EP2746460B1 - Steam ironing appliance comprising a pressurised steam generator and an iron - Google Patents

Steam ironing appliance comprising a pressurised steam generator and an iron Download PDF

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Publication number
EP2746460B1
EP2746460B1 EP13192935.8A EP13192935A EP2746460B1 EP 2746460 B1 EP2746460 B1 EP 2746460B1 EP 13192935 A EP13192935 A EP 13192935A EP 2746460 B1 EP2746460 B1 EP 2746460B1
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EP
European Patent Office
Prior art keywords
steam
studs
expansion chamber
ironing apparatus
ironing
Prior art date
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Application number
EP13192935.8A
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German (de)
French (fr)
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EP2746460A3 (en
EP2746460A2 (en
Inventor
François Sulpice
Bertrand Couet
Xavier Chartoire
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SEB SA
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SEB SA
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Publication of EP2746460A2 publication Critical patent/EP2746460A2/en
Publication of EP2746460A3 publication Critical patent/EP2746460A3/en
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Publication of EP2746460B1 publication Critical patent/EP2746460B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F57/00—Supporting means, other than simple clothes-lines, for linen or garments to be dried or aired 
    • 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
    • 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
    • D06F75/20—Arrangements for discharging the steam 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
    • D06F75/38—Sole plates

