EP0523794B1 - Bügeleisen mit Bewegungsfühler - Google Patents

Bügeleisen mit Bewegungsfühler Download PDF

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Publication number
EP0523794B1
EP0523794B1 EP92202105A EP92202105A EP0523794B1 EP 0523794 B1 EP0523794 B1 EP 0523794B1 EP 92202105 A EP92202105 A EP 92202105A EP 92202105 A EP92202105 A EP 92202105A EP 0523794 B1 EP0523794 B1 EP 0523794B1
Authority
EP
European Patent Office
Prior art keywords
iron
fabric
detector
electrostatic
movement
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
EP92202105A
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English (en)
French (fr)
Other versions
EP0523794A1 (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 EP0523794A1 publication Critical patent/EP0523794A1/de
Application granted granted Critical
Publication of EP0523794B1 publication Critical patent/EP0523794B1/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 an iron comprising a heating element, means for controlling the heating of the heating element, and a motion detector.
  • An iron can give rise to certain problems when after being switched on it is left stationary on a cloth. Depending on the temperatures reached, the fabric may be damaged. For this, it is useful to provide the iron with a safety device which stops the iron when not in use. This is usually done by determining the movement of the iron using a motion detector.
  • Such a detector is for example described in patent EP 0227150.
  • This detector comprises a magnet mounted at the end of a pendulum which oscillates with the movement imparted to the iron by the user.
  • An electrical signal generated by this movement makes it possible to detect when the iron is in use and consequently when it is not in use.
  • the balance moves substantially in an oscillation plane which is parallel to the axis of movement of the iron which is oriented in the direction of the tip of the soleplate of the iron. A movement perpendicular to this oscillation plane is then not detected. Having moving parts (see DE-A-3 444 348) also constitutes a handicap.
  • the object of the invention is to propose a motion detector for an iron which is inexpensive to manufacture industrially, which is devoid of moving parts and therefore of simple construction.
  • the quantity of electrostatic charges generated on the surface of the fabric by the passage of iron is measured. to iron on the fabric. It is then possible to determine variations in the quantity of electrostatic charges, variations which determine the movement.
  • the sensitivity of the detector can be advantageously reinforced by placing near the detector a plate of insulating material which, by friction with the fabric, generates electrostatic charges on the surface of the fabric.
  • the iron can thus be provided with a member, consisting of an electrically insulating material, which is arranged with the iron to generate by friction electrostatic charges when the iron slides on the fabric.
  • the insulating material can be, for example, Teflon *, glass, enamel, Kapton *. *trademark
  • Such an electrostatic detector is mainly intended to be used for ironing dry fabrics. Indeed, when the fabric is wet, the ability of a fabric to store electrostatic charges decreases. It follows that the electrostatic detector sees its effectiveness decrease when the humidity of the fabric is higher and higher.
  • the passage of the iron over areas which generally do not have the same humidity allows the humidity detector to deliver an electrical signal which varies according to the position of the iron. These variations are used to detect the movement of the iron operating on damp fabrics.
  • the means for measuring the resistivity comprise at least one conductive terminal which is flush with the soleplate of the iron for be brought into contact with the fabric.
  • the humidity detector can further determine an average degree of moisture in the fabric using means for measuring an average amplitude of said other electrical signal.
  • Figure 1 a side view of an example of an iron with an electrostatic detector.
  • Figure 2 two diagrams A, B of an electrostatic detector implementing electrostatic charge measurements.
  • Figure 3 a schematic view of the underside of an iron with a humidity detector and an electrostatic detector.
  • Figure 4 a diagram of an electrical resistivity measurement circuit.
  • Figure 5 curves representing the variations DR of resistance and the variations DQ of electrostatic charges during a drying operation.
  • Figure 6 an example of a curve of variations of an output signal I (d) as a function of displacement.
  • Figure 7 an example of a rhythm measurement circuit.
  • Figure 8 an example of a rhythm and humidity measurement circuit.
  • the electrostatic detector will be arranged with the iron so that it is placed opposite fabric when the iron slides on the fabric.
  • the diagram in FIG. 1 represents an iron 30 provided with an electrostatic detector 35 placed at the rear of the sole 31 of the iron.
  • the electrostatic detector is represented on figure 2.
  • the figure 2-A represents a metal electrode 40 electrically connected to a circuit 41 of electrostatic voltmeter with high impedance.
  • the electrode 40 electrically isolated by an insulating column 46, is placed in a shield 42 so that the measurement is not disturbed.
  • a coaxial connection 43 can be used between the electrode 40 and the circuit 41 of the voltmeter.
  • the electrode 40 is arranged with an iron to be located a short distance from the fabric 45. Thus the quantity of electrostatic charges generated on the surface of the fabric by the moving soleplate of the iron can be measured, by capacitive effect, using the electrode 40.
  • Between the electrode 40 and the fabric 45 appears a capacity C o .
  • the electrical signal appears in the form of a signal whose amplitude varies with the movement of the iron on the fabric.
  • the capacitive bridge is represented on the figure 2-B.
  • V1 electrostatic potential
  • C o and C1 fixed by construction
  • the measurement of V1 makes it possible to determine the electrostatic character of the fabric.
  • comparative values are provided for several types of tissue.
  • the plate 64 can partially or totally surround the electrostatic detector with an L or circular shape.
  • the plate can for example be made of Teflon *, glass, enamel, Kapton *.
  • FIG. 3 represents a schematic view from below of an iron 30 provided with a humidity detector 60 and an electrostatic detector 35.
  • 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.
  • terminals can be mounted on an elastic support 64 to apply well to the fabric without leaving any traces. These terminals are combined with the measurement means which determine the rhythm of the variations in the electrical resistance of the fabric. If said value of electrical resistance is low, the fabric is damp. If said value is high, the fabric is dry. The terminals are placed in housings 63 a , 63 b formed in the support 64.
  • the member to be arranged can be constituted by this support 64 by making it from an electrically insulating material, for example Teflon *, glass, an enamelled sheet, Kapton * .
  • the material must have sufficient temperature resistance to be brought into contact without deteriorating with more or less hot fabrics. So that the electrostatic detector 35 can operate in several directions of sliding of the iron, it is possible that the support 64 partially or completely surrounds the measurement electrode 40.
  • an L or circular shape may be suitable. *trademark
  • FIG. 4 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 89 for measuring the electric current I passing through the circuit.
  • FIG. 5 represents curves of the variations DR of the resistance and of the variations DQ of electrostatic charges during a dehumidification operation for an iron as shown in FIG. 3.
  • the humidity detector 60 encounters increasingly dry parts of fabric (over a length of iron sole).
  • Curves C and D relate to variations DQ of electrostatic charges.
  • Curves A and B relate to the variations DR of electrical resistance. They are provided in arbitrary units. When the resistance becomes high, the amount of electrostatic charges increases in relation to the nature of the fabric. In reality, the tissues never have a constant humidity which causes fluctuations in the signal depending on the movement of the iron.
  • FIG. 6 represents a curve of variation of an output signal I (d) as a function of the displacement d of the iron. It is representative of both a signal from the electrostatic detector and a signal from the humidity detector. The signal is formed by a sequence of alternations having variable amplitudes. To detect movement, the number of signal ascents and / or descents is calculated for a predetermined period. These signal alternations are caused by the movement of the iron.
  • FIG. 7 represents an example of circuit 89 allowing to determine the number of alternations. It comprises a capacitor C3 and a resistor R3 connected to an input of an amplifier 92 with high input impedance. This circuit derives the signal I and supplies 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 zero or very limited number of pulses (for example 1 to 3) has appeared during the 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.
  • the other input of amplifier 92 can be grounded.
  • 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.
  • circuit 89 it is also possible to add to circuit 89 above another circuit 99 which determines the average amplitude of the signal I (d). ( Figure 8). This average value is then representative of the degree of humidity of the fabric.
  • the other circuit 99 comprises a resistor R1 connected by one end to the input terminal 88 for supplying the current I, the other end of this resistor R1 being connected to an amplifier 91 with high input impedance. Between the input and the output of this amplifier 91, an arrangement formed of a capacitor C2 and a resistor R2 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Claims (8)

