EP0554549B1 - Fer à repasser avec cartouche filtrante remplaçable - Google Patents

Fer à repasser avec cartouche filtrante remplaçable Download PDF

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Publication number
EP0554549B1
EP0554549B1 EP92121280A EP92121280A EP0554549B1 EP 0554549 B1 EP0554549 B1 EP 0554549B1 EP 92121280 A EP92121280 A EP 92121280A EP 92121280 A EP92121280 A EP 92121280A EP 0554549 B1 EP0554549 B1 EP 0554549B1
Authority
EP
European Patent Office
Prior art keywords
steam iron
filter
water
tap water
filler neck
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
EP92121280A
Other languages
German (de)
English (en)
Other versions
EP0554549A1 (fr
Inventor
Bernd Lindstaedt
Georges Dr. Driesen
Klaus Amsel
Andrea Hahnewald
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Publication of EP0554549A1 publication Critical patent/EP0554549A1/fr
Application granted granted Critical
Publication of EP0554549B1 publication Critical patent/EP0554549B1/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
    • D06F75/14—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

Definitions

  • the invention relates to a steam iron with an interchangeable filter insert, which contains a filter material for removing the hardness from tap water, the filter insert is in the use positions of the steam iron above or behind the water tank and a filter arranged between the water inlet and water tank or between the water tank and steam chamber which is flowed through by tap water in the axial direction.
  • distilled or decalcified water is recommended for steam irons.
  • the housewife When using distilled water, the housewife must constantly ensure that there is sufficient stock.
  • distilled water is relatively expensive. The housewife can descale tap water herself.
  • so-called quick decalcification devices are offered, in which the tap water is passed through a filter device with an exchangeable filter cartridge and is collected in a storage vessel. This method is cumbersome for the housewife, because the tap water must first be filtered in a separate container to soften it and only then can it be filled into the steam iron.
  • a Braun 5000 protector steam iron manufactured by the applicant is already known and can be operated directly with tap water.
  • This device is resistant to limescale insensitive steam outlet openings.
  • it is only suitable for tap water with a water hardness of up to 17 ° dH.
  • a filter device for the tap water is not provided in this steam iron, so that deposits, in particular limescale, and thus the clogging of the steam outlet openings cannot ultimately be avoided.
  • an exchangeable filter cassette is inserted into the handle housing near the shelf, which is filled with a filter material that is colored with a color indicator.
  • a change in color of the filter material which can be seen from the outside through the transparent bottom of the filter cassette, indicates that the filter capacity is exhausted and the filter cassette must be replaced.
  • the refilled tap water flows through the filter cartridge before it reaches the water tank. Due to the position of the filter cassette and the fact that its inlet and outlet openings are located on the same side of the cassette, a special sealing of the openings is required and the steam iron cannot be operated without a filter cassette.
  • the water On its way to the water tank, the water essentially only flows through the part of the filter material located near the inlet and the outlet opening, so that it quickly becomes exhausted in this area and the water then flows largely unfiltered into the water tank. It is also disadvantageous that the filter cassette and the water tank are at the same level and that heated water penetrates into the filter cassette during ironing and the filter material can be damaged in this way.
  • the object of the invention is to provide a steam iron of the type mentioned, in which the filter insert has a high filtering effect and at the same time the service life of the soleplate is long.
  • the proportion of the filtered tap water can be 30% to 70%. In this way it is achieved that the pH value of the water in the water tank is always in the neutral range and thus the lifespan of the sole of the steam iron is increased, since corrosion due to pH fluctuations that result from a complete filtration of the supplied tap water can be avoided. Furthermore, the effective filter capacity of the filter insert increases without, however, reducing the steam output of the steam iron.
  • the proportion of tap water that is filtered or flows through the bypass line depends on the water hardness of the tap water.
  • the passage cross section of the bypass line is adjustable. It is considered favorable if the bypass line is integrated in the filter insert.
  • the filter material can be used optimally and the tap water can be softened depending on the size of the bypass line. Due to the arrangement of the filter insert above the water tank, the filter material only comes into contact with cold water both when filling the water supply, when ironing and when switching off the steam iron. This will on the one hand avoided that heat-sensitive filter material decomposes when it comes into contact with hot water and thereby develops undesirable vapors. On the other hand, this arrangement makes additional thermal insulation of the water tank unnecessary. An additional water transport device such as a pump is not required.
  • a complex sealing of the filter device to the water tank is also not required and the filter insert can be replaced easily and without spilling or leaking water. It is also possible to operate the steam iron without a filter insert, for example in regions with tap water of very low water hardness, or if no new filter insert is temporarily available if the filter insert becomes clogged or exhausted.
  • the filter insert is designed so that the maximum filtering speed is approximately 1 cm / s. This results in favorable dimensions for the filter insert, which are adapted to the size of a steam iron, and partial softening of the tap water is achieved for irons.
  • a ventilation channel is arranged parallel to the filter insert, which is connected to the water tank and escapes from the air and the carbon dioxide generated during softening from the water tank can.
  • the softening takes place in two successive stages and the tap water for decarbonization firstly a layer of a selectively softening filter material and then a layer of a filter material arranged underneath for complete softening or demineralization flows through, the two filter layers being separated from one another by a sieve.
