EP2002050B1 - Dampfbügeleisen mit verkalkungsanzeige - Google Patents

Dampfbügeleisen mit verkalkungsanzeige Download PDF

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Publication number
EP2002050B1
EP2002050B1 EP07733962A EP07733962A EP2002050B1 EP 2002050 B1 EP2002050 B1 EP 2002050B1 EP 07733962 A EP07733962 A EP 07733962A EP 07733962 A EP07733962 A EP 07733962A EP 2002050 B1 EP2002050 B1 EP 2002050B1
Authority
EP
European Patent Office
Prior art keywords
iron
thermostat
scaling indicator
heater
energy consumed
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.)
Not-in-force
Application number
EP07733962A
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English (en)
French (fr)
Other versions
EP2002050A1 (de
Inventor
Marcus-Christian Wiedemann
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.)
Rowenta Werke GmbH
Original Assignee
Rowenta Werke GmbH
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Filing date
Publication date
Application filed by Rowenta Werke GmbH filed Critical Rowenta Werke GmbH
Publication of EP2002050A1 publication Critical patent/EP2002050A1/de
Application granted granted Critical
Publication of EP2002050B1 publication Critical patent/EP2002050B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator
    • 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 present invention relates to a steam iron comprising a heating body provided with a vaporization chamber and relates more particularly to an iron with a scaling indicator to alert the user to the need for perform a maintenance operation.
  • a steam iron provided with a vaporization chamber fed by a pump in which a scaling indicator is activated after a predetermined use time of the iron, the latter comprising means for measuring the accumulated use time of the steam iron.
  • the scaling indicator is activated only after a predetermined time of operation of the pump so as to have a better accuracy on the scaling state of the iron.
  • Such an indicator of scaling has the advantage of regularly encouraging the user to perform a self-cleaning operation of the iron to remove scale particles accumulated in the steam chamber.
  • the following invention aims to overcome these disadvantages by providing a steam iron with a scaling indicator in which the indicator is activated by means of an activation method that can be used on the simplest steam irons and to obtain a better match between the actual state of scaling iron and the activation of the scaling indicator while remaining simple and economical to achieve.
  • a steam iron comprising a scaling indicator and comprising a heating body comprising a vaporization chamber for the production of steam, characterized in that it comprises means for calculating an electrical energy. consumed by the iron and means for activating said scaling indicator when the calculated energy exceeds a previously determined threshold.
  • Such an iron in which the activation of the scaling indicator is based on the calculation of energy consumed, provides a better estimate of the scaling state of iron. Indeed, in a steam iron by means of a steam chamber, most of the energy consumed is spent during the vaporization of the water.
  • the heating body comprises an electric heating resistor whose operation is regulated by a thermostat and the iron comprises means for measuring the accumulated time during which the thermostat electrically supplies the heating resistor.
  • the means for measuring the cumulative operating time of the heating resistor are integrated in an electronic circuit controlling the activation of the scaling indicator, this electronic circuit receiving from the thermostat the relative information. whether the heating resistor is powered or not.
  • the iron comprises means for calculating the amount of energy consumed by the heating resistor, the scaling indicator being activated when the amount of energy consumed by the heating resistor exceeds a threshold previously determined.
  • the iron comprises means for calculating the amount of energy consumed to produce steam and the scaling indicator is activated when said quantity of energy consumed for the vaporization exceeds a threshold previously determined.
  • the energy consumed to produce steam is calculated by subtracting, from the energy consumed by the heating resistor, an estimate of the energy required for the heating. Dry ironing of a textile at the set temperature of the thermostat.
  • the energy required for the dry ironing of a textile at the thermostat control temperature is estimated by integrating over time a standard power required for the dry ironing of a textile at the thermostat setting temperature, the value of this power being determined from values stored in a memory of the electronic circuit.
  • the activation threshold of the scaling indicator is modulated according to the degree of hardness of the water introduced into the vaporization chamber which is indicated by the user.
  • the iron comprises a button whose actuation allows, when the scaling indicator is activated, to reset the calculation of the electrical energy consumed.
  • the reset button is also a self-cleaning button causing the sudden arrival of a large amount of water in the vaporization chamber
  • Iron represented schematically in figure 1 , comprises a housing 1 disposed above a sole plate 2 provided with steam outlet holes, not shown in the figure.
  • the sole 2 is in thermal connection with a heating body 3 comprising a vaporization chamber 30 conventionally closed by a plate 4.
  • the heating body 3 comprises a heating resistor 31 powered by a thermostat 6 in thermal relation with the heating body, the thermostat 6 ensuring the regulation of the temperature of the sole 2 around a set temperature defined by the user by means of a button 60.
