EP2423581B1 - Elektrisches Haushaltsgerät, das einen Dampferzeuger umfasst - Google Patents

Elektrisches Haushaltsgerät, das einen Dampferzeuger umfasst Download PDF

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Publication number
EP2423581B1
EP2423581B1 EP10305722.0A EP10305722A EP2423581B1 EP 2423581 B1 EP2423581 B1 EP 2423581B1 EP 10305722 A EP10305722 A EP 10305722A EP 2423581 B1 EP2423581 B1 EP 2423581B1
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EP
European Patent Office
Prior art keywords
steam
steam generator
return valve
household appliance
pressure
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.)
Active
Application number
EP10305722.0A
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English (en)
French (fr)
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EP2423581A3 (de
EP2423581A2 (de
Inventor
Bertrand Couet
François Sulpice
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SEB SA
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SEB SA
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Publication date
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Publication of EP2423581A2 publication Critical patent/EP2423581A2/de
Publication of EP2423581A3 publication Critical patent/EP2423581A3/de
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Publication of EP2423581B1 publication Critical patent/EP2423581B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/282—Methods of steam generation characterised by form of heating method in boilers heated electrically with water or steam circulating in tubes or ducts
    • 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
    • D06F75/02—Externally-heated hand irons; Hand irons internally heated by means other than electricity, e.g. by solid fuel, by steam
    • D06F75/06—Externally-heated hand irons; Hand irons internally heated by means other than electricity, e.g. by solid fuel, by steam with means for supplying steam or liquid to the article being ironed
    • 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
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F22B1/285—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs the water being fed by a pump to the reservoirs

