EP0523795B1 - Bügeleisen mit Feuchtigkeitsfühler - Google Patents

Bügeleisen mit Feuchtigkeitsfühler Download PDF

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Publication number
EP0523795B1
EP0523795B1 EP92202106A EP92202106A EP0523795B1 EP 0523795 B1 EP0523795 B1 EP 0523795B1 EP 92202106 A EP92202106 A EP 92202106A EP 92202106 A EP92202106 A EP 92202106A EP 0523795 B1 EP0523795 B1 EP 0523795B1
Authority
EP
European Patent Office
Prior art keywords
iron
fabric
signal
measuring
heating
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
Application number
EP92202106A
Other languages
English (en)
French (fr)
Other versions
EP0523795A1 (de
Inventor
Jean-Pierre Société Civile S.P.I.D. Hazan
Rémy Société Civile S.P.I.D. Polaert
Jean-Louis Société Civile S.P.I.D. Nagel
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.)
Laboratoires dElectronique Philips SAS
Koninklijke Philips NV
Original Assignee
Laboratoires dElectronique Philips SAS
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Laboratoires dElectronique Philips SAS, Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Laboratoires dElectronique Philips SAS
Publication of EP0523795A1 publication Critical patent/EP0523795A1/de
Application granted granted Critical
Publication of EP0523795B1 publication Critical patent/EP0523795B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements

Definitions

  • the invention relates to a domestic iron comprising a heating element, means for controlling the heating of the heating element and a substantially flat soleplate intended to slide on a fabric.
  • the ironing conditions of a fabric can be very dependent on the state of humidity of the fabric. It is indeed known that ironing a damp fabric begins with a prior step of dehumidifying the fabric.
  • the electric power dissipated in the heating element can in some cases of thermostat settings be low which lengthens the duration of this dehumidification step. This results in ironing times which are abnormally long.
  • the object of the invention is to provide a humidity detector for domestic irons which is inexpensive to manufacture industrially, an essential condition for such mass-market equipment, and which can be easily used to control the dissipated electrical power.
  • the means for measuring the resistivity comprise at least one conductive terminal which is flush with the soleplate of the iron so that it can be brought into contact with the fabric.
  • the electrical resistance between two terminals is measured using an appropriate assembly.
  • a low value of electrical resistance is characteristic of a damp fabric.
  • a high value of electrical resistance is characteristic of a dry fabric.
  • the humidity detector Passing the iron over areas that have not generally not the same humidity allows the humidity detector to deliver an electrical signal which varies according to the position of the iron on the fabric.
  • an average value of the electrical signal I is calculated.
  • the humidity detector can thus additionally provide an indication of movement.
  • Figure 1 a side view of an example of an iron with a humidity detector.
  • Figure 2 a schematic view of the underside of an iron with a humidity detector.
  • Figure 3 a diagram of an electrical measurement circuit.
  • Figure 4 a curve representing the DR resistance variations during a drying operation.
  • Figure 5 an example of a variation curve of an output signal I (d) as a function of displacement d.
  • Figure 6 an example of a circuit for measuring an average amplitude of signal I.
  • Figure 7 an example of a measurement circuit of average amplitude and rate of variation of signal I.
  • FIG. 1 represents an iron 30 provided with a humidity detector 60 placed at the rear of the sole 31 of the iron.
  • FIG. 2 represents a diagrammatic view from below of an iron 30 provided with a humidity detector 60.
  • the humidity detector 60 comprises two terminals 62 a , 62 b which preferably have a rounded shape, hemispherical for example , to be able to slide easily on the fabric. Terminals from 5 mm to 10 mm in diameter, for example made of stainless steel, are suitable. These terminals can be mounted on an elastic support 64 to apply well to the fabric without leaving traces. These terminals are combined with the means which determine the average amplitude of signal I.
  • the terminals are placed in housings 63 a , 63 b formed in the support 64.
  • the material of the support must have sufficient temperature resistance to be brought into contact without deteriorating with more or less hot fabrics.
  • FIG. 3 represents a diagram of an electrical circuit for measuring the resistivity.
  • the terminals 62 a , 62 b which are in contact with the fabric 45, are connected to an electrical supply 90 and to a circuit for measuring the electrical current I passing through the circuit.
  • FIG. 4 represents a curve of the variations DR of the resistance during a dehumidification operation for an iron as shown in FIG. 2.
  • the humidity detector 60 encounters increasingly dry parts of fabric (over a length of iron soleplate).
  • a curve A is then observed as a function of the degree s of drying. It is provided in arbitrary units.
  • FIG. 5 represents a curve of variation of an output signal I as a function of the displacement d of the iron. It is representative of a signal from the humidity detector. The signal is formed by a sequence of alternations having variable amplitudes. To detect the humidity level, the average value of this signal is calculated over a determined period.
  • FIG. 6 represents a circuit 99 which determines the average amplitude of the signal I (d). This average value is then representative of the degree of humidity of the fabric.
  • the circuit 99 includes a resistor R 1 connected to the input terminal 88 for supplying the current I. The other end of this resistor R 1 is connected to an input of an amplifier 91 with high input impedance. Between the input and the output of this amplifier 91, an arrangement formed of a capacitor C 2 and a resistor R 2 has been arranged in parallel. On exit 95 a signal representing the average humidity level of the fabric thus appears. This signal can then be used to act on the means 96 for controlling the iron to, for example, increase the electrical power dissipated in the heating element 97 to accelerate the speed of dehumidification of the fabric.
  • the other entry of the amplifier 91 can be grounded. In this case, the soleplate of the iron can replace the terminal 62 b .
  • the humidity detector then comprises a terminal 62 a and the sole 31 as a second terminal.
  • FIG. 7 represents a circuit making it possible to determine the degree of humidity by measuring an average amplitude (branch 99) and to detect a use of the iron by measuring a number of alternations (branch 89).
  • the branch 89 comprises a capacitor C 3 and a resistor R 3 connected to an input of an amplifier 92 with high input impedance to derive the signal I and supply pulses at each rising and falling edge of the signal. These pulses are then counted in a counter 93 which delivers on an output 94 a signal S when a limited number of pulses (for example 1 to 3) has appeared during a predetermined duration. This signal S is then used to act on the means 96 for controlling the iron in order to stop the heating of the heating element 97.
  • a limited number of pulses for example 1 to 3