  • the iron is connected to the electrical network by a cord 5.
  • the housing 1 contains a water tank 8 provided with a filling orifice 8a opening on the front face of the iron and comprises a device 9 which drips a passage of water from the tank 8 to the vaporization chamber 30, this device typically having an orifice whose section can be reduced by a needle.
  • the latter includes a scaling indicator consisting of a light 10 which is activated by an electronic circuit 11.
  • This electronic circuit 11 is advantageously supplied with electricity by the electricity network when the cord 5 of the steam iron is connected to the network.
  • the electronic circuit 11 is connected to the thermostat 6 and receives from the latter the information relating to the power supply periods of the heating resistor 31.
  • the electronic circuit 11 contains a microprocessor which measures the electrical energy consumed by the heating resistor 31 since the first use of the iron. This measurement is advantageously carried out by integrating over time the power of the heating resistor 31, which is for example of the order of 2000 W, during the operating time of the heating resistor 31, this operating time being determined directly from thermostat closing time 6.
  • the accumulation of the energy consumed is recorded in a memory of the electronic circuit 11, preferably a non-volatile memory such as a flash memory or EEPROM.
  • the electronic circuit 11 may also include an autonomous power supply device, such as a battery or a capacitor, for storing the data in memory when the power cord 5 of the steam iron is disconnected from the network.
  • the electronic circuit 11 activates the indicator 10, for example flashing, to invite the operator to carry out a descaling operation.
  • the user is then invited to perform a descaling operation of the iron, for example by setting the thermostat 6 to the maximum temperature and by pressing a self-cleaning button 12 provided on the iron so as to cause, in a manner known in a sudden inflow of water from the tank 8 to the vaporization chamber 30 to obtain the separation of the scale particles and their evacuation through the steam holes of the sole 2.
  • the electronic circuit 11 is connected to the self-cleaning button 12 and performs, upon actuation of the self-cleaning button, a reset memory in which is stored the accumulation of energy consumed by the heating resistor 31.
  • the value of the threshold from which the indicator light 10 is activated is obtained experimentally by operating irons at full steam with moderately calcareous water and by measuring the threshold from which the state of scaling iron requires a descaling operation.
  • Such activation of the scaling indicator from the measurement of the sum of the energy consumed by the heating resistor makes it possible, in a simple manner, to obtain a good match between the actual state of scaling of the iron and activation of the scaling indicator light. Indeed, the evaporation of water for the production of steam being strongly energy consuming, the indicator indicator of scaling of the iron will be activated much more quickly when the iron will be used to iron when the iron will be used for dry ironing. However, the scaling of iron depends essentially on the amount of water that is evaporated in the vaporization chamber.
  • the determination of the scaling state of the iron will be further improved by calculating the energy consumed by the resistor 31 used only for evaporating the water. This gives a very good estimate of the amount of water evaporated in the vaporization chamber, the latter being in direct correlation with the energy expended for the vaporization.
  • the electronic circuit 11 calculates, in an approximate manner, the energy used to evaporate the water by subtracting, from the accumulation of the energy consumed by the resistor 31, an estimate of the energy necessary to maintain the soleplate 2 at the same time.
  • thermostat 6 setpoint temperature when dry ironing the textile.
  • This energy required for dry ironing is estimated by integrating over time a standard power required for dry ironing the textile for the set temperature.
  • the value of this standard power is determined by correlation from standard power values, stored in a memory of the electronic circuit 11, for different temperature values of the sole 2.
  • these standard power values are of the order of 100 W for a sole temperature close to 100 ° C. and 300 W for a sole temperature close to 200 ° C.
  • the electronic circuit 11 then simply calculates, from these values, the energy consumed for the evaporation of the water by integrating, over the operating time of the heating resistor 31, determined from the thermostat 6, the power consumed. by the heating resistor 31 to which is subtracted the standard power used to maintain the sole 2 at the set temperature.
  • the scaling indicator is then activated.
  • the iron may also comprise means allowing the user to indicate the degree of hardness of the water introduced into the reservoir, so that the hardness of the water can be taken into account by the electronic circuit. 11 to adapt the activation threshold of indicator 10 scaling indicator depending on the hardness of the water.
  • Such a variant makes it possible to further improve the adequacy between the activation of the scaling indicator and the actual state of scaling of the iron.
  • the activation of the scaling indicator will not take place, or only after a very long period of use of iron, if the user goes back essentially dry.
  • the mechanical thermostat of the iron may be replaced by an electronic thermostat connected to temperature sensors.

