WO2001044559A1 - Steam iron plunger with ceramic rod - Google Patents

Steam iron plunger with ceramic rod Download PDF

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Publication number
WO2001044559A1
WO2001044559A1 PCT/FR2000/003410 FR0003410W WO0144559A1 WO 2001044559 A1 WO2001044559 A1 WO 2001044559A1 FR 0003410 W FR0003410 W FR 0003410W WO 0144559 A1 WO0144559 A1 WO 0144559A1
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WO
WIPO (PCT)
Prior art keywords
plug
water
ceramic
iron
drip
Prior art date
Application number
PCT/FR2000/003410
Other languages
French (fr)
Inventor
Sylvain Maudhuit
Jean Louis Brandolini
Original Assignee
Seb S.A.
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 Seb S.A. filed Critical Seb S.A.
Priority to AU25228/01A priority Critical patent/AU2522801A/en
Publication of WO2001044559A1 publication Critical patent/WO2001044559A1/en

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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
    • 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

Definitions

  • the present invention relates to electric steam irons comprising a water tank and a chamber where the vaporization of water is almost instantaneous, the water being supplied slowly by a drip from the reservoir to the vaporization chamber.
  • the drip device comprises a needle which is applied sealingly on a seat to stop the flow of water, for example by patent DE3644027.
  • the needle has at the end a slightly conical needle which is introduced into the nozzle of the seat so as to ensure a progressive closing.
  • the plug is tubular and laterally has an orifice communicating or not with the reservoir depending on the position of the plug.
  • the plug has on a generator a groove of variable section, where water can pass through the nozzle with a flow rate dependent on the position of the plug.
  • the bushels are frequently made of plastic material, this scaling slower than metals and being more economical, but they must also withstand ambient heat.
  • materials which are quite suitable such as PPS (Poly Phenylene Sulfide), or PTFE (Poly Tetra Fluoro Ethylene) or certain alloys.
  • PPS Poly Phenylene Sulfide
  • PTFE Poly Tetra Fluoro Ethylene
  • the object of the invention below is a steam iron comprising a drip plug, the plug sliding in an elastomer nozzle, improved from the point of view of scaling, resistance to temperature endurance of high use, and also of the regularity and constancy of the flow according to the conditions of manufacture, use, and the quality of the water used.
  • the object of the invention is achieved by an electric steam iron comprising a water tank and a chamber where the vaporization of the water is almost instantaneous, the water being supplied slowly by a drip plug from the reservoir to the vaporization chamber, the plug sliding in an elastomer nozzle, because the plug is solid, in a hard mineral material, of low thermal conductivity such as a ceramic or a glass.
  • massive used above is understood to mean a one-piece piece made of a material that is homogeneous from the heart to the surface.
  • the use of a solid ceramic or a glass to manufacture the bushel allows on the contrary a good resistance to high operating temperature, the heart of the bushel being itself very hard and heat resistant. Therefore, the elastomer nozzle which surrounds the plug in a diametral plane does not deform it by creep in cases of prolonged use at high operating temperatures. Thanks to its hardness, the surface is also more resistant to abrasion.
  • the surface condition is better than that of a molded part made of heat-resistant plastic, for example made of PPS. Numerous tests have in fact shown that the scale which deposits becomes encrusted there less than on the plastic parts, which space cleaning. In addition, glass or ceramic are perfectly inert to chemical descaling agents and the surface does not deteriorate following repeated cleaning. It is also noted that the assembly of the bushel and its nozzle joint constitutes a drip whose flow is more constant, with equivalent adjustment, from one iron to another and according to the local conditions of use. The good dimensional behavior of the bushel is a factor of regularity over time. The better wettability promotes a smoother and more independent flow of the water quality. Wettability is therefore less involved in regulating the flow rate, which then essentially depends on the well-controlled bushel geometry.
  • the bushel is made of ceramic.
  • small parts such as bushels can be obtained economically by injection into a mold and they can even maintain a surface condition identical to that of the mold cavities, which can be very neat.
  • the ceramic is an alumina.
  • Alumina is actually an inexpensive and very common material.
  • ceramic materials that can be envisaged in the context of the invention, there may be mentioned, by way of nonlimiting example, steatites, zirconia, silicon nitrides, as well as compositions of materials of this type and compositions comprising other metal oxides.
  • the alumina has traces or a small percentage of an inorganic metallic compound improving the wettability.
