EP1774224B1 - Dispositif a vapeur destine particulierement a des appareils domestiques electriques - Google Patents

Dispositif a vapeur destine particulierement a des appareils domestiques electriques Download PDF

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Publication number
EP1774224B1
EP1774224B1 EP04745210A EP04745210A EP1774224B1 EP 1774224 B1 EP1774224 B1 EP 1774224B1 EP 04745210 A EP04745210 A EP 04745210A EP 04745210 A EP04745210 A EP 04745210A EP 1774224 B1 EP1774224 B1 EP 1774224B1
Authority
EP
European Patent Office
Prior art keywords
bottom wall
water
tank
chamber
steam
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
EP04745210A
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German (de)
English (en)
Other versions
EP1774224A1 (fr
Inventor
Daniele De Rossi
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.)
Dierre Finanziaria SpA
Original Assignee
Dierre Finanziaria SpA
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Application filed by Dierre Finanziaria SpA filed Critical Dierre Finanziaria SpA
Publication of EP1774224A1 publication Critical patent/EP1774224A1/fr
Application granted granted Critical
Publication of EP1774224B1 publication Critical patent/EP1774224B1/fr
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
    • D06F75/10—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

Definitions

  • the present invention relates to a steaming device, particularly for common electric household appliances such as irons or floor cleaners.
  • such devices are equipped with a boiler comprising a tank containing water to be turned into steam.
  • the boiler can be integrated into the aforesaid electric appliance or it can be separate from the latter and connected to it through suitable steam pipes.
  • the tank is connected to a water supply duct, which supplies water into said tank.
  • the duct is equipped with a supply pump connected to a thermostatic switch arranged inside the tank.
  • the switch When water inside the tank is fully turned into steam, the switch activates and turns on the supply pump so that it supplies again water to the tank.
  • the boiler is thus cyclically filled up with water whenever it is fully emptied.
  • Water inside the tank is heated by means of an electric resistance normally arranged under a bottom wall of the tank.
  • the tank is provided with a steam outlet opening connected to the steam pipe, which as was mentioned above is associated to the corresponding electric appliance.
  • control elements are further arranged, which act upon the steam pipe and can be managed directly by the user so as to close or open the aforesaid pipe.
  • an important aim of the invention is to conceive a steaming device that enables to keep a constant water level in the boiler it is provided with, so that the supplied steam has always unchanged properties.
  • Another important aim of the invention is to conceive a steaming device in which heating times are further reduced with respect to the state of the art thanks to an automatic refilling of water into the boiler.
  • the steaming device according to the invention is globally referred to with number 1.
  • the device 1 comprises a tank 2 defining a closed chamber 3 housing inside water to be turned into steam.
  • said tank 2 has a flat bottom wall 2a having a basically horizontal development so as to collect water introduced into the chamber 3.
  • the device 1 further has at least one outlet opening 4 for sending the generated steam to a user electric household appliance, not shown in Figure 1 , for instance an iron.
  • the outlet opening 4 is advantageously associated to the tank 2 above the aforesaid bottom wall 2a and it is operatively connected to a known steam conveying duct, which shall not be described in further detail.
  • the bottom wall 2a of the tank 2 is provided with heating means 5 supplying said bottom wall 2a with a given thermal energy per surface unit.
  • said heating means 5 preferably comprise an electric resistance associated to a lower surface 7 of the bottom wall 2a placed outside the chamber 3.
  • the electric resistance 6 can be integrated into a plate 7a made of aluminum alloy, applied outside and with heat exchange against the lower surface 7 of the bottom wall 2a.
  • the electric resistance 6 thus generates a thermal flow for heating the bottom wall 2a, which gets the aforesaid thermal energy per surface unit.
  • the bottom wall 2a has a first and a second water collection portion 9, 10, separate and coplanar one with respect to the other.
  • the device 1 has a partition wall 11 housed inside the chamber 3 and extending from the bottom wall 2a for separating the first portion 9 from the second portion 10, thus defining two separate water reservoirs.
  • the partition wall 11 can be basically ring-shaped so as to surround the first portion 9.
  • the first portion 9 is arranged inside the second portion 10, which develops along the peripheral development of the bottom wall 2a.
  • the partition wall 11 can take any shape and can define the aforesaid first portion 9 together with a lateral wall of the tank 2.
  • the partition wall 11 includes a ring-shaped element 11a associated to the bottom wall 2a by means of suitable hooking elements, or resting on the latter.
  • a conventional sealing gasket can further be present.