Claims (10)

  1. Dampfbügeleisen mit einer Verkalkungsanzeige (10), das einen Heizkörper (3) umfasst, der eine Verdampfungskammer (30) für das Erzeugen von Dampf aufweist, dadurch gekennzeichnet, dass es Mittel aufweist, die es ermöglichen, eine durch das Bügeleisen verbrauchte elektrische Energie zu berechnen, und Mittel, die dazu dienen, die Verkalkungsanzeige (10) zu aktivieren, wenn die berechnete Energie eine vorherbestimmte Schwelle überschreitet.
  2. Bügeleisen nach Anspruch 1, dadurch gekennzeichnet, dass der Heizkörper (3) einen elektrischen Heizwiderstand (31) aufweist, dessen Betrieb durch einen Thermostat (6) geregelt ist, und dass das Bügeleisen Mittel aufweist, um die kumulierte Zeit zu messen, während welcher das Thermostat (6) den Heizwiderstand (31) elektrisch versorgt.
  3. Bügeleisen nach Anspruch 2, dadurch gekennzeichnet, dass die Mittel zum Messen der kumulierten Betriebszeit des Heizwiderstands in eine elektronische Schaltung (11) integriert sind, die die Aktivierung der Verkalkungsanzeige (10) steuert, wobei die elektronische Schaltung (11) vom Thermostat (6) die Information darüber erhält, ob der Heizwiderstand (31) versorgt ist oder nicht.
  4. Bügeleisen nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Bügeleisen Mittel aufweist, um die durch den Heizwiderstand (31) verbrauchte Energiemenge zu berechnen, und dass die Verkalkungsanzeige (10) aktiviert wird, wenn die durch den Heizwiderstand (31) verbrauchte Energiemenge eine vorherbestimmte Schwelle überschreitet.
  5. Bügeleisen nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Bügeleisen Mittel aufweist, um die zum Erzeugen von Dampf verbrauchte Energiemenge zu berechnen, und dass die Verkalkungsanzeige (10) aktiviert wird, wenn die für die Dampfbildung verbrauchte Energiemenge eine vorherbestimmte Schwelle überschreitet.
  6. Bügeleisen nach Anspruch 5, dadurch gekennzeichnet, dass die zum Erzeugen von Dampf verbrauchte Energiemenge berechnet wird, indem eine Schätzung der Energie, die für das Trockenbügeln eines Textiles bei der Solltemperatur des Thermostats notwendig ist, von der durch den Heizwiderstand (31) verbrauchten Energie subtrahiert wird.
  7. Bügeleisen nach Anspruch 6, dadurch gekennzeichnet, dass die Energie, die für das Trockenbügeln eines Textiles bei der Regeltemperatur des Thermostats (6) notwendig ist, geschätzt wird, indem in die Zeit eine Standard-Stromstärke integriert wird, die für das Trockenbügeln eines Textiles bei der Regeltemperatur des Thermostats (6) notwendig ist, wobei der Wert dieser Stromstärke ausgehend von Werten bestimmt wird, welche in einem Speicher der elektronischen Schaltung (11) gespeichert sind.
  8. Bügeleisen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Aktivierungsschwelle der Verkalkungsanzeige (10) in Abhängigkeit von dem vom Benutzer angegebenen Härtegrad des Wassers, das in die Verdampfungskammer (30) eingeleitet ist, moduliert wird.
  9. Bügeleisen nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass es einen Knopf (12) umfasst, dessen Betätigung es ermöglicht, die Berechnung der verbrauchten elektrischen Energie zu reinitialisieren, wenn die Verkalkungsanzeige (10) aktiviert ist.
  10. Bügeleisen nach Anspruch 9, dadurch gekennzeichnet, dass der Reinitialisierungsknopf (12) auch einen Selbstreinigungsknopf bildet, der die plötzliche Zufuhr einer großen Menge von Wasser in die Verdampfungskammer (30) hervorruft.
EP07733962A 2006-03-31 2007-03-07 Dampfbügeleisen mit verkalkungsanzeige Not-in-force EP2002050B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0602828A FR2899246B1 (fr) 2006-03-31 2006-03-31 Fer a vapeur comportant un indicateur d'entartrage
PCT/IB2007/000608 WO2007116255A1 (fr) 2006-03-31 2007-03-07 Fer a vapeur comportant un indicateur d'entartrage