  1. Bügeleisen mit einem Heizelement (97), Steuerungsmitteln (96) für Heizung des Heizelementes und einem Bewegungsdetektor, dadurch gekennzeichnet, daß der Bewegungsdetektor ein elektrostatischer Detektor (35) ist, der folgendes umfaßt:
    - Mittel (40, 42, 43, 46) zur Aufnahme elektrostatischer Ladungen, die durch Gleiten des Bügeleisens auf einem Stoff entstehen,
    - Mittel (41, 89) zur Detektierung einer Bewegung des Bügeleisens durch Messung eines Rhythmus eines elektrischen Signals, das sich aus der Veränderung der elektrostatischen Ladungen ergibt.
  2. Bügeleisen nach Anspruch 1, dadurch gekennzeichnet, daß das Bügeleisen mit einer Vorrichtung (64) versehen ist, die aus einem elektrisch isolierenden Material besteht, das am Bügeleisen angebracht ist, um durch Reibung elektrostatische Ladungen zu erzeugen, wenn das Bügeleisen über den Stoff gleitet.
  3. Bügeleisen nach Anspruch 2, dadurch gekennzeichnet, daß das isolierende Material aus der folgenden Liste ausgewählt wird: Teflon®, Glas, Emaille, Kapton®.
  4. Bügeleisen nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Vorrichtung (64) den elektrostatischen Detektor ganz oder teilweise umgibt.
  5. Bügeleisen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß es außerdem einen Feuchtigkeitsdetektor (60) umfaßt, der folgendes umfaßt:
    - Mittel (62a, 62b) zur Messung einer Resistivität des Stoffes,
    - Mittel (89, 90) zur Detektierung einer Bewegung des Bügeleisens durch Messung eines Rhythmus eines anderen elektrischen Signals, das aus den Widerstandsveränderungen bedingt durch das Gleiten des Bügeleisens über den Stoff hervorgeht.
  6. Bügeleisen nach Anspruch 5, dadurch gekennzeichnet, daß die Mittel zur Messung der Resistivität wenigstens eine leitende Klemme (62a), (62b) umfassen, die in der Bodenplatte des Bügeleisens liegt, um den Stoff kontaktieren zu können.
  7. Bügeleisen nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Mittel (89) zur Detektierung der Bewegung folgendes umfassen:
    - eine Schaltung zur Differenzierung des elektrischen Signals I,
    - einen Zähler (93), der am Ausgang der Schaltung zur Differenzierung während einer vorbestimmten Zeitdauer eine Anzahl von Impulsen zählt, die entweder das genannte Signal oder das andere Signal charakterisieren, und der die Steuerungsmittel (96) des Bügeleisens abschaltet, wenn die genannte Anzahl von Schwankungen kleiner ist als eine sehr kleine, vorbestimmte Zahl.
  8. Bügeleisen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Feuchtigkeitsdetektor außerdem einen mittleren Feuchtigkeitsgrad des Stoffes mit Hilfe von Mitteln (99) bestimmt, die eine mittlere Amplitude des genannten anderen Signals messen.
EP92202105A 1991-07-19 1992-07-10 Bügeleisen mit Bewegungsfühler Expired - Lifetime EP0523794B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9109133 1991-07-19
FR9109133 1991-07-19