  • Alumina has a greater surface energy, about ten times more, per compared to that of plastics, which promotes wettability. This can be further increased by an alumina composition, which contains traces or a small percentage of an inorganic metallic compound, for example of iron oxide, which has a surface energy approximately twice that of alumina. .
  • the bushel is made of mineral glass.
  • the mineral glasses largely resist the temperatures of use of the iron and have a very good surface condition.
  • the plug is of generally cylindrical shape and has a groove located on a generator in the vicinity of the nozzle joint.
  • the plug has fixing lugs at the end remote from the vaporization chamber.
  • Figure 1 is a partial section through a vertical longitudinal plane of an iron according to the invention.
  • FIG. 2 is a detailed perspective view of the valve rod.
  • Figure 3 is a projection view on the vertical longitudinal plane of the plug.
  • Figure 4 is a section of the plug by the same plane.
  • Figure 5 is a side view of the plug.
  • the iron comprises a soleplate 1, the lower face of which is in contact with the linen.
  • This sole carries a heating block 2 provided with a heating element 3.
  • the heating block comprises a vaporization 4 of the water intended to produce the vapor.
  • This chamber 4 is closed by a closure plate 5 having an orifice 6 for supplying water by a drip.
  • a water tank 7 having a filling orifice closed by a sliding cover 8 is included in the body 9 of the iron.
  • the drip comprises a plug 10, preferably made of ceramic alumina, supported by a rod 11 plastic.
  • the plug slides in the lip 130 of an elastomer bellows seal 13 which provides the hydraulic connection and the seal between the reservoir 7 and the vaporization chamber 4.
  • the elastomer is preferably a silicone.
  • the plug 10 has at its end on the side of the vaporization chamber, a groove 101 (FIGS. 4.5) arranged longitudinally along a generator and opening at the end of the plug. At the other end, the plug has two lugs 102 (FIGS. 3.5) which click into the legs of a fork 111 (FIG. 2) from the end of the rod 11.
  • the assembly of the plug 10 and its rod 11 is recalled down along its axis by a light spring 14.
  • This assembly is supported on a thick and rigid transverse wall 131 of the bellows seal 13.
  • This wall perpendicular to the axis of the bellows has an outer groove 132 where the control means of the plug apply by causing an axial displacement of the plug 10.
  • the plug 10 crosses the transverse wall with a slight clearance which does not prevent the passage of water. This passage is also facilitated by a hole 133.
  • the rod 11 is guided at the other end and slides in a part 15 extractable with the entire plug.
  • a part 16 linked to the part 15 and snapped into the body 9 of the iron immobilizes the part 15 in translation.
  • Lugs 1 12 ( Figure 2) at the end of the rod 1 1 retain it, by lights not shown, in the part 15 during extraction.
  • the user fills the water tank 7 by opening the cover 8.
  • the iron being horizontal, the water reaches by gravity into the bellows 13, of which it crosses the transverse wall 131 through the hole 133, and reaches the lip 130.
  • the lip 130 and the bushel do not let the water pass. If the plug is raised by the control means acting on the groove 132, the groove 101 (FIG. 2) of the plug is in correspondence with the lip 130, which allows the water to bypass the lip 130, with a dependent flow. of the section of the groove 101. The water then flows along the end of the plug and drops drop by drop into the chamber 4 where it vaporizes.
  • the plug 10 which is clamped by the lip 130 may be subjected to high temperatures, especially if the iron is used dry at its highest temperature.
  • the bushel made of a ceramic obtained at temperatures much higher than those of the operation of the iron does not deform under the combined action of heat and local pressure.
  • the tightening of the lip 130 on the plug 10 can be reduced, without having to compensate for any deformation, which leads to a longer service life.
  • the low thermal conductivity of the ceramic is a factor favorable to slow scaling. Compared to the usual plastic bushels like PPS, there is a gain of around 20% on the quantity of water distributed with equal scaling.
  • the plug 10 is made of glass. This insulating material is also obtained at temperatures much higher than those of the operation of the iron. Benefits similar to those of ceramic bushels are obtained.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Lift Valve (AREA)

Abstract

The invention concerns a steam iron comprising a water reservoir (7) and a chamber (4) wherein water evaporation is almost instantaneous, the water being slowly supplied by a drip-feed with a plunger from the reservoir (7) to the evaporation chamber (4). The invention is characterised in that the active end of the plunger (10) which slides in the drip-nozzle is solid, made of a hard mineral material, with low thermal conductivity such as ceramic or glass.