Definitions

  • the present invention relates to a steam ironing appliance comprising a pressurized steam generator and an iron comprising an ironing sole surmounted by a body in which is provided a steam distribution circuit conveying the steam flow produced by the steam generator to steam outlet holes in the soleplate.
  • a steam ironing appliance comprising a pressurized steam generator connected to an iron by a cord, the iron comprising an ironing soleplate surmounted by a body comprising a circuit for distributing the steam to steam outlet holes in the soleplate.
  • Such an ironing appliance is provided with a pressurized steam generator which has the advantage of providing a powerful flow of steam through the steam outlet holes of the soleplate and very good ironing performance.
  • a pressurized steam generator which has the advantage of providing a powerful flow of steam through the steam outlet holes of the soleplate and very good ironing performance.
  • such an ironing appliance has the drawback of generating a flow of steam which is relatively noisy when it is emitted through the iron.
  • the documents DE3545753 A1 and US1799281A also disclose ironing apparatus.
  • the subject of the invention is a steam ironing appliance comprising a pressurized steam generator and an iron comprising an ironing soleplate surmounted by a body in which is formed a steam distribution circuit conveying the flow of steam produced by the steam generator towards steam outlet holes of the soleplate, characterized in that the steam distribution circuit comprises at least one expansion chamber comprising studs projecting from two facing surfaces.
  • the expansion chamber comprises several projecting studs arranged facing each other.
  • Such positioning of the studs facing each other has the advantage of optimizing the performance of the projecting studs in reducing turbulence.
  • the projecting studs rise over at least one third of the distance separating the two surfaces.
  • the projecting studs have a rounded outline, the outline of the studs having a minimum radius of curvature of 1.5 mm.
  • the studs have a frustoconical or cylindrical shape of revolution.
  • an intermediate layer d devoid of any obstacle, is provided between the projecting studs of the two surfaces arranged on either side of the vapor flow.
  • the intermediate layer d is flat and has a thickness of between 2 and 4 mm, the studs of the two facing surfaces extending as far as the edge of the intermediate layer d.
  • the body comprises a casting closed in its upper part by a lid, the expansion chamber comprising projecting studs carried by the casting and projecting studs carried by the lid.
  • Such a body in two parts has the advantage of facilitating the production of the steam distribution circuit and in particular of the projecting studs.
  • the studs are molded in the foundry and on the closure cover.
  • the expansion chamber is partially arranged in a cavity of the lid.
  • Such a feature makes it possible to obtain an expansion chamber with a large volume and passage section while retaining a foundry, and therefore an iron, with reduced lateral bulk.
  • the foundry contains a heating resistor.
  • Such a characteristic makes it possible in particular to contribute to the elimination of the condensates which may be transported by the flow of steam.
  • the steam distribution circuit is supplied with steam by a steam inlet orifice made in the lid, the expansion chamber locally having a maximum passage section more than thirty times greater than the passage section of the steam inlet orifice and more than ten times greater than the cumulative passage section of the steam distribution orifices arranged downstream of the expansion chamber.
  • the steam distribution circuit comprises a first expansion chamber arranged upstream of an overheating channel and a second expansion chamber arranged downstream of the overheating channel, the overheating having a reduced passage section compared to the passage section of the first and second expansion chambers.
  • the figure 1 represents an ironing appliance comprising a steam-generating base 100 and an iron 1 interconnected by a cord 101, the iron 1 conventionally comprising an ironing soleplate 2 surmounted by a case 3 made of plastic material incorporating a handle gripping.
  • the base 100 comprises an inclined plane on which the iron 1 can come to rest during inactive ironing phases and contains, in a manner known per se, a tank 102 for the production of steam under a pressure of the order of 4 to 6 bars, the tank 102 being supplied with water from a tank 103 by means of a pump 104.
  • the base 100 is connected to the domestic electrical network by an electrical wire 105 which allows both the electrical supply of the heating means of the tank 102, not shown in the figures, and the power supply to iron 1 through cord 101.
  • the soleplate 2 of the iron is surmounted by a heating body 4 comprising a foundry 5 closed in its upper part by a cover 6, the foundry 5 coming directly into contact with the soleplate 2.
  • the ironing sole 2 is provided with a first group 21 of steam outlet holes 20 arranged in a triangular arrangement close to the front tip of the ironing sole 2 and a second group 22 of steam outlet holes. steam 20 distributed over the central and rear part of the sole 2 according to two concentric networks separated by a strip of material 23 devoid of holes.
  • the first group 21 and second group 22 of steam outlet holes 20 are respectively supplied with steam by a first diffusion chamber 51 and a second diffusion chamber 52 formed on the underside of the foundry 5, the first and second diffusion 51, 52 being itself supplied with steam by distribution orifices 50, 54 which open onto the upper face of the foundry 5.
  • the upper face of the foundry 5 comprises a peripheral wall 55 and intermediate walls 56 coming into contact with the lid 6 to delimit different zones 11, 12, 13, 14, 15 of a steam distribution circuit, the peripheral wall 55 and the intermediate walls 56 being obtained directly from molding with the foundry 5, the cover 6 being attached by gluing to the walls 55, 56 and comprising openings 60 in which screws 64 engage, visible on the figure 5 , ensuring the maintenance of the cover 6 on the foundry 5.
  • the steam distribution circuit comprises a steam inlet orifice 62 provided in the lid 6, this orifice 62 having a small passage section and opening into a first expansion chamber 11 of the steam distribution circuit at the level of which the passage section increases greatly, this first expansion chamber 11 being arranged on the edge of the peripheral wall 55, close to the rear part of the foundry 5, and extending above a branch of a heating resistor 7 in made of U integrated in the foundry 5.
  • the first expansion chamber 11 then communicates with a superheating channel 12 whose role is to vaporize all of the condensates still present in the steam flow, the superheating channel 12 having a reduced passage section, substantially constant, and meandering in the foundry 5 over a length advantageously greater than 200 mm and preferably of the order of 300 mm.
  • the overheating channel 12 runs along the rear part of the peripheral wall 55 and meanders in the volume of the foundry 5 arranged next to the first expansion chamber 11, bypassing a boss 57 intended to receive a regulation thermostat of the heating resistor 7, then opens into a second expansion chamber 13, arranged in the front central part of the foundry 5, the role of which is to reduce the speed of the steam flow as much as possible.
  • the first and the second expansion chamber 11, 13 have a passage section more than thirty times greater than the passage section of the orifice 62 for the steam inlet and more than ten times greater than the sum of the passage sections of the steam distribution orifices 50, 54.
  • the passage section of the steam inlet orifice 62 is of the order of 10 mm 2
  • the passage section of the expansion chambers 11, 13 is of the order of 500 mm 2
  • the passage section of the overheating channel 12 is of the order of 80 mm 2
  • the cumulative passage section of the steam distribution orifices 50, 54 is of the order of 40 mm 2 .
  • the first and second chambers 11, 13 are advantageously arranged partly in the volume of the foundry 5 and partly in a cavity 61, 63 formed in the closure cover 6, visible on the picture 2 .
  • the steam distribution circuit comprises protruding studs 58, 65 forming obstacles to the flow of steam circulating in the steam distribution circuit, these studs 58, 65 making it possible to limit turbulence and therefore noise in the steam distribution circuit.
  • pads 58, 65 have a rounded shape and are advantageously evenly distributed between the foundry 5 and the cover 6, the first expansion chamber 11 and the second expansion chamber 13 each comprising more than ten pads 58 rising in column from an upper surface of the foundry 5, the studs 58 being spaced from each other by less than 1 cm.
  • the cover 6 comprises, opposite each stud 58 of the foundry 5, a stud 65 extending in the direction of the foundry 5 from a lower surface of the cover 6, a free space of a few millimeters being provided between the upper ends of the studs 58 supported by the foundry 5 and the lower ends of the studs 65 of the cover 6 so that there results an intermediate layer in the steam distribution circuit in which the steam can circulate without encountering obstacles.
  • the studs 58, 65 are molded in the foundry 5 and in the cover 6 and have a slightly frustoconical shape with an angle ⁇ , illustrated on the figure 5 , of the order of 12°, each stud 58, 65 comprising a rounded upper end having a radius greater than 1.5 mm.
  • the height of the studs 58, 65 is adapted so that the layer d, devoid of any obstacle, is flat and has a thickness of between 2 and 4 mm and preferably of the order of 2.5 mm.
  • the overheating channel 12 is also provided with studs 58, 65 projecting in the zones subject to the formation of turbulence, and in particular near the boss 57, these studs 58, 65 having the same characteristics as the studs arranged in the first and second expansion chambers 11, 13.
  • the second chamber of trigger 13 communicates with a steam distribution device making it possible, in a manner known per se, to send the steam either to all of the first and second groups of steam outlet holes 20 of the soleplate, or only to the first group 21 steam outlet holes in the soleplate 2.
  • the steam distribution device which will only be described briefly in the following description, uses the operating principle of the steam distribution device described in detail in the patent application EP 2 503 052 .
  • This steam distribution device comprises in particular a main duct 16 connecting the second expansion chamber 13 to a front diffusion chamber 14 which supplies steam to the first group 21 of steam outlet holes 20 through the orifices 50 passing through the foundry 5 and comprises a vertical chimney 16A opening into a steam distribution chamber 17 communicating with two lateral distribution chambers 15 which supply steam to the second group 22 of steam outlet holes 20 through the orifices 54 passing through the foundry 5.
  • the steam distribution device also comprises a hemispherical seal 9 which, at rest, occupies the position illustrated in solid lines on the figure 5 , in which the steam coming from the second expansion chamber 13 passes freely through the main duct 16 and through the vertical chimney 16A then is diffused towards the first and second groups 21, 22 of steam outlet holes 20.
  • the joint 9 By pressing a button 30 arranged at the front of the handle of the iron 1, the joint 9 is moved into a position illustrated in dotted line on the figure 5 , in which the seal 9 closes off the outlet of the vertical chimney 16A and prevents the diffusion of steam towards the second group 22 of steam outlet holes 21 thus making it possible to send the entire flow of steam to the first group 21 of 20 steam outlet holes located at the front of the soleplate.
  • the ironing device thus produced has the advantage of comprising a steam distribution circuit allowing the diffusion of steam jets through the soleplate with a flow rate greater than 70 g/min without generating a significant noise.
  • the presence of projecting studs on either side of the steam flow in the areas of the distribution circuit usually subject to strong turbulence makes it possible to greatly reduce the turbulence and therefore to reduce the noise generated by the circulation of the flow. of steam.
  • the projecting studs also make it possible to reduce pressure drops and therefore to obtain a higher flow of steam through the soleplate.
  • the presence of projecting studs in the steam distribution circuit also has the advantage of improving the heat exchange between the foundry and any condensates transported by the steam so that the risk of condensates being expelled by the steam outlet holes is further diminished.
  • the iron may be without the steam distribution device, the steam leaving the second chamber then being sent to all of the steam outlet holes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Irons (AREA)