  • This combination of a selective pre-filter with a subsequent "full filtration” prevents pH fluctuations of the filtered water, which are undesirable due to the susceptibility of the soleplate to corrosion and which occur when only one filter material is used, since the cationic content of the filter material is quickly used up in tap water with a high carbonate content and the filter water becomes alkaline due to the anionic excess.
  • a filler neck is provided according to the invention.
  • the filler neck can be arranged on the handle housing. But it can also be formed on the filter insert. It is advisable to provide the filler neck with a closure. It has proven to be particularly favorable if the filler neck consists of several interlocking rings which can be telescopically extended. If the extended filler neck is filled with tap water, the hydrostatic pressure in the tap water at the inlet opening of the filter increases and influences the filtering speed and thus the degree of softening of the water.
  • the invention further provides that the filler neck can be provided with markings that correspond to different water hardness ranges and specify how high the filler neck should be filled with water in order to achieve the softening required for the respective water hardness range by influencing the filtering speed. With the telescopic pull-out filler neck, this can be achieved by adjusting the pull-out height.
  • the filter insert can also be used separately outside of the steam iron for softening tap water.
  • the steam iron shown in Figure 1 has a sole 1 with openings, not shown, for the exit of the steam.
  • a steam chamber 2 above the sole 1, in which water is heated and brought to a boil.
  • the steam chamber 2 is connected to the water tank 3 arranged above via a steam stop valve 4, which can be opened and closed with a tappet 5.
  • the water tank 3 can be installed permanently or can be removed from the handle housing 6 surrounding it.
  • the handle housing 6 contains the electrical connection parts of the steam iron and at its rear end there is a beveled surface 7 on which the steam iron can be placed, especially when it is hot.
  • a temperature selection switch 9 is arranged in a handle opening below the handle 8.
  • a cylindrical recess 10 In the front end of the handle housing 6 there is a cylindrical recess 10 in which a filter insert 11 is inserted, and a ventilation channel 12 runs parallel to the recess 10 and is connected to the water tank 3.
  • a sealing seat 13 On the Filter insert 11 is connected at its lower end to the water tank 3 via a sealing seat 13. It consists of three cylindrical rings 14, 15, 16, which are arranged one above the other in the position shown and with their ends engage tightly and thereby form a tube. The upper end of the tube protrudes beyond the handle housing 6 and forms with its upper rings 15, 16 a filler neck 17 which is closed by a cover 18 placed on the uppermost ring 16. If the cover 18 is removed, tap water can be conveniently and easily filled into the tube. After filling, the rings 14, 15, 16 can be telescopically pushed into one another, the ring 15 surrounding the ring 14 and the ring 16 surrounding the ring 15.
  • the filter 19 which the tap water must flow through for softening, before it is stored in the water tank 3.
  • the entire passage cross-section in the ring 14 is available for the tap water to flow through, this cross-section also being flown on the inlet side of the filter 19.
  • the filter 19, which is designed as a two-layer filter, is shown in detail in FIG. It is delimited at the upper end by an inlet sieve 20 and at the lower end by an outlet sieve 21. An intermediate sieve 22 is arranged in between.
  • a filter bed 23 as a prefilter, which is filled with a cationic ion exchange resin, by means of which calcium and magnesium ions which are only in solution as hydrogen carbonate are exchanged from the tap water flowing through. Hydrogen ions (H+) go into solution with the hydrogen carbonate ions (HCO - 3rd ) react, forming carbon dioxide (CO2) and water (H2O).
  • a filter bed 24 is arranged, which is filled with a standard ion exchange resin and for the complete softening or demineralization of tap water can exchange all anions for H+ and all cations for OH ⁇ .
  • the upstream decarbonization of the tap water in the filter bed 23 prevents, especially in tap water with a high proportion of carbonate hardness, that the cations of the standard ion exchange resin in the filter bed 24 are quickly used up and then only anions are available and thereby prevents the filtered water from increasing Dimensions becomes alkaline and the soleplate corrodes.
  • the complete softening of the tap water in the filter bed 24 can thus take place with equivalent proportions of cations and anions.
  • the filter material in the filter beds 23 and 24 can be enriched with a color indicator.
  • the exhaustion of the filter capacity of the filter 19 is then indicated by a change in the color indicator, which is visible through a window provided in the filter 19 but not shown.
  • FIG. 3 shows an upper part of a steam iron with a filler neck 27 arranged at the front end of a handle housing 26, through which tap water can be refilled into the water tank of the steam iron via a filter insert located in the handle housing 26.
  • the filler neck 27 consists of three cylindrical rings 28, 29, 30 which are arranged telescopically one inside the other, the lowest ring 28, which has the largest diameter, being rigidly attached to the handle housing 26.
  • the ring 29 is inserted with a smaller diameter and in turn the ring 30 with the smallest diameter.
  • the rings 29 and 30 can be extended telescopically upwards from the position shown. This increases the hydrostatic pressure in the tap water at the inlet opening of the filter, which increases the filtering speed and reduces the refill time accordingly.
  • the filtering speed and thereby the degree of softening can be influenced by the pull-out height of the filler neck 27.
  • FIG. 4 shows a possible application of the filter insert 11 according to FIG. 1 for softening water outside of a steam iron.
  • the filter insert 11 is inserted into the opening of a cover 31, which closes a recording device 32 for the filtered water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Claims (17)