Description

BOISSEAU DE FER A REPASSER A TIGE CERAMIQUE IRON BURNER WITH CERAMIC ROD
La présente invention concerne les fers à repasser électriques à vapeur comportant un réservoir d'eau et une chambre où la vaporisation de l'eau est quasi instantanée, l'eau étant alimentée lentement par un goutte à goutte du réservoir vers la chambre de vaporisation.The present invention relates to electric steam irons comprising a water tank and a chamber where the vaporization of water is almost instantaneous, the water being supplied slowly by a drip from the reservoir to the vaporization chamber.
On connaît les fers à vapeur où le dispositif goutte à goutte comporte un pointeau qui vient s'appliquer de façon étanche sur un siège pour arrêter le flux d'eau, par exemple par le brevet DE3644027. La plupart du temps le pointeau comporte en bout une aiguille légèrement conique qui s'introduit dans l'ajutage du siège de façon à assurer une fermeture progressive.Steam irons are known where the drip device comprises a needle which is applied sealingly on a seat to stop the flow of water, for example by patent DE3644027. Most of the time the needle has at the end a slightly conical needle which is introduced into the nozzle of the seat so as to ensure a progressive closing.
On connaît également, par exemple par les brevets FR2337780 ou FR2449157 ou FR2573783 ou FR2655667, les fers à vapeur dans lesquels le dispositif goutte à goutte comporte un boisseau cylindrique coulissant dans un ajutage en élastomère dont l'orifice s'ajuste sur une section diamétrale du boisseau.Also known, for example by patents FR2337780 or FR2449157 or FR2573783 or FR2655667, steam irons in which the drip device comprises a cylindrical plug sliding in an elastomer nozzle whose orifice adjusts on a diametral section of the bushel.
Dans une réalisation, le boisseau est tubulaire et comporte latéralement un orifice communicant ou non avec le réservoir suivant la position du boisseau.In one embodiment, the plug is tubular and laterally has an orifice communicating or not with the reservoir depending on the position of the plug.
Dans une autre réalisation, le boisseau comporte sur une génératrice une rainure de section variable, où l'eau peut passer dans l'ajutage avec un débit dépendant de la position du boisseau.In another embodiment, the plug has on a generator a groove of variable section, where water can pass through the nozzle with a flow rate dependent on the position of the plug.
Les boisseaux sont fréquemment en matière plastique, celle ci s'entartrant moins vite que les métaux et étant plus économique, mais ils doivent aussi résister à la chaleur ambiante. On connaît des matières qui conviennent assez bien telles que le PPS (Poly Phénylène Sulfide), ou des PTFE (Poly Tetra Fluoro Ethylène) ou certains alliages. Cependant, dans les tests de longue durée à température d'utilisation élevée, on constate de légères déformations du boisseau en plastique à l'endroit de l'ajutage, et ces déformations sont suffisantes pour perturber ensuite le coulissement du boisseau dans l'ajutage, et modifier les débits.The bushels are frequently made of plastic material, this scaling slower than metals and being more economical, but they must also withstand ambient heat. We know of materials which are quite suitable such as PPS (Poly Phenylene Sulfide), or PTFE (Poly Tetra Fluoro Ethylene) or certain alloys. However, in long-term tests at high operating temperature, slight deformations of the plastic plug are observed at the point of the nozzle, and these deformations are sufficient to then disturb the sliding of the valve in the nozzle, and modify the flow rates.
Par ailleurs, suivant les conditions de fabrication et les conditions locales d'utilisation on constate une dispersion des débits des fers assez importante pour que, par précaution et pour éviter des crachements, on soit amené à limiter le débit de vapeur maximal à une valeur inférieure aux possibilités réelles du fer.Furthermore, depending on the manufacturing conditions and the local conditions of use, there is a fairly large dispersion of the flow rates of the irons. so that, as a precaution and to avoid spitting, it is necessary to limit the maximum steam flow to a value lower than the real possibilities of the iron.