Description

La présente invention se rapporte à un appareil de repassage à la vapeur comportant un générateur de vapeur sous pression et un fer à repasser comportant une semelle de repassage surmontée d'un corps dans lequel est ménagé un circuit de distribution de vapeur acheminant le flux de vapeur produit par le générateur de vapeur vers des trous de sortie de vapeur ménagés dans la semelle.The present invention relates to a steam ironing appliance comprising a pressurized steam generator and an iron comprising an ironing sole surmounted by a body in which is provided a steam distribution circuit conveying the steam flow produced by the steam generator to steam outlet holes in the soleplate.

Il est connu, de la demande de brevet EP 2 503 052 déposée par la demanderesse, un appareil de repassage à la vapeur comportant un générateur de vapeur sous pression relié à un fer à repasser par un cordon, le fer à repasser comportant une semelle de repassage surmontée d'un corps comprenant un circuit de distribution de la vapeur vers des trous de sortie de vapeur ménagés dans la semelle.It is known, from the patent application EP 2 503 052 filed by the applicant, a steam ironing appliance comprising a pressurized steam generator connected to an iron by a cord, the iron comprising an ironing soleplate surmounted by a body comprising a circuit for distributing the steam to steam outlet holes in the soleplate.

Un tel appareil de repassage est muni d'un générateur de vapeur sous pression qui présente l'avantage de fournir un puissant flux de vapeur au travers des trous de sortie de vapeur de la semelle et de très bonnes performances de repassage. Cependant, un tel appareil de repassage présente l'inconvénient de générer un flux de vapeur qui est relativement bruyant lorsqu'il est émis au travers du fer à repasser. Les documents DE3545753 A1 et US1799281 A divulguent également des appareils de repassage.Such an ironing appliance is provided with a pressurized steam generator which has the advantage of providing a powerful flow of steam through the steam outlet holes of the soleplate and very good ironing performance. However, such an ironing appliance has the drawback of generating a flow of steam which is relatively noisy when it is emitted through the iron. The documents DE3545753 A1 and US1799281A also disclose ironing apparatus.

Aussi, un but de la présente invention est de remédier à ces inconvénients en proposant un appareil de repassage muni d'un générateur de vapeur sous pression dans lequel le bruit généré par la circulation du flux de vapeur au travers du fer à repasser est réduit. Un autre but de la présente invention est de proposer un appareil qui soit simple et économique à mettre en œuvre.Also, an object of the present invention is to remedy these drawbacks by proposing an ironing appliance fitted with a pressurized steam generator in which the noise generated by the circulation of the flow of steam through the iron is reduced. Another object of the present invention is to provide an apparatus which is simple and economical to implement.