  1. Fer à repasser à vapeur comprenant une cartouche filtrante remplaçable, qui contient un matériau filtrant pour supprimer les agents de dureté hors de l'eau du réseau, la cartouche filtrante (11) étant située dans la position d'utilisation du fer à repasser à vapeur au-dessus ou derrière le réservoir à eau (3), et comportant un filtre (19) agencé entre l'entrée d'eau et le réservoir à eau (3) ou bien entre le réservoir à eau (3) et la chambre à vapeur, ce filtre étant traversé par l'eau en direction axiale,
    caractérisé en ce que seule une partie de l'eau du réseau traverse le filtre (19) tandis que l'autre partie parvient dans le réservoir à eau (3) ou dans la chambre à vapeur sans être filtrée, via une conduite de dérivation (25).
  2. Fer à repasser selon la revendication 1, caractérisé en ce que la proportion de l'eau filtrée s'élève de 30% à 70%.
  3. Fer à repasser selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la section de passage de la conduite de dérivation (25) est réglable.
  4. Fer à repasser selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la conduite de dérivation (25) est intégrée dans le filtre (19).
  5. Fer à repasser selon la revendication 1, caractérisé en ce que la totalité de la section de passage du filtre (19) reçoit de l'eau sur le côté entrée.
  6. Fer à repasser selon l'une quelconque des revendications précédentes, caractérisé en ce que la déminéralisation de l'eau a lieu en deux étapes successives, l'eau traversant tout d'abord pour la décarbonatation une couche (23) d'un matériau filtrant qui assure une déminéralisation sélective, et ensuite une couche (24) d'un matériau filtrant située au-dessous de la première, pour une déminéralisation complète, les deux couches filtrantes étant séparées l'une de l'autre par un tamis (22).
  7. Fer à repasser selon l'une quelconque des revendications précédentes, caractérisé en ce que pour le remplissage de l'eau dans la cartouche filtrante, il est prévu un manchon de remplissage (17, 27).
  8. Fer à repasser selon la revendication 1, caractérisé en ce que la cartouche filtrante (11) est conçue de telle façon que la vitesse de filtrage maximum s'élève à environ 1 cm/s.
  9. Fer à repasser selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce qu'il est prévu parallèlement à la cartouche filtrante (1 1) un conduit de mise à l'air (12), qui est relié au réservoir à eau (3).
  10. Fer à repasser selon la revendication 7, caractérisé en ce que le manchon de remplissage (27) est agencé sur le boîtier de saisie.
  11. Fer à repasser selon la revendication 7, caractérisé en ce que le manchon de remplissage (17) est réalisé sur la cartouche filtrante (11).
  12. Fer à repasser selon la revendication 7, caractérisé en ce que le manchon de remplissage (17 ; 27) est constitué de plusieurs bagues engagées les unes dans les autres (14,.15, 16 ; 28, 29, 30), et en ce qu'il peut être déployé de manière télescopique.
  13. Fer à repasser selon la revendication 12, caractérisé en ce que le manchon de remplissage (17, 27) est pourvu de marques, qui correspondent à des plages de dureté différentes pour l'eau.
  14. Fer à repasser selon la revendication 7, caractérisé en ce que le manchon de remplissage (17, 27) est pourvu d'un couvercle (18).
  15. Cartouche filtrante pour un fer à repasser à vapeur selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend un boîtier sensiblement cylindrique, ouvert aux deux extrémités, à l'extrémité supérieure étant agencé un manchon de remplissage (17), qui est constitué de préférence de plusieurs bagues (14, 15, 16) disposées les unes au-dessus des autres et susceptibles d'être déployées de façon télescopique, et en ce qu'il est prévu dans sa cavité intérieure et transversalement à l'axe longitudinal au moins deux tamis (20, 21), entre lesquels est remplie au moins une couche d'un matériau filtrant pour la déminéralisation de l'eau.
  16. Cartouche filtrante selon la revendication 15, caractérisée en ce qu'il est prévu une conduite de dérivation (25) qui traverse axialement le matériau filtrant.
  17. Cartouche filtrante selon l'une ou l'autre des revendications 15 et 16, caractérisée en ce qu'il est prévu un tamis intermédiaire (22), qui sépare l'une de l'autre deux couches filtrantes (23, 24).
EP92121280A 1992-02-06 1992-12-15 Fer à repasser avec cartouche filtrante remplaçable Expired - Lifetime EP0554549B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4203414 1992-02-06
DE4203414A DE4203414A1 (de) 1992-02-06 1992-02-06 Dampfbuegeleisen mit austauschbarem filtereinsatz