L'objet de l'invention ci après est un fer à repasser à vapeur comportant un goutte à goutte à boisseau, le boisseau coulissant dans un ajutage en élastomère, amélioré du point de vue de l'entartrage, de la tenue en endurance en température d'utilisation élevée, et aussi de la régularité et la constance du débit en fonction des conditions de fabrication, d'usage, et de la qualité de l'eau utilisée. Principalement le but de l'invention est atteint par un fer à repasser électrique à vapeur comportant un réservoir d'eau et une chambre où la vaporisation de l'eau est quasi instantanée, l'eau étant alimentée lentement par un goutte à goutte à boisseau du réservoir vers la chambre de vaporisation, le boisseau coulissant dans un ajutage en élastomère, du fait que le boisseau est massif, en une matière minérale dure, de faible conductivité thermique telle qu'une céramique ou un verre.The object of the invention below is a steam iron comprising a drip plug, the plug sliding in an elastomer nozzle, improved from the point of view of scaling, resistance to temperature endurance of high use, and also of the regularity and constancy of the flow according to the conditions of manufacture, use, and the quality of the water used. Mainly the object of the invention is achieved by an electric steam iron comprising a water tank and a chamber where the vaporization of the water is almost instantaneous, the water being supplied slowly by a drip plug from the reservoir to the vaporization chamber, the plug sliding in an elastomer nozzle, because the plug is solid, in a hard mineral material, of low thermal conductivity such as a ceramic or a glass.
Le terme massif utilisé ci dessus s'entend pour une pièce monobloc constituée d'une matière homogène du cœur à la surface.The term massive used above is understood to mean a one-piece piece made of a material that is homogeneous from the heart to the surface.
Des essais ont été menés avec différents matériaux tels que des revêtements PTFE , ou des revêtements d'oxydes céramiques, ou des dépôts métalliques sur le plastique du boisseau. Il s'est avéré qu'aucune de ces solutions n'apportait d'amélioration sensible de la qualité du goutte à goutte. En effet, les dépôts métalliques même sophistiqués comme les dépôts d'or en couche fine sur le boisseau plastique s'entartrent beaucoup trop facilement, les dépôts d'oxydes métalliques sur plastique sont trop poreux et ne conviennent pas pour le coulissement doux du boisseau, et les revêtements par une matière telle que le PTFE n'apportent pas d'amélioration sensible.Tests have been carried out with different materials such as PTFE coatings, or ceramic oxide coatings, or metallic deposits on the plastic of the plug. It turned out that none of these solutions brought a significant improvement in the quality of the drip. Indeed, even sophisticated metallic deposits such as gold deposits in a thin layer on the plastic bushel scale too easily, deposits of metal oxides on plastic are too porous and are not suitable for smooth sliding of the bushel, and coatings with a material such as PTFE provide no significant improvement.
Or, bien que, à priori, plus difficile à réaliser, l'utilisation d'une céramique massive ou d'un verre pour fabriquer le boisseau permet au contraire une bonne tenue en température d'utilisation élevée, le cœur du boisseau étant lui même très dur et résistant à la chaleur. De ce fait, l'ajutage en élastomère qui entoure le boisseau dans un plan diamétral ne le déforme pas par fluage dans des cas d'utilisation prolongée à haute température d'utilisation. Grâce à sa dureté la surface résiste aussi mieux à l'abrasion.However, although, a priori, more difficult to achieve, the use of a solid ceramic or a glass to manufacture the bushel allows on the contrary a good resistance to high operating temperature, the heart of the bushel being itself very hard and heat resistant. Therefore, the elastomer nozzle which surrounds the plug in a diametral plane does not deform it by creep in cases of prolonged use at high operating temperatures. Thanks to its hardness, the surface is also more resistant to abrasion.