A cet effet, l'invention a pour objet un appareil de repassage à la vapeur comportant un générateur de vapeur sous pression et un fer à repasser comportant une semelle de repassage surmontée d'un corps dans lequel est ménagé un circuit de distribution de vapeur acheminant le flux de vapeur produit par le générateur de vapeur vers des trous de sortie de vapeur de la semelle, caractérisé en ce que le circuit de distribution de la vapeur comporte au moins une chambre de détente comprenant des plots en saillie sur deux surfaces en regard.To this end, the subject of the invention is a steam ironing appliance comprising a pressurized steam generator and an iron comprising an ironing soleplate surmounted by a body in which is formed a steam distribution circuit conveying the flow of steam produced by the steam generator towards steam outlet holes of the soleplate, characterized in that the steam distribution circuit comprises at least one expansion chamber comprising studs projecting from two facing surfaces.

En effet, la demanderesse s'est rendu compte que, étonnamment, un tel positionnement des plots sur deux surfaces en regard disposées de part et d'autre du flux de vapeur permet de limiter les turbulences et donc le bruit généré par le flux de vapeur.Indeed, the applicant has realized that, surprisingly, such a positioning of the pads on two facing surfaces arranged on either side of the steam flow makes it possible to limit the turbulence and therefore the noise generated by the steam flow. .

Selon une autre caractéristique de l'invention, la chambre de détente comporte plusieurs plots en saillie disposés en vis-à-vis.According to another characteristic of the invention, the expansion chamber comprises several projecting studs arranged facing each other.

Un tel positionnement des plots en vis-à-vis présente l'avantage d'optimiser les performances des plots en saillie dans la réduction des turbulences.Such positioning of the studs facing each other has the advantage of optimizing the performance of the projecting studs in reducing turbulence.

Selon une autre caractéristique de l'invention, les plots en saillie s'élèvent sur au moins un tiers de la distance séparant les deux surfaces.According to another characteristic of the invention, the projecting studs rise over at least one third of the distance separating the two surfaces.

Selon une autre caractéristique de l'invention, les plots en saillie présentent un contour arrondi, le contour des plots présentant un rayon de courbure minimum de 1,5 mm.According to another characteristic of the invention, the projecting studs have a rounded outline, the outline of the studs having a minimum radius of curvature of 1.5 mm.

De tels plots arrondis permettent d'obtenir les meilleures performances dans la réduction des turbulences et du bruit.Such rounded pads make it possible to obtain the best performance in reducing turbulence and noise.

Selon une autre caractéristique de l'invention, les plots présentent une forme tronconique ou cylindrique de révolution.According to another characteristic of the invention, the studs have a frustoconical or cylindrical shape of revolution.

Selon une autre caractéristique de l'invention, une couche intermédiaire d, démunie de tout obstacle, est ménagée entre les plots en saillie des deux surfaces disposées de part et d'autre du flux de vapeur.According to another characteristic of the invention, an intermediate layer d, devoid of any obstacle, is provided between the projecting studs of the two surfaces arranged on either side of the vapor flow.

Selon une autre caractéristique de l'invention, la couche intermédiaire d est plane et présente une épaisseur comprise entre 2 et 4 mm, les plots des deux surfaces en regard s'étendant jusqu'en bordure de la couche intermédiaire d.According to another characteristic of the invention, the intermediate layer d is flat and has a thickness of between 2 and 4 mm, the studs of the two facing surfaces extending as far as the edge of the intermediate layer d.

Selon une autre caractéristique de l'invention, le corps comporte une fonderie fermée dans sa partie supérieure par un couvercle, la chambre de détente comportant des plots en saillie portés par la fonderie et des plots en saillie portés par le couvercle.According to another characteristic of the invention, the body comprises a casting closed in its upper part by a lid, the expansion chamber comprising projecting studs carried by the casting and projecting studs carried by the lid.

Un tel corps en deux parties présente l'avantage de faciliter la réalisation du circuit de distribution de vapeur et notamment des plots en saillie.Such a body in two parts has the advantage of facilitating the production of the steam distribution circuit and in particular of the projecting studs.

Selon encore une autre caractéristique de l'invention, les plots sont moulés dans la fonderie et sur le couvercle de fermeture.According to yet another characteristic of the invention, the studs are molded in the foundry and on the closure cover.

Une telle caractéristique permet de réaliser les plots de façon économique.Such a characteristic makes it possible to produce the studs economically.

Selon une autre caractéristique de l'invention, la chambre de détente est partiellement ménagée dans une cavité du couvercle.According to another characteristic of the invention, the expansion chamber is partially arranged in a cavity of the lid.

Une telle caractéristique permet d'obtenir une chambre de détente avec un volume et une section de passage importants tout en conservant une fonderie, et donc un fer à repasser, avec un encombrement latéral réduit.Such a feature makes it possible to obtain an expansion chamber with a large volume and passage section while retaining a foundry, and therefore an iron, with reduced lateral bulk.

Selon encore une autre caractéristique de l'invention, la fonderie renferme une résistance chauffante.According to yet another characteristic of the invention, the foundry contains a heating resistor.

Une telle caractéristique permet notamment de contribuer à l'élimination des condensats pouvant être transportés par le flux de vapeur.Such a characteristic makes it possible in particular to contribute to the elimination of the condensates which may be transported by the flow of steam.