Definitions

  • the present invention relates to a household appliance comprising a steam generator and more particularly to a household appliance in which the steam produced by the steam generator is conveyed towards a steam diffusion member such as an iron. or a steam brush.
  • a steam diffusion member such as an iron. or a steam brush.
  • an appliance comprising a steam vapor generator in which the steam produced is conveyed in the direction of an iron.
  • the iron is equipped with a trigger controlling a solenoid valve disposed downstream of the steam generator to stop or allow the diffusion of steam towards the iron.
  • the apparatus is also provided with a pressure switch downstream of the steam generator which controls the operation of the pump according to the vapor pressure measured at the outlet of the steam generator.
  • Such an apparatus has the advantage of producing pressurized steam by means of a flash vapor steam generator which is simple and inexpensive to manufacture.
  • a flash vapor steam generator which is simple and inexpensive to manufacture.
  • such a device has the disadvantage of include a solenoid valve and a pressure switch, with its associated electronics, which are still relatively expensive.
  • the pressure of the vapor output of such a device fluctuates greatly depending on the triggering of the trigger so that the performance of the device is not constant.
  • the period during which such an apparatus can produce continuous steam depends directly on the thermal energy stored in the aluminum mass associated with the steam generator, the iron starting to flow (appearance of water droplets at through the sole outlet steam holes) when all the heat stored in the metal mass is consumed.
  • it is necessary to have a large mass of aluminum for storing energy, which has the disadvantage of increasing the weight, the bulk and the cost of the apparatus, and also leads to a longer heating time of the apparatus.
  • an object of the present invention is to provide a household appliance producing steam under pressure which is very economical to manufacture and which has performance close to household appliances equipped with a steam generator, of boiling type, in which water is heated under pressure in a tank closed by a solenoid valve.
  • the subject of the invention is an appliance comprising a steam generator fed by a tank, the steam generator being connected to a steam distribution circuit through which steam produced by the steam generator is conveyed.
  • the steam distribution circuit comprising a pressurization check valve of a dispensing duct connected to the accessory for the treatment of laundry, the flap pressurizing anti-return device having a set pressure adapted to allow steam to pass to the laundry-treating accessory only when the pressure in the distribution duct is greater than or equal to a predetermined threshold, characterized in that that the steam generator is instantaneous and that the accessory for the treatment of the laundry comprises a manually operated valve to interrupt, on command, the diffusion of steam through the accessory for the treatment of laundry.
  • Such a characteristic makes it possible to obtain pressurized steam by means of an apparatus equipped with an economic steam generator to be manufactured.
  • Obtaining steam under pressure in the steam generator has the advantage of increasing the energy storage capacity of the steam generator, the energy is then stored in the form of enthalpy energy in the steam.
  • a pump is interposed between the reservoir and the steam generator, the pump for supplying liquid to the steam generator with a pressure greater than the calibration pressure of the pressurization check valve.
  • the calibration pressure of the pressurization check valve of the steam distribution duct is between 1 and 4 bars.
  • the apparatus comprises a depressurization check valve opening automatically when the pressure in the steam generator is below a predetermined threshold.
  • Such a feature ensures the venting of the steam generator when a depression occurs in the latter and especially during cooling.
  • the pressure threshold of the depressurization check valve is between 30 and 100 mbar.
  • the steam distribution circuit comprises a safety non-return valve having a set pressure greater than the pressurization check valve, the safety non-return valve being arranged downstream of the pressurizing check valve and upstream of the vapor diffusion member.
  • the calibration pressure of the safety nonreturn valve is between 4 and 5 bars.
  • the safety non-return valve is disposed on a bypass duct connecting the steam distribution duct to the tank.
  • the vaporization steam generator comprises a spiraling vaporization channel, one end of which is supplied with liquid by the reservoir, the other end being connected to the steam distribution conduit.
  • Such a spiral-shaped steam generator has the advantage of providing very good vaporization performance by providing a large heating length.
  • a steam generator comprises a constant section vaporization channel which has the advantage of not trapping scale, the scale particles being removed progressively by the steam flow.
  • the accessory is a steam iron.
  • the figure 1 represents an appliance for ironing comprising an iron 1 comprising a heating soleplate 2, provided with steam outlet holes, surmounted by a plastic housing incorporating a handle 3.
  • the iron is connected by a cord 4 to a separate base 10, the cord 4 for transporting steam and comprising, in a manner known per se, several electric cables for the electric supply of the iron 1.
  • the base 10 comprises a water reservoir 11 provided with a filling opening 11A and a steam generator 12 with instantaneous vaporization.
  • tank 11 being connected to the steam generator 12 by a supply duct 13 comprising a solenoid-type low-pressure pump 14 for injecting water into the instantaneous steam generator 12 under a pressure of order of 5 to 6 bars.
  • the pump 14 is preferably controlled by a trigger 5 carried by the handle 3 of the iron, the pump 14 being started when the user presses on the trigger 5.
  • the instantaneous steam generator 12 comprises an aluminum mass 120, of the order of 300 g, enclosing a spiraling channel 121 in the form of a spiral and a heated heating resistor 122 whose electrical supply is conventionally regulated by a mechanical thermostat, not shown in the figures, for maintaining the mass of aluminum 120 at a set temperature.
  • the heating resistor 122 may have a power of the order of 1 kW and the set temperature will be of the order of 140 ° C.
  • the spiral-shaped vaporization channel 121 comprises a central end connected to the supply duct 13 through which the water coming from the tank 11 is injected into the vaporization channel 121 so as to be instantly vaporized therein.
  • the vapor thus produced travels along the vaporization channel 121 to be superheated therein, in particular causing vaporization of any water droplets carried by the steam, the vaporization channel 121 having a peripheral end provided with an outlet orifice 121A. through which steam escapes to a steam distribution circuit.