Publications (2)

Publication Number Publication Date
EP0523794A1 EP0523794A1 (de) 1993-01-20
EP0523794B1 true EP0523794B1 (de) 1996-05-15

Family

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Family Applications (1)

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EP92202105A Expired - Lifetime EP0523794B1 (de) 1991-07-19 1992-07-10 Bügeleisen mit Bewegungsfühler

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US (1) US5391859A (de)
EP (1) EP0523794B1 (de)
JP (1) JPH05184799A (de)
BR (1) BR9202669A (de)
DE (1) DE69210697T2 (de)
SG (1) SG44866A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753091B1 (de) * 1995-01-23 2000-05-10 Koninklijke Philips Electronics N.V. Dampfbügeleisen mit wäschetemperatursensor zum steuern der dampfproduktion
JPH08257299A (ja) * 1995-03-08 1996-10-08 Philips Electronics Nv 可動底板付アイロン
US5852279A (en) * 1996-10-02 1998-12-22 Windmere Corporation Clothes iron with automatic shut off system controlled by multiple switches
DE19839730C1 (de) * 1998-09-01 2000-03-30 Gerd Reime Schutzvorrichtung für Bügelgeräte
US6104009A (en) * 1998-12-07 2000-08-15 Hp Intellectual Corp. Electrical appliance having user proximity sensor
AU2003281583A1 (en) * 2002-07-24 2004-02-09 Koninklijke Philips Electronics N.V. Iron with fabric contact detector
EP1869241B1 (de) * 2005-04-07 2018-08-01 Koninklijke Philips N.V. Bügelgerät mit identifikationsmittel zur identifizierung des stofftyps von zu bügelnden artikeln
WO2007135631A2 (en) * 2006-05-16 2007-11-29 Koninklijke Philips Electronics N.V. A soleplate
US8770020B2 (en) * 2008-02-14 2014-07-08 Kingsdown, Inc. Methods and apparatuses for testing a sleep support member
US20100140062A1 (en) 2008-12-09 2010-06-10 Stmicroelectronics, Inc. Protective circuit for an apparatus
US9138038B2 (en) * 2011-05-20 2015-09-22 Spectrum Brands, Inc. Hair styling apparatus having hair-protection function

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
US3956743A (en) * 1973-03-14 1976-05-11 Theodore D. Geiszler Motion detection system
DE2548588C2 (de) * 1975-10-30 1982-07-15 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Bügelmaschine
CH613674A5 (de) * 1977-02-10 1979-10-15 Zellweger Uster Ag
DE3444348A1 (de) * 1984-12-05 1986-06-12 Diehl Gmbh & Co Vorrichtung fuer elektrische buegeleisen mit einer vorzugsweise netzbetriebenen heizeinrichtung
US4757825A (en) * 1985-10-31 1988-07-19 Diamond Research Group, Inc. Cardio-pulmonary activity monitor

Also Published As

Publication number Publication date
US5391859A (en) 1995-02-21
EP0523794A1 (de) 1993-01-20
SG44866A1 (en) 1997-12-19
DE69210697D1 (de) 1996-06-20
JPH05184799A (ja) 1993-07-27
DE69210697T2 (de) 1996-11-28
BR9202669A (pt) 1993-03-23

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