  • the partition wall 11 can be obtained from the bottom wall 2a, suitably shaped so as to obtain a projection 11b constituting the aforesaid partition wall 11.
  • the first and second portion 9, 10 have respective upper surfaces 8, coplanar one to the other and arranged inside the chamber 3 opposite the aforesaid lower surface 7.
  • the upper surface 8 of the first portion 9 is smaller than the upper surface 8 of the second portion 10.
  • the electric resistance 6 mainly develops on the first portion 9, so as to generate a higher average thermal energy in the first portion than the average thermal energy in the second portion 10.
  • the electric resistance 6 is basically "U"-shaped.
  • the central portion of the "U"-shaped resistance is arranged on the first portion 9 of the bottom wall 2a, so as to receive a larger amount of heat with respect to its surface.
  • Water is introduced into the tank 2 by means of a supply source 12 operatively connected to at least one water inlet opening 13 associated to the tank 2 above the bottom wall 2a.
  • the two openings 13 can be adjusted so that the flow rate of the opening placed on the second portion 10 is higher, and preferably twice as much, than the flow rate of the opening placed on the first portion 9.
  • the supply source 12 has a supply element 14 engaged to the inlet opening 13 for supplying water into the chamber 3.
  • the supply element 14 is advantageously connected to a thermal sensor 15 placed in the first portion 9 and designed to detect water exhaustion through a given temperature rise.
  • the thermal sensor 15 preferably includes a known thermostatic switch, which therefore is not described in further detail, associated to the bottom wall 2a (see Figure 2 ).
  • the supply element 14 includes a water reservoir 16, connected to the tank 2 by means of a supply duct 17.
  • the supply duct 17 has a first end 17a associated to the aforesaid reservoir 16, and a second end 17b engaged to the inlet opening 13 for putting into fluid communication the reservoir 16 with the chamber 3 of the tank 2.
  • the duct 17 advantageously has two second ends 17b, each of them being associated to a corresponding inlet opening 13.
  • the water flow coming from the reservoir 16 is split up between the two second ends 17b of the aforesaid duct 17 by means of a pump 18 mounted inside the duct 17 between the first end and the second ends 17a, 17b.
  • the pump 17 is controlled by a thermal sensor 15 so as to allow water to pass only when said thermal sensor detects a given temperature rise due to the substantial exhaustion of water contained in the first portion 9.
  • the heating means 5 further comprise an auxiliary thermal sensor 19, which preferably also includes a thermostatic switch.
  • the auxiliary sensor 19 is arranged near the resistance 6 and is adjusted so as to interrupt electric supply to the latter upon reaching of a pre-established safety temperature.
  • the device for generating steam according to the invention described above from a mainly structural point of view, works as follows.
  • the supply element 14 fills the chamber 3 up to a pre-established level, generating steam immediately and simultaneously to the rise of water level.
  • the initial absence of water causes a sudden temperature rise in the first portion 9 and thus the activation of the pump 18 by the sensor 15.
  • the amount of water getting in through an inlet opening 13 and falling into the first portion 9 cools the upper surface 8 and rapidly heats up and evaporates, whereas the amount of water introduced into the second portion 10 of the bottom wall 2a heats up.
  • a series of steps of de-activation and activation of the pump 18 follows in the same way, during which the first portion 9 undergoes alternating conditions of minimum water level and partial filling, whereas water in the second portion 10 progressively rises up to the pre-established level as defined by the height of the partition wall 11 separating the two portions.
  • water in excess falls into the first portion 9 and cools its upper surface 8, thus making the pump 18 stop.
  • the heating and evaporation of water fallen into the first portion 9 causes a new start of the pump 18, and thus steps of stop and activation of the pump 18 follow up one another, thus keeping water level in the chamber 3 constantly at the same height as the partition wall 11.
  • the invention has important advantages.
  • the first portion 9 having always a high thermal energy continuously turns water into steam, and as soon as water inside the first portion gets exhausted (minimum level), new water is introduced by means of the sensor 15. During this step, water inside the second portion heats up and is turned into steam.
  • the partition wall 11 enables water to overflow from the second to the first portion, so as to keep a basically constant water level in the chamber 3, thus obtaining steam with accordingly constant properties.
  • the device according to the invention enables a simple and accurate control of water level in the chamber 3, thus reducing tank size though generating steam with constant properties.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Cookers (AREA)
  • Organic Insulating Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (14)