Dans la pratique, il s'est en fait avéré que l'état de surface est meilleur que celui d'une pièce moulée en plastique résistante à la chaleur, par exemple en PPS. De nombreux essais ont en effet montré que le tartre qui se dépose s'y incruste moins que sur les pièces en matière plastique, ce qui espace les nettoyages. Par ailleurs le verre ou la céramique sont parfaitement inertes aux agents chimiques de détartrage et la surface ne se détériore pas à la suite de nettoyages répétés. On constate aussi que l'ensemble du boisseau et de son joint d'ajutage constitue un goutte à goutte dont le débit est plus constant, à réglage équivalent, d'un fer à l'autre et suivant les conditions locales d'utilisation. La bonne tenue dimensionnelle du boisseau est un facteur de régularité dans le temps. La meilleure mouillabilité favorise un écoulement plus régulier et plus indépendant de la qualité de l'eau. La mouillabilité intervient alors moins dans la régulation du débit, lequel dépend alors essentiellement de la géométrie du boisseau bien maîtrisée.In practice, it has in fact been found that the surface condition is better than that of a molded part made of heat-resistant plastic, for example made of PPS. Numerous tests have in fact shown that the scale which deposits becomes encrusted there less than on the plastic parts, which space cleaning. In addition, glass or ceramic are perfectly inert to chemical descaling agents and the surface does not deteriorate following repeated cleaning. It is also noted that the assembly of the bushel and its nozzle joint constitutes a drip whose flow is more constant, with equivalent adjustment, from one iron to another and according to the local conditions of use. The good dimensional behavior of the bushel is a factor of regularity over time. The better wettability promotes a smoother and more independent flow of the water quality. Wettability is therefore less involved in regulating the flow rate, which then essentially depends on the well-controlled bushel geometry.
Dans une version préférentielle le boisseau est en céramique.In a preferred version the bushel is made of ceramic.
En effet les petites pièces telles que les boisseaux peuvent être obtenues de façon économique par injection dans un moule et ils peuvent même garder un état de surface identique à celui des empreintes du moule, lesquelles peuvent être très soignées.Indeed, small parts such as bushels can be obtained economically by injection into a mold and they can even maintain a surface condition identical to that of the mold cavities, which can be very neat.
De préférence la céramique est une alumine.Preferably the ceramic is an alumina.
L'alumine est en fait une matière peu coûteuse et très courante. Parmi d'autres matières céramiques envisageables dans le cadre de l'invention on peut citer à titre d'exemple non limitatif les stéatites, les zircones, les nitrures de silicium, ainsi que des compositions de matières de ce type et des compositions comprenant d'autres oxydes métalliques.Alumina is actually an inexpensive and very common material. Among other ceramic materials that can be envisaged in the context of the invention, there may be mentioned, by way of nonlimiting example, steatites, zirconia, silicon nitrides, as well as compositions of materials of this type and compositions comprising other metal oxides.
De préférence l'alumine comporte des traces ou un faible pourcentage d'un composé métallique inorganique améliorant la mouillabilité.Preferably the alumina has traces or a small percentage of an inorganic metallic compound improving the wettability.
L'alumine a une énergie de surface plus grande, d'environ dix fois plus, par rapport a celle des matières plastiques, ce qui favorise la mouillabilité. Celle ci peut encore être augmentée par une composition d'alumine, qui comporte des traces ou un faible pourcentage d'un composé métallique inorganique, par exemple d'oxyde de fer, lequel a une énergie de surface environ double de celle de l'alumine.Alumina has a greater surface energy, about ten times more, per compared to that of plastics, which promotes wettability. This can be further increased by an alumina composition, which contains traces or a small percentage of an inorganic metallic compound, for example of iron oxide, which has a surface energy approximately twice that of alumina. .
Dans une autre version le boisseau est en verre minéral.In another version the bushel is made of mineral glass.
Les verres minéraux résistent largement aux températures d'utilisation du fer à repasser et possèdent un très bon état de surface.The mineral glasses largely resist the temperatures of use of the iron and have a very good surface condition.
De préférence le boisseau est de forme générale cylindrique et comporte une rainure localisée sur une génératrice au voisinage du joint d'ajutage.Preferably the plug is of generally cylindrical shape and has a groove located on a generator in the vicinity of the nozzle joint.