  • the steam distribution circuit comprises a steam distribution duct 15, one end of which is connected to the cord 4 of the iron 1 and the other end is connected to the outlet orifice 121A of the vaporization channel 121, the duct Steam dispenser 15 having a pressurizing check valve 150 having a set pressure of the order of 3 bar, said pressurizing check valve 150 providing pressurization of the steam distribution conduit.
  • the vapor present in the steam distribution duct 15 at the outlet of the steam generator 12 can pass towards the iron 1 only when the vapor pressure upstream of the pressurization check valve 150 is greater than or equal to 3 bars.
  • the pressurizing check valve 150 may consist of a calibrated spring which is attached to a silicone shutter from closing an orifice.
  • Such a pressurizing valve 150 of the steam generator has the advantage of allowing the steam generator 12 to be put under pressure and thus the storage of a greater quantity of energy in the steam generator 12.
  • energy is stored both in the aluminum mass 120 but also in the form of enthalpy energy, in the steam under pressure.
  • this greater amount of stored energy is obtained by keeping a small mass of aluminum, which allows to keep a small footprint and a low cost .
  • the flow rate of the pump 14 will be adapted to the vaporization capacities of the instantaneous steam generator 12 and will be chosen so that a continuous operation of the pump 14 does not lead rapidly to the injection of a quantity more water than the vaporization capacity of the steam generator 12 and thus the emission of water droplets in the steam distribution duct.
  • the operation of the pump 14 may also be capped in time so as to avoid prolonged operation of the pump. For example, in the case of a continuous support of more than 10 seconds on the trigger 5, it may be provided to stop the pump 14 for a predefined period.
  • the steam distribution circuit also comprises a safety non-return valve 160 mounted on a bypass duct 16 connected on the one hand to the water tank 11 and on the other hand to the steam distribution duct 15, at a connection point disposed downstream of the pressurization check valve 150.
  • This check valve safety return 160 has a set pressure, for example of the order of 4 bars, which is higher than the calibration pressure of the pressurization check valve 150.
  • Such a safety non-return valve 160 makes it possible to limit the pressure in the steam generator 12, as well as in the cord 4 of the iron, by diverting the steam towards the water tank 11 of the device when the pressure becomes excessive.
  • the steam generator 12 also comprises a depressurization check valve 170 ensuring the venting of the steam generator 12 when a depression appears inside the latter, such a phenomenon occurring. especially during the cooling of the steam generator 12.
  • This depressurization check valve 170 is advantageously disposed at the end of a pipe 17 connected to the steam distribution pipe 15, upstream of the pressurization check valve 150.
  • the depressurization check valve 170 is calibrated to open and ensure the venting of the steam generator 12 when the pressure in the pipe 17 is less than 50 mbar.
  • the steam generator 12 When starting the device, the steam generator 12 is cold and the thermostat controls the start of the heating resistor 122, a light then possibly being lit on the device to signal the heating phase to the user.
  • the user can press the trigger 5 of the iron to cause the start of the pump 14 and thus the injection of water in the steam generator 12 to vaporization instant.
  • the injected water is then immediately vaporized in the vaporization channel 121 thanks to the thermal energy stored in the aluminum mass 120.
  • the vapor produced can not escape either direction of the tank 11, because of the presence of the pump 14 and the water in the conduit 13, nor in the direction of the iron 1, because of the presence of pressurizing check valve 150 which prevents the release of steam to the iron 1, so that the pressure increases rapidly in the steam generator 12.
  • the pressurization check valve 150 opens and the pressurized vapor flows through the cord 4 and is diffused through the steam outlet holes the sole 2 of the iron 1, to obtain very good ironing performance.
  • the iron 1 may also include a valve-type stop valve, not shown in the figures, so as to interrupt on command the diffusion of steam through the holes of the sole 2 iron.
  • This shut-off valve will preferably be actuated by the trigger 5 of the iron 1 so as to occupy an open position when the trigger is actuated, and will be automatically returned to a closed rest position when the trigger is released, by example by means of a spring or by the pressure of the steam.
  • Such an apparatus therefore has the advantage of being economical to manufacture and to provide performance similar to that of appliances equipped with a boiling-type steam generator, in which water is heated under pressure in a closed vessel. by a solenoid valve.
  • the apparatus according to the invention comprises only one or more check valves and is controlled by a simple mechanical thermostat so that it is much cheaper to manufacture than devices equipped with solenoid valves and a probe of temperature associated with electronics.
  • the steam generator instant vaporization may include a screen-printed heating element in place of the shielded resistor, the steam generator may for example be in accordance with the spiral-shaped steam generator as described in the patent application WO 2005118944 .
  • a non-return valve upstream of the steam generator to prevent the rise of steam under pressure to the tank.
  • Such a variant may be useful when the apparatus does not include a pump providing this function.
  • the direction of flow in the spiral vaporization channel of the steam generator can be reversed, the vaporization channel being then connected by its peripheral end to the tank and by its end. central to the steam distribution duct.
  • the steam vapor generator may be replaced by a mini-stainless steel tank in which water is brought to boiling.
  • the mechanical control thermostat of the steam generator may be replaced by a thermistor thermistor type negative temperature coefficient (NTC).
  • NTC thermistor thermistor type negative temperature coefficient
  • This last embodiment has the advantage of allowing a finer adjustment of the temperature to use vaporization systems, stainless steel mini-tank type, and to limit the pressure peaks.
  • the flow rate of the pump can be controlled by the temperature of the steam generator to avoid any risk of water saturation and eliminate the risk of spitting in the iron.
  • the steam generator may be connected to a steam brush or a steam cleaner in place of the iron.
  • the appliance according to the invention may be an espresso coffee machine incorporating a nozzle for vapor diffusion fed by a steam generator.