  1. Dispositif à vapeur (1), en particulier pour appareils électroménagers, comprenant:
    - une cuve (2) définissant un compartiment fermé (3) et ayant une paroi de fond plate (2a) avec un développement substantiellement horizontal pour le captage d'eau;
    - au moins une ouverture d'entrée de l'eau (13) associée à la cuve (2) au-dessus de ladite paroi de fond (2a) et reliée de façon opérationnelle à une source d'alimentation en eau (12);
    - au moins une ouverture de sortie de la vapeur (4) associée à la cuve (2) au-dessus de ladite paroi de fond (2a) et apte à être reliée de façon opérationnelle à un appareil électroménager pour alimenter ce dernier en vapeur; et
    - des moyens de chauffage (5) associés à la paroi de fond (2a) de la cuve (2), où ladite paroi de fond (2a) est munie desdits moyens de chauffage (5) pour fournir une énergie thermique donnée pour unité de surface à ladite paroi de fond (2a), caractérisé en ce que ladite paroi de fond (2a) présente une première et une deuxième portion (9, 10) pour le captage d'eau, séparées et substantiellement coplanaires l'une à l'autre, la première et la deuxième portion (9, 10) ayant des surfaces supérieures (8) respectives, coplanaires l'une à l'autre et rangées dans ledit compartiment (3) devant une surface inférieure (7) de ladite paroi de fond (2a); l'énergie thermique moyenne pour unité de surface fournie par lesdits moyens de chauffage (5) à la première portion (9) étant plus grande que l'énergie thermique moyenne pour unité de surface fournie à la deuxième portion (10), et en ce que il comprend en outre un capteur thermique (15) associé de façon opérationnelle à la paroi de fond (2a) sur ladite première portion (9).
  2. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens de chauffage (5) présentent au moins une résistance électrique (6) engagée à ladite surface inférieure (7) de la paroi de fond (2a) à l'extérieur dudit compartiment (3).
  3. Dispositif selon la revendication 2, caractérisé en ce que ladite résistance électrique (6) se développe principalement sur ladite première portion (9).
  4. Dispositif selon la revendication 2, caractérisé en ce que ladite résistance électrique (6) est substantiellement en «U», ladite première portion (9) étant rangée sur une portion centrale dudit «U».
  5. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que la surface supérieure (8) de la première portion (9) est plus petite que la surface supérieure (8) de la deuxième portion (10).
  6. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que il comprend une cloison (11) pour séparer la première portion de la deuxième portion (9, 10).
  7. Dispositif selon la revendication 6, caractérisé en ce que ladite cloison (11) s'étend de ladite paroi de fond (2a) et est solidaire avec la paroi de fond (2a).
  8. Dispositif selon la revendication 6, caractérisé en ce que ladite cloison (11) comprend un élément annulaire (11a) associé à la paroi de fond (2a) et un joint d'étanchéité placé entre l'élément annulaire (11a) et la paroi de fond (2a).
  9. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que ledit capteur thermique (15) est un interrupteur thermostatique.
  10. Dispositif selon la revendication 9, caractérisé en ce que ladite source d'alimentation en eau (12) comprend un élément d'alimentation (14) engagé à ladite ouverture d'entrée (13) pour alimenter l'eau dans ledit compartiment (3); ledit élément (14) étant relié de façon opérationnelle audit capteur thermique (15).
  11. Dispositif selon la revendication 10, caractérisé en ce que ledit élément d'alimentation (14) comprend:
    - un réservoir d'eau (16);
    - un conduit d'alimentation (17) ayant une première extrémité (17a) associée audit réservoir (16), et une deuxième extrémité (17b) engagé à ladite ouverture d'entrée de l'eau (13) pour mettre en communication de fluide le réservoir (16) avec ledit compartiment (3) de la cuve (2); et
    - une pompe (18) rangée entre ladite première et ladite deuxième extrémité (17a, 17b) du conduit (17) et reliée de façon opérationnelle audit capteur thermique (15) pour porter l'eau du réservoir (16) au compartiment (3) lorsque ledit capteur (15) détecte un niveau d'eau minimum dans ladite première portion (9).
  12. Dispositif selon la revendication précédente, caractérisé en ce que il comprend deux ouvertures d'entrée de l'eau (13), chacune étant placée au-dessus d'une portion correspondante (9, 10) de la paroi de fond (2a); ledit conduit d'alimentation (17) ayant deux deuxièmes extrémités (17b), chacune étant associée à une ouverture correspondante (13).
  13. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens de chauffage (5) comprennent en outre un capteur thermique auxiliaire (19) réglé à une température de sécurité pour interrompre l'alimentation électrique auxdits moyens électriques (5).
  14. Dispositif selon la revendication 6, caractérisé en ce que la cloison (11) est substantiellement annulaire de sorte à entourer la première portion (9), la première portion (9) étant rangée dans la deuxième portion (10), qui se développe le long du développement périphérique de la paroi de fond (2a).
EP04745210A 2004-07-12 2004-07-12 Dispositif a vapeur destine particulierement a des appareils domestiques electriques Expired - Lifetime EP1774224B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000387 WO2006006187A1 (fr) 2004-07-12 2004-07-12 Dispositif a vapeur destine particulierement a des appareils domestiques electriques