La fabrication d'un tel boisseau en céramique ou en verre est plus facile que celle d'un boisseau présentant un évidemment axial et des perforations radiales.The manufacture of such a ceramic or glass bushel is easier than that of a bushel having an axial recess and radial perforations.
De préférence le boisseau comporte des ergots de fixation à l'extrémité éloignée de la chambre de vaporisation.Preferably the plug has fixing lugs at the end remote from the vaporization chamber.
Ces ergots permettent la fixation du boisseau sur une tige de commande et sont facilement réalisables.These pins allow the fixing of the plug on a control rod and are easily achievable.
L'invention sera mieux comprise au vu des exemples ci après et des dessins annexés. La figure 1 est une section partielle par un plan longitudinal vertical d'un fer selon l'invention.The invention will be better understood on the basis of the examples below and the attached drawings. Figure 1 is a partial section through a vertical longitudinal plane of an iron according to the invention.
La figure 2 est une vue de détail en perspective de la tige porte boisseau.Figure 2 is a detailed perspective view of the valve rod.
La figure 3 est une vue en projection sur le plan longitudinal vertical du boisseau. La figure 4 est une section du boisseau par ce même plan.Figure 3 is a projection view on the vertical longitudinal plane of the plug. Figure 4 is a section of the plug by the same plane.
La figure 5 est une vue latérale du boisseau.Figure 5 is a side view of the plug.
Dans une réalisation préférentielle le fer comporte une semelle 1 dont la face inférieure est en contact avec le linge. Cette semelle porte un bloc de chauffe 2 muni d'un élément chauffant 3. Le bloc de chauffe comporte une chambre de vaporisation 4 de l'eau destinée à produire la vapeur. Cette chambre 4 est fermée par une plaque de fermeture 5 présentant un orifice 6 d'alimentation en eau par un goutte à goutte. Un réservoir d'eau 7 présentant un orifice de remplissage fermé par un opercule coulissant 8 est inclus dans le corps 9 du fer.In a preferred embodiment, the iron comprises a soleplate 1, the lower face of which is in contact with the linen. This sole carries a heating block 2 provided with a heating element 3. The heating block comprises a vaporization 4 of the water intended to produce the vapor. This chamber 4 is closed by a closure plate 5 having an orifice 6 for supplying water by a drip. A water tank 7 having a filling orifice closed by a sliding cover 8 is included in the body 9 of the iron.
Le goutte à goutte comporte un boisseau 10, de préférence en alumine céramique, supporté par une tige 1 1 en matière plastique. Le boisseau coulisse dans la lèvre 130 d'un joint à soufflet en élastomère 13 qui assure la liaison hydraulique et l'étanchéité entre le réservoir 7 et la chambre de vaporisation 4. L'élastomère est de préférence un silicone. Le boisseau 10 comporte à son extrémité du coté de la chambre de vaporisation, une gorge 101 (figures 4,5) disposée longitudinalement le long d'une génératrice et débouchant à l'extrémité du boisseau. A l'autre extrémité le boisseau comporte deux ergots 102 (figures 3,5) qui se cliquent dans les pattes d'une fourche 111 (figure 2) de l'extrémité de la tige 11.The drip comprises a plug 10, preferably made of ceramic alumina, supported by a rod 11 plastic. The plug slides in the lip 130 of an elastomer bellows seal 13 which provides the hydraulic connection and the seal between the reservoir 7 and the vaporization chamber 4. The elastomer is preferably a silicone. The plug 10 has at its end on the side of the vaporization chamber, a groove 101 (FIGS. 4.5) arranged longitudinally along a generator and opening at the end of the plug. At the other end, the plug has two lugs 102 (FIGS. 3.5) which click into the legs of a fork 111 (FIG. 2) from the end of the rod 11.
L'ensemble du boisseau 10 et sa tige 11 est rappelé vers le bas suivant son axe par un ressort léger 14. Cet ensemble s'appuie sur une paroi transversale épaisse et rigide 131 du joint à soufflet 13. Cette paroi perpendiculaire à l'axe du soufflet comporte une rainure extérieure 132 où les moyens de commande du boisseau s'appliquent en provoquant un déplacement axial du boisseau 10. Le boisseau 10 traverse la paroi transversale avec un léger jeu qui n'empêche pas le passage de l'eau. Ce passage est par ailleurs facilité par un perçage 133.The assembly of the plug 10 and its rod 11 is recalled down along its axis by a light spring 14. This assembly is supported on a thick and rigid transverse wall 131 of the bellows seal 13. This wall perpendicular to the axis of the bellows has an outer groove 132 where the control means of the plug apply by causing an axial displacement of the plug 10. The plug 10 crosses the transverse wall with a slight clearance which does not prevent the passage of water. This passage is also facilitated by a hole 133.