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Irons (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Reciprocating Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (10)

  1. Elektrisches Haushaltsgerät, umfassend ein von einem Vorratsbehälter (11) gespeisten Dampferzeuger (12) mit Verdampfung und ein Zubehörteil (1) zur Behandlung von Wäsche, wobei der Dampferzeuger (12) an einen Dampfverteilungskreis angeschlossen ist, über den der vom Dampferzeuger (12) erzeugte Dampf in Richtung des Zubehörteils (1) zur Behandlung von Wäsche befördert wird, indem der Dampf verteilt wird, wobei der Dampfverteilungskreis ein Rückschlagventil zum Druckausgleich (150) einer Verteilungsleitung (15) aufweist, die mit dem Zubehörteil (1) zur Behandlung von Wäsche verbunden ist, wobei das Rückschlagventil zum Druckausgleich (150) einen Ansprechdruck besitzt, der so ausgelegt ist, dass der Dampf zur Behandlung von Wäsche zu dem Zubehörteil (1) geleitet wird, nur wenn der Druck in der Verteilerleitung (15) größer oder gleich einem vorbestimmten Schwellenwert ist, dadurch gekennzeichnet, dass der Dampferzeuger (12) mit sofortiger Verdampfung ist, und dass das Zubehör für die Behandlung von Wäsche ein manuelles Steuerventil aufweist, dass es ermöglicht, auf Befehl die Verteilung von Dampf durch das Zubehörteil (1) zur Behandlung von Wäsche zu unterbrechen.
  2. Elektrisches Haushaltsgerät nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Vorratsbehälter (11) und dem Dampferzeuger (12) eine Pumpe (14) angeordnet ist, wobei es die Pumpe (14) ermöglicht, dem Dampferzeuger (12) Flüssigkeit mit einem Druck größer als dem Ansprechdruck des Rückschlagventils zum Druckausgleich (150) zuzuführen.
  3. Elektrisches Haushaltsgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Ansprechdruck des Rückschlagventils zum Druckausgleich (150) der Dampfverteilungsleitung (15) zwischen 1 und 4 bar liegt.
  4. Elektrisches Haushaltsgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass es ein Rückschlagventil zum Druckabbau (170) umfasst, das sich automatisch öffnet, wenn der Druck im Dampferzeuger (12) unter einem vorgegebenen Schwellenwert liegt.
  5. Elektrisches Haushaltsgerät nach Anspruch 4, dadurch gekennzeichnet, dass der Schwellenwert des Drucks des Rückschlagventils zum Druckabbau (170) zwischen 30 und 100 mbar liegt.
  6. Elektrisches Haushaltsgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Dampfverteilungskreis ein Sicherheitsrückschlagventil (160) aufweist, das einen Ansprechdruck besitzt, der größer als derjenige des Rückschlagventils zum Druckausgleich (150) ist, wobei das Sicherheitsrückschlagventil (160) stromabwärts des Rückschlagventils zum Druckausgleich (150) und stromaufwärts des Zubehörteils (1) zur Behandlung der Wäsche angeordnet ist.
  7. Elektrisches Haushaltsgerät nach Anspruch 6, dadurch gekennzeichnet, dass der Ansprechdruck des Sicherheitsrückschlagventils (160) zwischen 4 und 5 bar liegt.
  8. Elektrisches Haushaltsgerät nach einem der Ansprüche 6 bis 7, dadurch gekennzeichnet, dass das Sicherheitsrückschlagventil (160) an einer Abzweigleitung (16) angeordnet ist, die die Dampfverteilungsleitung (15) mit dem Vorratsbehälter (11) verbindet.
  9. Haushaltsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Dampferzeuger (12) mit sofortiger Verdampfung eine spiralförmige Verdampfungsleitung (121) aufweist, dessen eines Ende von dem Vorratsbehälter (11) mit Flüssigkeit versorgt wird, dessen anderes Ende mit der Dampfverteilungsleitung (15) verbunden ist.
  10. Elektrisches Haushaltsgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Zubehörteil (1) ein Dampfbügeleisen ist.
EP10305722.0A 2009-07-10 2010-07-02 Elektrisches Haushaltsgerät, das einen Dampferzeuger umfasst Active EP2423581B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0903411A FR2947892B1 (fr) 2009-07-10 2009-07-10 Appareil electromenager comportant un generateur de vapeur