Publications (2)

Publication Number Publication Date
EP0554549A1 EP0554549A1 (fr) 1993-08-11
EP0554549B1 true EP0554549B1 (fr) 1996-04-10

Family

ID=6451088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121280A Expired - Lifetime EP0554549B1 (fr) 1992-02-06 1992-12-15 Fer à repasser avec cartouche filtrante remplaçable

Country Status (4)

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EP (1) EP0554549B1 (fr)
AT (1) ATE136602T1 (fr)
DE (2) DE4203414A1 (fr)
ES (1) ES2085546T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1148478C (zh) * 1997-10-13 2004-05-05 松下电器产业株式会社 水蒸汽电熨斗
PT1616992E (pt) * 2004-07-15 2010-02-18 Tenacta Group Spa Aparelho de engomar com um filtro
CN105518209B (zh) 2013-09-06 2018-12-14 皇家飞利浦有限公司 具有过滤器单元的蒸汽处理器、过滤器芯和输送蒸汽的方法
CN103643469A (zh) * 2013-12-23 2014-03-19 张有敬 一种带过滤网的蒸汽熨斗
FR3076300B1 (fr) * 2017-12-28 2019-11-22 Seb S.A. Appareil de repassage comportant une branche de derivation de vapeur
EP3670736A1 (fr) * 2018-12-21 2020-06-24 Aktiebolaget Electrolux Fer doté d'un adoucisseur d'eau
CN111576020B (zh) * 2020-04-18 2022-07-15 卓力电器集团有限公司 一种具有组合式蒸汽控制系统的电熨斗

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1022697A (en) * 1963-11-13 1966-03-16 Morphy Richards Cray Ltd Improvements in or relating to portable appliances for example, steam irons adapted for the heating of water
EP0135484B1 (fr) * 1983-07-18 1988-12-28 ELWATT S.r.l. Générateurs de vapeur à utilisation avec des appareils ménagers comme un fer à repasser à vapeur
DE3729800A1 (de) * 1987-09-05 1989-03-16 Krups Stiftung Elektrisch betriebenes dampfbuegeleisen

Also Published As

Publication number Publication date
DE4203414A1 (de) 1993-08-12
DE59205968D1 (de) 1996-05-15
ATE136602T1 (de) 1996-04-15
EP0554549A1 (fr) 1993-08-11
ES2085546T3 (es) 1996-06-01

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