La tige 11 est guidée à l'autre extrémité et coulisse dans une pièce 15 extractible avec l'ensemble du boisseau. Une pièce 16 liée à la pièce 15 et encliquetée dans le corps 9 du fer immobilise la pièce 15 en translation. Des ergots 1 12 (figure 2) en extrémité de la tige 1 1 la retiennent, par des lumières non représentées, dans la pièce 15 lors de l'extraction.The rod 11 is guided at the other end and slides in a part 15 extractable with the entire plug. A part 16 linked to the part 15 and snapped into the body 9 of the iron immobilizes the part 15 in translation. Lugs 1 12 (Figure 2) at the end of the rod 1 1 retain it, by lights not shown, in the part 15 during extraction.
L'utilisatrice remplit le réservoir d'eau 7 en ouvrant l'opercule 8. Le fer étant horizontal, l'eau parvient par gravité dans le soufflet 13 dont elle traverse la paroi transversale 131 par le trou 133, et atteint la lèvre 130.The user fills the water tank 7 by opening the cover 8. The iron being horizontal, the water reaches by gravity into the bellows 13, of which it crosses the transverse wall 131 through the hole 133, and reaches the lip 130.
Lorsque le boisseau est en position basse comme sur la figure 1 , la lèvre 130 et le boisseau ne laissent pas passer l'eau. Si le boisseau est relevé par les moyens de commande agissant sur la rainure 132, la rainure 101 (figure 2) du boisseau est en correspondance avec la lèvre 130, ce qui permet à l'eau de contourner la lèvre 130, avec un débit dépendant de la section de la rainure 101. L'eau coule alors le long de l'extrémité du boisseau et tombe goutte à goutte dans la chambre 4 où elle se vaporise.When the plug is in the low position as in FIG. 1, the lip 130 and the bushel do not let the water pass. If the plug is raised by the control means acting on the groove 132, the groove 101 (FIG. 2) of the plug is in correspondence with the lip 130, which allows the water to bypass the lip 130, with a dependent flow. of the section of the groove 101. The water then flows along the end of the plug and drops drop by drop into the chamber 4 where it vaporizes.
En cas d'utilisation prolongée dans la même position, le boisseau 10 qui se trouve serré par la lèvre 130 peut être soumis à des températures élevées, surtout si le fer est utilisé à sec à sa plus haute température. Le boisseau réalisé en une céramique obtenue à des températures beaucoup plus élevées que celles du fonctionnement du fer ne se déforme pas sous l'action conjuguée de la chaleur et de la pression locale. Le serrage de la lèvre 130 sur le boisseau 10 peut être réduit, n'ayant à compenser aucune déformation, ce qui conduit à une durée de vie plus longue. Par ailleurs, la faible conductivité thermique de la céramique est un facteur favorable à un entartrage lent. Par rapport aux boisseaux en matière plastique usuelle comme le PPS on constate un gain de l'ordre de 20% sur la quantité d'eau distribuée à entartrage égal.In case of prolonged use in the same position, the plug 10 which is clamped by the lip 130 may be subjected to high temperatures, especially if the iron is used dry at its highest temperature. The bushel made of a ceramic obtained at temperatures much higher than those of the operation of the iron does not deform under the combined action of heat and local pressure. The tightening of the lip 130 on the plug 10 can be reduced, without having to compensate for any deformation, which leads to a longer service life. In addition, the low thermal conductivity of the ceramic is a factor favorable to slow scaling. Compared to the usual plastic bushels like PPS, there is a gain of around 20% on the quantity of water distributed with equal scaling.
Dans une autre réalisation le boisseau 10 est en verre. Ce matériau isolant est également obtenu à des températures très supérieures à celles du fonctionnement du fer à repasser. On obtient des avantages similaires à ceux des boisseaux en céramique. In another embodiment the plug 10 is made of glass. This insulating material is also obtained at temperatures much higher than those of the operation of the iron. Benefits similar to those of ceramic bushels are obtained.

