schalter die abgegebene Leistung der Heizung durch Veränderung des Puls-Pause-Verhältnisses selbsttätig in Abhängigkeit vom jeweiligen Ist-Wert beeinflussen. According to the invention this is done in that the hot air stream of the Fan I a temperature sensor and on the housing of the fan unit one of the ambient air circulated II. temperature sensors are arranged, with beiae common übey one downstream control module with electrical switch controls the output the heating by changing the pulse-pause ratio automatically in dependence influence from the respective actual value.

Der II. Temperaturfühler ist mit Vorteil so am Gehäuse des Geräts plaziert, daß er vom lieißluftstron direkt nicht beeinflußt wird. Bei einem llandhaartrockner.der in Frage stehenden Art könnte der II. Temperaturfühler am freien Ende des Handgriffs vorgesehen sein, während der I. Temperaturfühler in bekannter Weise unmittelbar an der Luftaustrittsdüse angeordnet ist. The second temperature sensor is advantageously on the housing of the device placed so that it is not directly influenced by the Lieißluftstron. With an inland hair dryer in question standing type could the II. temperature sensor at the free End of the handle may be provided while the I. temperature sensor in known Way is arranged directly on the air outlet nozzle.

Die Erfindung läßt die verschiedensten Ausführungsmöglichkeiten zu, eine davon ist, in der anhängenden Zeichnung in Form eines Schaltbildes für ein elektrisches Hand-Haartrockengerät mit Wechselstromanschluß dargestellt.The invention allows a wide variety of design options, one of them is, in the attached drawing in the form of a circuit diagram for a electric hand-held hair dryer with AC connection shown.

Das (nicht näher dargestellte) Lüfteraggregat weist zwei IIeizungszweige (einer elektrischen Widerstandsheizung) auf, von denen der (größer bemessene) Leistungszweig mit 1 und der Versorgungszweig mit 2 bezeichnet ist. Im Versorgungszweig2 sind bei 3 und 4 (nach Art der Vorrichtung gemäß DAS 1 540 747) die Stromabgriffe für den Gebläsemotor 5 vorgesehen. Der Leistungszweig 1 der Heizung wfrd also dadurch beeinflußt, daR dieStronstärke durch- - Variation der Anschnittswinkel der Sinushalbwellen geregelt wird . Der iiber die Leitung 7 fließende Steuerstrom wird von einem Regelbaustein 8 mit elektronischem Schalter geliefert; in dessen Stromkreis zwei Temperaturfühler eingeschaltet sind, von denen der eine Temperaturfühler 9 im Heißluftstrom des Gebläses liegt und di;, andere Temperaturfühler 10 von der Umgebungsluft umspült (beeinflußt) wird. Beide Temperaturfühler 9,10 sind in Reihe geschaltet und werden vom Niederspannungserzeuger 11 mit Strom versorgt. Verändert sich die Summe der elektrischen Widerstände dEr beiden Temperaturftihler 9,10, so reagiert der nachgeschaltete Regelbaustein 8 und steuert den Triac 6 an. 'Mit Hilfe. des Temperaturstellers 12 kann der Stromdurchgang durch die Temperaturfühler 9,10 abgestimmt werden. Als Temperaturfühler sind alle temperaturabhängigen Widerstände, also Heißleiter, Kaltleiter Metallschichtwiderstände oder Thetnoelemente verwendbar. Als Regelbaustein 8 findet ein handetsüblicher O-Durchgangsschalter (oder ein Operationsverstärker) Verwendung.The fan assembly (not shown in more detail) has two heating branches (an electrical resistance heater), of which the (larger) power branch with 1 and the supply branch with 2 is designated. In the supply branch2 are at 3 and 4 (according to the type of device according to DAS 1 540 747) the current taps for the Fan motor 5 is provided. The power branch 1 of the heating is thus influenced by because the strength of the current is controlled by varying the angle of the sine half-waves will . The control current flowing via line 7 is controlled by a control module 8 supplied with electronic switch; two temperature sensors in its circuit are switched on, one of which is a temperature sensor 9 in the hot air flow of the fan lies and di ;, other temperature sensors 10 surrounded by the ambient air (influenced) will. Both temperature sensors 9, 10 are connected in series and are from the low-voltage generator 11 powered. If the sum of the electrical resistances dEr changes two temperature sensors 9,10, then the downstream control module 8 and reacts controls the triac 6. 'With help. of the temperature controller 12 can pass the current be matched by the temperature sensors 9,10. As temperature sensors are all temperature-dependent resistances, i.e. NTC thermistors, PTC thermistors Metal film resistors or thetno elements can be used. A standard O-passage switch is used as the control module 8 (or an op amp) use.

Die beschriebene Schaltung ist ohne wesentliche Anderung bei allen eraten des persönlichen Bedarfs verwendbar, bei denen es darauf ankommt, die Temperatur eines Heißluftstroms vergleichsweise genau einzuhalten, bzw. zu regeln. Dies kann z.B..der Fall sein bei Trockenhauben, Hand-Haartrocknern und.The circuit described is without significant change in all Personal needs, which depend on the temperature, can be used of a hot air flow to be observed or regulated comparatively precisely. This can E.g. the case with dryer hoods, handheld hair dryers and.