Publications (2)

Publication Number Publication Date
EP2002050A1 EP2002050A1 (de) 2008-12-17
EP2002050B1 true EP2002050B1 (de) 2009-08-12

Family

ID=37397491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07733962A Not-in-force EP2002050B1 (de) 2006-03-31 2007-03-07 Dampfbügeleisen mit verkalkungsanzeige

Country Status (8)

Country Link
US (1) US20100175285A1 (de)
EP (1) EP2002050B1 (de)
CN (1) CN101410567B (de)
AT (1) ATE439467T1 (de)
DE (1) DE602007001966D1 (de)
ES (1) ES2331667T3 (de)
FR (1) FR2899246B1 (de)
WO (1) WO2007116255A1 (de)

Families Citing this family (22)

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Publication number Priority date Publication date Assignee Title
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
ES2396373B1 (es) * 2010-06-15 2014-01-02 BSH Electrodomésticos España S.A. Plancha de vapor con sistema de limpieza y descalcificación automático.
RU2674295C2 (ru) * 2013-07-25 2018-12-06 Конинклейке Филипс Н.В. Устройство для генерирования пара
CN107328020A (zh) * 2017-06-23 2017-11-07 广东美的制冷设备有限公司 用于加湿器的水垢检测组件、水垢检测方法及加湿器
IT201900016862A1 (it) * 2019-09-20 2021-03-20 De Longhi Appliances Srl Gruppo piastra per un ferro da stiro

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DE3223969A1 (de) * 1982-06-26 1984-01-05 Robert Krups Stiftung & Co KG, 5650 Solingen Geraet zum bereiten von kaffee, tee oder dergleichen
US4827104A (en) * 1986-10-16 1989-05-02 Dart Industries Inc. Phototransistor relay electronic temperature control for cordless irons
FR2688807B1 (fr) * 1992-03-20 1994-07-01 Superba Sa Appareil a repasser a vapeur muni d'un dispositif de detection et de suppression de tartre.
CH687059A5 (de) * 1993-12-15 1996-09-13 Jura Elektroapparate Ag Verfahren zur Erkennung der Verkalkung von warmwassererzeugenden Geraeten.
DE69910171T2 (de) * 1998-09-22 2004-06-17 Koninklijke Philips Electronics N.V. Dampfbügeleisen mit verkalkungsindikator

Also Published As

Publication number Publication date
ES2331667T3 (es) 2010-01-12
DE602007001966D1 (de) 2009-09-24
CN101410567A (zh) 2009-04-15
US20100175285A1 (en) 2010-07-15
FR2899246A1 (fr) 2007-10-05
WO2007116255A1 (fr) 2007-10-18
ATE439467T1 (de) 2009-08-15
EP2002050A1 (de) 2008-12-17
FR2899246B1 (fr) 2008-05-09
CN101410567B (zh) 2011-02-02

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