Selon une autre caractéristique de l'invention, le circuit de distribution de vapeur est alimenté en vapeur par un orifice d'arrivée de vapeur ménagé dans le couvercle, la chambre de détente présentant localement une section de passage maximum plus de trente fois supérieure à la section de passage de l'orifice d'arrivée de vapeur et plus de dix fois supérieure à la section de passage cumulée d'orifices de distribution de vapeur disposés en aval de la chambre de détente.According to another characteristic of the invention, the steam distribution circuit is supplied with steam by a steam inlet orifice made in the lid, the expansion chamber locally having a maximum passage section more than thirty times greater than the passage section of the steam inlet orifice and more than ten times greater than the cumulative passage section of the steam distribution orifices arranged downstream of the expansion chamber.

Une telle caractéristique permet d'optimiser l'effet silencieux de la chambre de détente.Such a characteristic makes it possible to optimize the silent effect of the expansion chamber.

Selon l'une autre caractéristique de l'invention, le circuit de distribution de la vapeur comporte une première chambre de détente disposée en amont d'un canal de surchauffe et une deuxième chambre de détente disposée en aval du canal de surchauffe, le canal de surchauffe présentant une section de passage réduite par rapport à la section de passage des première et deuxième chambres de détente.According to another characteristic of the invention, the steam distribution circuit comprises a first expansion chamber arranged upstream of an overheating channel and a second expansion chamber arranged downstream of the overheating channel, the overheating having a reduced passage section compared to the passage section of the first and second expansion chambers.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode particulier de réalisation de l'invention, présenté à titre d'exemple non limitatif, en se référant aux dessins annexés dans lesquels :

  • la figure 1 est une vue de côté d'un appareil de repassage équipé d'un fer à repasser selon un mode particulier de réalisation de l'invention ;
  • la figure 2 est une vue en perspective éclatée du dessous de la semelle et du corps chauffant équipant le fer à repasser de la figure 1 ;
  • la figure 3 est une vue de dessus du corps chauffant de la figure 2 représenté sans le couvercle de fermeture ;
  • la figure 4 est une vue en perspective éclatée du dessus du corps chauffant équipant le fer à repasser de la figure 1 ;
  • la figure 5 une vue en coupe longitudinale du corps chauffant du fer à repasser de la figure 1 ;
  • la figure 6 est une vue en perspective partiellement arrachée du corps chauffant du fer à repasser de la figure 1.
The aims, aspects and advantages of the present invention will be better understood, according to the description given below of a particular embodiment of the invention, presented by way of non-limiting example, with reference to the appended drawings in which:
  • the figure 1 is a side view of an ironing appliance equipped with an iron according to a particular embodiment of the invention;
  • the picture 2 is an exploded perspective view of the underside of the soleplate and of the heating body fitted to the iron of the figure 1 ;
  • the picture 3 is a top view of the heating element of the picture 2 shown without the closing lid;
  • the figure 4 is an exploded perspective view from above of the heating element equipping the iron of the figure 1 ;
  • the figure 5 a view in longitudinal section of the heating body of the iron of the figure 1 ;
  • the figure 6 is a partially cut-away perspective view of the heating body of the iron of the figure 1 .

Seuls les éléments nécessaires à la compréhension de l'invention ont été représentés. Pour faciliter la lecture des dessins, les mêmes éléments portent les mêmes références d'une figure à l'autre.Only the elements necessary for understanding the invention have been represented. To facilitate reading of the drawings, the same elements bear the same references from one figure to another.

La figure 1 représente un appareil de repassage comportant une base 100 génératrice de vapeur et un fer à repasser 1 reliés entre eux par un cordon 101, le fer à repasser 1 comportant classiquement une semelle 2 de repassage surmontée d'un boitier 3 en matière plastique intégrant une poignée de préhension.The figure 1 represents an ironing appliance comprising a steam-generating base 100 and an iron 1 interconnected by a cord 101, the iron 1 conventionally comprising an ironing soleplate 2 surmounted by a case 3 made of plastic material incorporating a handle gripping.

La base 100 comporte un plan incliné sur lequel le fer à repasser 1 peut venir reposer lors de phases inactives de repassage et renferme, de manière connue en soi, une cuve 102 pour la production de vapeur sous une pression de l'ordre de 4 à 6 bars, la cuve 102 étant alimentée en eau en provenance d'un réservoir 103 au moyen d'une pompe 104.The base 100 comprises an inclined plane on which the iron 1 can come to rest during inactive ironing phases and contains, in a manner known per se, a tank 102 for the production of steam under a pressure of the order of 4 to 6 bars, the tank 102 being supplied with water from a tank 103 by means of a pump 104.

La base 100 est reliée au réseau électrique domestique par un fil électrique 105 qui permet à la fois l'alimentation électrique de moyens de chauffage de la cuve 102, non représentés sur les figures, et l'alimentation électrique du fer à repasser 1 au travers du cordon 101.The base 100 is connected to the domestic electrical network by an electrical wire 105 which allows both the electrical supply of the heating means of the tank 102, not shown in the figures, and the power supply to iron 1 through cord 101.