Wäschetrocknern.Clothes dryers.

Claims (1)

PatentanspruchClaim Lüfteraggregat, insbesondere Heißluftdusche mit einem im Luftstrom des Gebläses angeordneten Heizwiderstand und einem den Gebläseläufer antreibenden Elektromotor, a a d u r c h g e -k e n n z e i c h n e t , daß im Heißluftstrom des Gebläses ein 1. Temperaturfühler (9) (NTC, PTC, Metallschichtwiderstand, Thermoelement oder dergl.) und am Gehäuse des Lüfteraggregats ein von der Umgebungsluft umspülter II Temperaturfühler (10) angeordnet sind> wobei beide gemeinsam über einen nachgeschalteten Regelbaustein mit elektronischem Schalter (8) (z.B. ein O-Durchgangsschalter oder ein Operationsverstärker) dle abgegebene Leistung der Heizung (1) durch Veränderung des Puls-Pause-Verhältnisses selbsttätig in Abhängigknit vom jeweiligen Ist-Wert beeinflussen.Fan unit, in particular hot air shower with one in the air stream of the fan arranged heating resistor and a fan driving the fan Electric motor, a a d u r c h g e -k e n n n z e i c h n e t that in the hot air stream of the fan a 1. temperature sensor (9) (NTC, PTC, metal film resistor, thermocouple or the like.) and on the housing of the fan unit a bathed by the ambient air II temperature sensors (10) are arranged> both together via a downstream Control module with electronic switch (8) (e.g. an O-through switch or an operational amplifier) the output of the heater (1) through change of the pulse-pause ratio automatically depending on the respective actual value influence. L e e r s e i t eL e r s e i t e
DE19752535853 1975-08-12 1975-08-12 FAN UNIT, IN PARTICULAR HOT-AIR SHOWER Ceased DE2535853B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752535853 DE2535853B2 (en) 1975-08-12 1975-08-12 FAN UNIT, IN PARTICULAR HOT-AIR SHOWER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752535853 DE2535853B2 (en) 1975-08-12 1975-08-12 FAN UNIT, IN PARTICULAR HOT-AIR SHOWER

Publications (2)

Publication Number Publication Date
DE2535853A1 true DE2535853A1 (en) 1977-02-24
DE2535853B2 DE2535853B2 (en) 1977-09-08

Family

ID=5953776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752535853 Ceased DE2535853B2 (en) 1975-08-12 1975-08-12 FAN UNIT, IN PARTICULAR HOT-AIR SHOWER

Country Status (1)

Country Link
DE (1) DE2535853B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813144A1 (en) * 1977-03-24 1978-10-05 Thorn Domestic Appliances Ltd DRYERS, IN PARTICULAR FOR CLOTHING
DE2751833A1 (en) * 1977-11-19 1979-05-23 Braun Ag ELECTRIC HAIR DRYER WITH FAN AND HEATING
WO1994019983A1 (en) * 1993-03-02 1994-09-15 Wella Aktiengesellschaft Method for treating an object with a stream of hot air, and a hand-held air-jet drier for carrying out the method
CN104257315A (en) * 2014-09-12 2015-01-07 成都威邦科技有限公司 Infrared automatic hand drier circuit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749231A1 (en) * 1977-11-03 1979-05-10 Otto Huebner Electrical hair care implement - has heat recorder with two thermostats of different sensitivity with air turbulence device
US4411030A (en) * 1980-10-16 1983-10-25 Aisin Seiki Kabushiki Kaisha Apparatus for drying genitals and the posterior parts of human body
US4424437A (en) * 1981-02-24 1984-01-03 Clairol Incorporated Hair dryer with remote sensing temperature control
DE3729774A1 (en) * 1987-09-05 1989-03-16 Krups Stiftung ELECTRICALLY POWERED HAND HAIR DRYER

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813144A1 (en) * 1977-03-24 1978-10-05 Thorn Domestic Appliances Ltd DRYERS, IN PARTICULAR FOR CLOTHING
DE2751833A1 (en) * 1977-11-19 1979-05-23 Braun Ag ELECTRIC HAIR DRYER WITH FAN AND HEATING
FR2409024A1 (en) * 1977-11-19 1979-06-15 Braun Ag ELECTRIC HAIRDRYER INCLUDING A FAN AND A HEATING SYSTEM
WO1994019983A1 (en) * 1993-03-02 1994-09-15 Wella Aktiengesellschaft Method for treating an object with a stream of hot air, and a hand-held air-jet drier for carrying out the method
US5511322A (en) * 1993-03-02 1996-04-30 Wella Aktiengesellschaft Process for treatment of an object using a flow of hot air and hand-held air blower for carrying out this process
CN104257315A (en) * 2014-09-12 2015-01-07 成都威邦科技有限公司 Infrared automatic hand drier circuit
CN104257315B (en) * 2014-09-12 2016-11-30 成都威邦科技有限公司 A kind of infrared ray automatic hand dryer circuit
CN104257315B8 (en) * 2014-09-12 2017-03-22 青岛玉兰祥商务服务有限公司 Infrared automatic hand drier circuit

Also Published As

Publication number Publication date
DE2535853B2 (en) 1977-09-08

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