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Control Of Resistance Heating (AREA)
  • Irons (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Claims (5)

  1. Haushalts-Bügeleisen mit einem Heizelement (97), Heizungssteuermitteln (96) für das Heizelement und mit einer nahezu flachen Sohlenplatte (31) zum Gleiten über Gewebe, dadurch gekennzeichnet, daß das Bügeleisen mit einem Feuchtigkeitsdetektor (60) versehen ist, der die nachfolgenden Elemente aufweist:
    - Mittel (62a, 62b) zum Messen einer Widerstandsfähigkeit des Gewebes, wobei diese Mittel gegenüber der Sohlenplatte fluchtend liegen, damit sie mit dem Gewebe in Kontakt gelangen können,
    - Mittel (99) zum Ermitteln eines Mittelwertes der Feuchtigkeit des Gewebes durch Messung einer mittleren Amplitude eines elektrischen Signals während einer vorbestimmten Zeit, das sich aus Änderungen der Widerstandsfähigkeit ergibt, die durch eine Bewegung des Bügeleisens über das Geweben verursacht werden wobei dieses Signal dazu benutzt wird, die Heizungsregelmittel (96) zu beeinflußen.
  2. Bügeleisen nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zum Messen der Widerstandsfähigkeit wenigstens eine Elektrode (62a), (62b) aufweisen.
  3. Bügeleisen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mittel (99) zum Ermitteln des Mittelwertes des Feuchtigkeitsgrades einen Verstärker mit einer hohen Eingangsimpedanz aufweisen, wobei dieser Verstärker das Signal (I) erhält und einen Eingang sowie einen Ausgang aufweist, die durch einen Rückkopplungswiderstand miteinander verbunden sind.
  4. Bügeleisen nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß es Mittel (89) aufweist zum Detektieren der Bewegung des Bügeleisen durch Messung eines Taktes der Schwankungen des genannten elektrischen Signals.
  5. Bügeleisen nach Anspruch 4, dadurch gekennzeichnet, daß die Mittel (89) zum Bestimmen der Bewegung die folgenden Elemente aufweisen:
    - eine Differenzschaltung für das elektrische Signal I und,
    - einen Zähler (93), der eine Anzahl Impulse mißt, die an dem Ausgang der Differenzschaltung erscheinen und welche die Regelmittel des Bügeleisens abschalten, wenn diese Anzahl Impulse eine sehr geringe vorbestimmte Anzahl unterschreitet.
EP92202106A 1991-07-19 1992-07-10 Bügeleisen mit Feuchtigkeitsfühler Expired - Lifetime EP0523795B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9109132 1991-07-19
FR9109132 1991-07-19