Conformément à la figure 2, la semelle 2 du fer à repasser est surmontée d'un corps chauffant 4 comprenant une fonderie 5 fermée dans sa partie supérieure par un couvercle 6, la fonderie 5 venant directement au contact de la semelle 2.In accordance with the picture 2 , the soleplate 2 of the iron is surmounted by a heating body 4 comprising a foundry 5 closed in its upper part by a cover 6, the foundry 5 coming directly into contact with the soleplate 2.

La semelle 2 de repassage est munie d'un premier groupe 21 de trous de sortie de vapeur 20 disposés selon un agencement en triangle à proximité de la pointe avant de la semelle de repassage 2 et d'un second groupe 22 de trous de sortie de vapeur 20 répartis sur la partie centrale et arrière de la semelle 2 selon deux réseaux concentriques séparés par une bande de matière 23 démunie de trous.The ironing sole 2 is provided with a first group 21 of steam outlet holes 20 arranged in a triangular arrangement close to the front tip of the ironing sole 2 and a second group 22 of steam outlet holes. steam 20 distributed over the central and rear part of the sole 2 according to two concentric networks separated by a strip of material 23 devoid of holes.

Les premier groupe 21 et second groupe 22 de trous de sortie de vapeur 20 sont respectivement alimentés en vapeur par une première chambre de diffusion 51 et une deuxième chambre de diffusion 52 ménagées sur la face inférieure de la fonderie 5, les première et deuxième chambres de diffusion 51, 52 étant elle même alimentées en vapeur par des orifices de distribution 50, 54 qui débouchent sur la face supérieure de la fonderie 5.The first group 21 and second group 22 of steam outlet holes 20 are respectively supplied with steam by a first diffusion chamber 51 and a second diffusion chamber 52 formed on the underside of the foundry 5, the first and second diffusion 51, 52 being itself supplied with steam by distribution orifices 50, 54 which open onto the upper face of the foundry 5.

Conformément aux figures 3 et 4, la face supérieure de la fonderie 5 comporte une paroi périphérique 55 et des parois intermédiaires 56 venant au contact du couvercle 6 pour délimiter différentes zones 11, 12 ,13, 14, 15 d'un circuit de distribution de vapeur, la paroi périphérique 55 et les parois intermédiaires 56 étant obtenues directement de moulage avec la fonderie 5, le couvercle 6 étant rapporté par collage sur les parois 55, 56 et comportant des ouvertures 60 dans lesquelles viennent s'engager des vis 64, visibles sur la figure 5, assurant le maintien du couvercle 6 sur la fonderie 5.In accordance with figure 3 and 4 , the upper face of the foundry 5 comprises a peripheral wall 55 and intermediate walls 56 coming into contact with the lid 6 to delimit different zones 11, 12, 13, 14, 15 of a steam distribution circuit, the peripheral wall 55 and the intermediate walls 56 being obtained directly from molding with the foundry 5, the cover 6 being attached by gluing to the walls 55, 56 and comprising openings 60 in which screws 64 engage, visible on the figure 5 , ensuring the maintenance of the cover 6 on the foundry 5.

Le circuit de distribution de vapeur comporte un orifice 62 d'arrivée de vapeur ménagé dans le couvercle 6, cet orifice 62 présentant une faible section de passage et débouchant dans une première chambre de détente 11 du circuit de distribution de vapeur au niveau de laquelle la section de passage augmente fortement, cette première chambre de détente 11 étant disposée en bordure de la paroi périphérique 55, à proximité de la partie arrière de la fonderie 5, et s'étendant au dessus d'une branche d'une résistance chauffante 7 en forme de U intégrée dans la fonderie 5. Une telle implantation permet d'obtenir une température élevée dans la première chambre de détente 11 qui contribue à l'évaporation des éventuels condensats transportés par la vapeur.The steam distribution circuit comprises a steam inlet orifice 62 provided in the lid 6, this orifice 62 having a small passage section and opening into a first expansion chamber 11 of the steam distribution circuit at the level of which the passage section increases greatly, this first expansion chamber 11 being arranged on the edge of the peripheral wall 55, close to the rear part of the foundry 5, and extending above a branch of a heating resistor 7 in made of U integrated in the foundry 5. Such an installation makes it possible to obtain a high temperature in the first expansion chamber 11 which contributes to the evaporation of any condensates transported by the steam.

La première chambre de détente 11 communique ensuite avec un canal de surchauffe 12 dont le rôle est de vaporiser l'intégralité des condensats encore présents dans le flux de vapeur, le canal de surchauffe 12 présentant une section de passage réduite, sensiblement constante, et serpentant dans la fonderie 5 sur une longueur avantageusement supérieure à 200 mm et préférentiellement de l'ordre de 300 mm. A cet effet, le canal de surchauffe 12 longe la partie arrière de la paroi périphérique 55 et serpente dans le volume de la fonderie 5 disposé à côté de la première chambre de détente 11, en contournant un bossage 57 destiné à recevoir un thermostat de régulation de la résistance chauffante 7, puis débouche dans une deuxième chambre de détente 13, ménagée dans la partie centrale avant de la fonderie 5, dont le rôle est de réduire au maximum la vitesse du flux de vapeur.The first expansion chamber 11 then communicates with a superheating channel 12 whose role is to vaporize all of the condensates still present in the steam flow, the superheating channel 12 having a reduced passage section, substantially constant, and meandering in the foundry 5 over a length advantageously greater than 200 mm and preferably of the order of 300 mm. To this end, the overheating channel 12 runs along the rear part of the peripheral wall 55 and meanders in the volume of the foundry 5 arranged next to the first expansion chamber 11, bypassing a boss 57 intended to receive a regulation thermostat of the heating resistor 7, then opens into a second expansion chamber 13, arranged in the front central part of the foundry 5, the role of which is to reduce the speed of the steam flow as much as possible.