Claims

REVENDICATIONS
1. Fer à repasser électrique à vapeur comportant un réservoir d'eau (7) et une chambre (4) où la vaporisation de l'eau est quasi instantanée, l'eau étant alimentée lentement par un goutte à goutte à boisseau du réservoir (7) vers la chambre de vaporisation (4), le boisseau (10) coulissant dans un ajutage en élastomère, caractérisé en ce que le boisseau (10) est massif, en une matière minérale dure, de faible conductivité thermique telle qu'une céramique ou un verre.1. Electric steam iron comprising a water tank (7) and a chamber (4) where the vaporization of the water is almost instantaneous, the water being supplied slowly by a drip plug from the tank ( 7) towards the vaporization chamber (4), the plug (10) sliding in an elastomer nozzle, characterized in that the plug (10) is solid, made of a hard mineral material, of low thermal conductivity such as a ceramic or a drink.
2. Fer à repasser selon la revendication 1 caractérisé en ce que le boisseau (10) est de forme générale cylindrique et comporte une rainure (101 ) localisée sur une génératrice au voisinage du joint d'ajutage.2. Iron according to claim 1 characterized in that the plug (10) is of generally cylindrical shape and has a groove (101) located on a generator in the vicinity of the nozzle joint.
3. Fer à repasser selon l'une des revendications précédentes caractérisé en ce que le boisseau (10) comporte des ergots (102) de fixation à l'extrémité éloignée de la chambre de vaporisation.3. Iron according to one of the preceding claims characterized in that the plug (10) comprises lugs (102) for fixing to the end remote from the vaporization chamber.
4. Fer à repasser selon l'une des revendications précédentes caractérisé en ce que le boisseau est en une alumine céramique.4. Iron according to one of the preceding claims, characterized in that the plug is made of ceramic alumina.
5. Fer à repasser selon la revendication 4 caractérisé en ce que l'alumine comporte des traces ou un faible pourcentage d'un composé métallique inorganique améliorant la mouillabilité. 5. Iron according to claim 4 characterized in that the alumina has traces or a small percentage of an inorganic metallic compound improving wettability.
PCT/FR2000/003410 1999-12-14 2000-12-06 Steam iron plunger with ceramic rod WO2001044559A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU25228/01A AU2522801A (en) 1999-12-14 2000-12-06 Steam iron plunger with ceramic rod

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915781A FR2802220B1 (en) 1999-12-14 1999-12-14 IRON BURNER WITH CERAMIC ROD
FR99/15781 1999-12-14

Publications (1)

Publication Number Publication Date
WO2001044559A1 true WO2001044559A1 (en) 2001-06-21

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Country Status (3)

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AU (1) AU2522801A (en)
FR (1) FR2802220B1 (en)
WO (1) WO2001044559A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2057247A1 (en) * 1969-11-21 1971-05-27 Gen Electric Electric steam iron
EP0014643A1 (en) * 1979-02-13 1980-08-20 Seb S.A. Water injection device for a steam iron, and relevant steam iron
EP0184496A1 (en) * 1984-11-23 1986-06-11 Seb S.A. Water injection device for a steam iron
JPH1099598A (en) * 1996-10-03 1998-04-21 Matsushita Electric Ind Co Ltd Steam iron
FR2766214A1 (en) * 1997-07-18 1999-01-22 Seb Sa IRON WITH DRIP PROTECTION DEVICE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2057247A1 (en) * 1969-11-21 1971-05-27 Gen Electric Electric steam iron
EP0014643A1 (en) * 1979-02-13 1980-08-20 Seb S.A. Water injection device for a steam iron, and relevant steam iron
EP0184496A1 (en) * 1984-11-23 1986-06-11 Seb S.A. Water injection device for a steam iron
JPH1099598A (en) * 1996-10-03 1998-04-21 Matsushita Electric Ind Co Ltd Steam iron
FR2766214A1 (en) * 1997-07-18 1999-01-22 Seb Sa IRON WITH DRIP PROTECTION DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09 31 July 1998 (1998-07-31) *

Also Published As

Publication number Publication date
FR2802220A1 (en) 2001-06-15
FR2802220B1 (en) 2002-01-18
AU2522801A (en) 2001-06-25

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