Publications (2)

Publication Number Publication Date
EP0523795A1 EP0523795A1 (de) 1993-01-20
EP0523795B1 true EP0523795B1 (de) 1997-01-08

Family

ID=9415297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92202106A Expired - Lifetime EP0523795B1 (de) 1991-07-19 1992-07-10 Bügeleisen mit Feuchtigkeitsfühler

Country Status (6)

Country Link
US (1) US5349160A (de)
EP (1) EP0523795B1 (de)
JP (1) JP3159790B2 (de)
BR (1) BR9202668A (de)
DE (1) DE69216493T2 (de)
SG (1) SG48406A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315800A1 (de) * 1993-05-13 1994-11-24 Knorr Wilfried Vorrichtung zur Beaufschlagung von Textilien u. dgl. mit Fluiden, insbesondere Bügelgerät
USD381151S (en) * 1996-04-15 1997-07-15 Yu-Yuan Lin Electric iron
USD381152S (en) * 1996-04-15 1997-07-15 Yu-Yuan Lin Electric iron
US5829175A (en) * 1996-09-20 1998-11-03 Black & Decker Inc. Steam iron with all temperature steam production
US5852279A (en) * 1996-10-02 1998-12-22 Windmere Corporation Clothes iron with automatic shut off system controlled by multiple switches
AU135957S (en) * 1998-01-31 1998-12-02 Rowenta Werke Gmbh Steam iron
US6104009A (en) * 1998-12-07 2000-08-15 Hp Intellectual Corp. Electrical appliance having user proximity sensor
US9138038B2 (en) * 2011-05-20 2015-09-22 Spectrum Brands, Inc. Hair styling apparatus having hair-protection function
EP3379970A1 (de) * 2015-11-25 2018-10-03 Koninklijke Philips N.V. Haarstylingvorrichtung
TR201712570A2 (tr) * 2017-08-23 2019-03-21 Arcelik As Bi̇r portati̇f temi̇zli̇k ci̇hazi
EP3502345A1 (de) * 2017-12-22 2019-06-26 Koninklijke Philips N.V. Textilbehandlungsvorrichtung und tragbare vorrichtung zum erhalt einer klassifizierung eine textilie

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22527E (en) * 1938-01-29 1944-08-15 Control op power actuated
US2313918A (en) * 1938-12-13 1943-03-16 Brownlee Henry Herbertson Controlling mechanism for ironing machines
US2395787A (en) * 1939-09-28 1946-02-26 Prosperity Co Inc Machine and humidity responsive control therefor
US3040807A (en) * 1959-11-04 1962-06-26 Industrial Nucleonics Corp Moisture balance correction system
DE2421431C2 (de) * 1974-05-03 1983-01-05 Wilh. Cordes Kg Maschinenfabrik, 4740 Oelde Bügelmaschine
DE2548588C2 (de) * 1975-10-30 1982-07-15 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Bügelmaschine
US4877042A (en) * 1983-09-19 1989-10-31 Downey John H Dynamic hair grooming appliance
DE3444348A1 (de) * 1984-12-05 1986-06-12 Diehl Gmbh & Co Vorrichtung fuer elektrische buegeleisen mit einer vorzugsweise netzbetriebenen heizeinrichtung

Also Published As

Publication number Publication date
EP0523795A1 (de) 1993-01-20
DE69216493T2 (de) 1997-07-03
DE69216493D1 (de) 1997-02-20
US5349160A (en) 1994-09-20
JPH05237297A (ja) 1993-09-17
SG48406A1 (en) 1998-04-17
BR9202668A (pt) 1993-03-23
JP3159790B2 (ja) 2001-04-23

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