De manière préférentielle, la première et la deuxième chambre de détente 11, 13 présentent une section de passage plus de trente fois supérieure à la section de passage de l'orifice 62 d'arrivée de vapeur et plus de dix fois supérieure à la somme des sections de passage des orifices de distribution de vapeur 50, 54.Preferably, the first and the second expansion chamber 11, 13 have a passage section more than thirty times greater than the passage section of the orifice 62 for the steam inlet and more than ten times greater than the sum of the passage sections of the steam distribution orifices 50, 54.

A titre d'exemple la section de passage de l'orifice 62 d'arrivée de vapeur est de l'ordre de 10 mm2, la section de passage des chambres de détentes 11, 13 est de l'ordre de 500 mm2, la section de passage du canal de surchauffe 12 est de l'ordre de 80 mm2 et la section de passage cumulée des orifices de distribution de vapeur 50, 54 est de l'ordre de 40 mm2.By way of example, the passage section of the steam inlet orifice 62 is of the order of 10 mm 2 , the passage section of the expansion chambers 11, 13 is of the order of 500 mm 2 , the passage section of the overheating channel 12 is of the order of 80 mm 2 and the cumulative passage section of the steam distribution orifices 50, 54 is of the order of 40 mm 2 .

Afin de permettre la réalisation d'une première et d'une deuxième chambre de détente 11, 13 de grand volume dans une fonderie 5 présentant un encombrement latéral réduit, les première et deuxième chambres 11, 13 sont avantageusement ménagées en partie dans le volume de la fonderie 5 et en partie dans une cavité 61, 63 formée dans le couvercle 6 de fermeture, visible sur la figure 2.In order to allow the realization of a first and a second expansion chamber 11, 13 of large volume in a foundry 5 having a reduced lateral bulk, the first and second chambers 11, 13 are advantageously arranged partly in the volume of the foundry 5 and partly in a cavity 61, 63 formed in the closure cover 6, visible on the picture 2 .

Plus particulièrement selon l'invention, le circuit de distribution de vapeur comporte des plots 58, 65 en saillie formant des obstacles aux flux de vapeur circulant dans le circuit de distribution de vapeur, ces plots 58, 65 permettant de limiter les turbulences et donc le bruit dans le circuit de distribution de vapeur.More particularly according to the invention, the steam distribution circuit comprises protruding studs 58, 65 forming obstacles to the flow of steam circulating in the steam distribution circuit, these studs 58, 65 making it possible to limit turbulence and therefore noise in the steam distribution circuit.

Ces plots 58, 65 présentent une forme arrondie et sont avantageusement équitablement répartis entre la fonderie 5 et le couvercle 6, la première chambre de détente 11 et la deuxième chambre de détente 13 comportant chacune plus d'une dizaine de plots 58 s'élevant en colonne depuis une surface supérieure de la fonderie 5, les plots 58 étant distant les uns des autres de moins de 1 cm.These pads 58, 65 have a rounded shape and are advantageously evenly distributed between the foundry 5 and the cover 6, the first expansion chamber 11 and the second expansion chamber 13 each comprising more than ten pads 58 rising in column from an upper surface of the foundry 5, the studs 58 being spaced from each other by less than 1 cm.

Conformément aux figures 5 et 6, le couvercle 6 comporte en regard de chaque plot 58 de la fonderie 5, un plot 65 s'étendant en direction de la fonderie 5 depuis une surface inférieure du couvercle 6, un espace libre de quelques millimètres étant ménagé entre les extrémités supérieures des plots 58 supportés par la fonderie 5 et les extrémités inférieures des plots 65 du couvercle 6 de manière à ce qu'il résulte une couche d intermédiaire dans le circuit de distribution de vapeur dans laquelle la vapeur peut circuler sans rencontrer d'obstacles.In accordance with figure 5 and 6 , the cover 6 comprises, opposite each stud 58 of the foundry 5, a stud 65 extending in the direction of the foundry 5 from a lower surface of the cover 6, a free space of a few millimeters being provided between the upper ends of the studs 58 supported by the foundry 5 and the lower ends of the studs 65 of the cover 6 so that there results an intermediate layer in the steam distribution circuit in which the steam can circulate without encountering obstacles.

De manière préférentielle, les plots 58, 65 sont moulés dans la fonderie 5 et dans le couvercle 6 et présentent une forme légèrement tronconique avec un angle β, illustrée sur la figure 5, de l'ordre de 12°, chaque plot 58, 65 comportant une extrémité supérieure arrondie présentant un rayon supérieur à 1,5 mm.Preferably, the studs 58, 65 are molded in the foundry 5 and in the cover 6 and have a slightly frustoconical shape with an angle β, illustrated on the figure 5 , of the order of 12°, each stud 58, 65 comprising a rounded upper end having a radius greater than 1.5 mm.