Publications (2)

Publication Number Publication Date
EP1774224A1 EP1774224A1 (fr) 2007-04-18
EP1774224B1 true EP1774224B1 (fr) 2010-10-27

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ID=34958254

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Application Number Title Priority Date Filing Date
EP04745210A Expired - Lifetime EP1774224B1 (fr) 2004-07-12 2004-07-12 Dispositif a vapeur destine particulierement a des appareils domestiques electriques

Country Status (4)

Country Link
EP (1) EP1774224B1 (fr)
AT (1) ATE486247T1 (fr)
DE (1) DE602004029824D1 (fr)
WO (1) WO2006006187A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2350210B1 (es) * 2008-09-22 2011-11-16 Bsh Krainel, S.A Aparato domestico con una caldera de vapor llenable y caldera de vapor para un aparato domestico
EP2287381A1 (fr) * 2009-08-17 2011-02-23 BSH Bosch und Siemens Hausgeräte GmbH Générateur de vapeur à utiliser dans un appareil de traitement du linge et appareil comprennant celui-ci
WO2011127620A1 (fr) * 2010-04-12 2011-10-20 Sun Cupid Industries Ltd. Chaudière
CN104075304B (zh) * 2014-07-04 2016-01-13 深圳市银星智能科技股份有限公司 一种蒸汽发生系统及智能保洁机器人
CN105135399B (zh) * 2015-09-30 2017-07-04 广东新宝电器股份有限公司 一种蒸汽发生装置及熨烫装置
CN105249897B (zh) * 2015-11-11 2019-11-05 江苏瑞特钢化玻璃制品有限公司 家用蒸汽清洗机
CN105476554B (zh) * 2015-11-11 2017-09-26 中山汇尔吉自动化设备有限公司 手推燃油蒸汽清洗机
US11618992B2 (en) 2017-06-16 2023-04-04 Spectrum Brands, Inc. Steam generator with pre-heat chamber and filter
PL3714094T3 (pl) * 2017-11-23 2023-08-28 I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini Układ wytwarzania pary wodnej do użytku w urządzeniach gospodarstwa domowego
DE102020113674A1 (de) * 2020-05-20 2021-11-25 Miele & Cie. Kg Verfahren und Steuereinheit zum Bereitstellen von Dampf in einem Dampfkessel für eine Bügeleinrichtung, Dampfbereitstellungsvorrichtung und Bügeleinrichtung
CN113576347A (zh) * 2021-08-09 2021-11-02 四川启睿克科技有限公司 一种利用洗衣废水清洗清洁机器人拖布的方法及设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443798C1 (de) * 1994-12-08 1996-03-21 Kaercher Gmbh & Co Alfred Dampfreinigungsgerät
IT1288957B1 (it) * 1996-07-26 1998-09-25 Esse 85 Srl Generatore di vapore per ferri da stiro o simili

Also Published As

Publication number Publication date
DE602004029824D1 (de) 2010-12-09
EP1774224A1 (fr) 2007-04-18
WO2006006187A1 (fr) 2006-01-19
ATE486247T1 (de) 2010-11-15

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