Publications (3)

Publication Number Publication Date
EP2423581A2 EP2423581A2 (de) 2012-02-29
EP2423581A3 EP2423581A3 (de) 2014-07-02
EP2423581B1 true EP2423581B1 (de) 2019-09-18

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EP10305722.0A Active EP2423581B1 (de) 2009-07-10 2010-07-02 Elektrisches Haushaltsgerät, das einen Dampferzeuger umfasst

Country Status (4)

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EP (1) EP2423581B1 (de)
CN (1) CN101949090B (de)
FR (1) FR2947892B1 (de)
RU (1) RU2540782C2 (de)

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WO2020245174A1 (de) * 2019-06-03 2020-12-10 Swisslogo Ag Einrichtung zur erzeugung von dampf
CN110205789A (zh) * 2019-07-03 2019-09-06 深圳汉明威智能设备有限公司 一种蒸汽烫斗及其加热装置
CN113123104B (zh) * 2019-12-31 2022-06-21 莱克电气绿能科技(苏州)有限公司 蒸汽熨烫机
CN111636179B (zh) * 2020-05-31 2022-05-17 宁波凯波智能熨烫电器制造有限公司 衣物护理蒸汽装置、器具及蒸汽控制方法
CN111839195B (zh) * 2020-07-13 2022-01-28 广东美的厨房电器制造有限公司 蒸汽家电设备
CN111974467B (zh) * 2020-09-01 2022-03-25 上海搏旅仪器有限公司 一种可程式湿热交变试验箱的加湿器
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Also Published As

Publication number Publication date
RU2540782C2 (ru) 2015-02-10
FR2947892A1 (fr) 2011-01-14
EP2423581A3 (de) 2014-07-02
RU2010128567A (ru) 2012-01-20
EP2423581A2 (de) 2012-02-29
FR2947892B1 (fr) 2012-08-10
CN101949090A (zh) 2011-01-19
CN101949090B (zh) 2013-10-23

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