La hauteur des plots 58, 65 est adaptée pour que la couche d démunie de tout obstacle soit plane et présente une épaisseur comprise entre 2 et 4 mm et préférentiellement de l'ordre de 2,5 mm.The height of the studs 58, 65 is adapted so that the layer d, devoid of any obstacle, is flat and has a thickness of between 2 and 4 mm and preferably of the order of 2.5 mm.

De manière avantageuse, le canal de surchauffe 12 est également muni de plots 58, 65 en saillie dans les zones sujettes à la formation de turbulences, et notamment à proximité du bossage 57, ces plots 58, 65 présentant les mêmes caractéristiques que les plots disposés dans les première et deuxième chambres de détente 11, 13.Advantageously, the overheating channel 12 is also provided with studs 58, 65 projecting in the zones subject to the formation of turbulence, and in particular near the boss 57, these studs 58, 65 having the same characteristics as the studs arranged in the first and second expansion chambers 11, 13.

Dans ce mode particulier de réalisation de l'invention, la deuxième chambre de détente 13 communique avec un dispositif de distribution de vapeur permettant, de manière connue en soi, d'envoyer la vapeur soit vers l'ensemble des premier et second groupes de trous de sortie de vapeur 20 de la semelle, soit uniquement vers le premier groupe 21 de trous de sortie de vapeur de la semelle 2.In this particular embodiment of the invention, the second chamber of trigger 13 communicates with a steam distribution device making it possible, in a manner known per se, to send the steam either to all of the first and second groups of steam outlet holes 20 of the soleplate, or only to the first group 21 steam outlet holes in the soleplate 2.

Le dispositif de distribution de vapeur, qui ne sera décrit que succinctement dans la suite de la description, reprend le principe de fonctionnement du dispositif de distribution de vapeur décrit en détails dans la demande de brevet EP 2 503 052 .The steam distribution device, which will only be described briefly in the following description, uses the operating principle of the steam distribution device described in detail in the patent application EP 2 503 052 .

Ce dispositif de distribution de vapeur comporte notamment un conduit principal 16 reliant la deuxième chambre de détente 13 à une chambre de diffusion avant 14 qui alimente en vapeur le premier groupe 21 de trous de sortie de vapeur 20 par les orifices 50 traversant la fonderie 5 et comporte une cheminée 16A verticale débouchant dans une chambre de répartition 17 de la vapeur communiquant avec deux chambres de distribution latérales 15 qui alimentent en vapeur le second groupe 22 de trous de sortie de vapeur 20 par les orifices 54 traversant la fonderie 5.This steam distribution device comprises in particular a main duct 16 connecting the second expansion chamber 13 to a front diffusion chamber 14 which supplies steam to the first group 21 of steam outlet holes 20 through the orifices 50 passing through the foundry 5 and comprises a vertical chimney 16A opening into a steam distribution chamber 17 communicating with two lateral distribution chambers 15 which supply steam to the second group 22 of steam outlet holes 20 through the orifices 54 passing through the foundry 5.

Conformément à la figure 5, le dispositif de distribution de vapeur comporte également un joint 9 hémisphérique qui, au repos, occupe la position illustrée en trait plein sur la figure 5, dans laquelle la vapeur en provenance de la deuxième chambre de détente 13 passe librement par le conduit principal 16 et par la cheminée 16A verticale puis est diffusée vers les premier et second groupes 21, 22 de trous de sortie de vapeur 20.In accordance with the figure 5 , the steam distribution device also comprises a hemispherical seal 9 which, at rest, occupies the position illustrated in solid lines on the figure 5 , in which the steam coming from the second expansion chamber 13 passes freely through the main duct 16 and through the vertical chimney 16A then is diffused towards the first and second groups 21, 22 of steam outlet holes 20.

En appuyant sur un bouton 30 disposé à l'avant de la poignée du fer à repasser 1, le joint 9 est déplacé dans une position illustrée en pointillée sur la figure 5, dans laquelle le joint 9 obture la sortie de la cheminée verticale 16A et empêche la diffusion de vapeur vers le second groupe 22 de trous de sortie de vapeur 21 permettant ainsi d'envoyer l'intégralité du flux de vapeur vers le premier groupe 21 de trous sortie de vapeur 20 situé à l'avant de la semelle.By pressing a button 30 arranged at the front of the handle of the iron 1, the joint 9 is moved into a position illustrated in dotted line on the figure 5 , in which the seal 9 closes off the outlet of the vertical chimney 16A and prevents the diffusion of steam towards the second group 22 of steam outlet holes 21 thus making it possible to send the entire flow of steam to the first group 21 of 20 steam outlet holes located at the front of the soleplate.

L'appareil de repassage ainsi réalisé présente l'avantage de comporter un circuit de distribution de la vapeur permettant la diffusion de jets de vapeur au travers de la semelle avec un débit supérieur à 70 gr/min sans engendrer un bruit important. En effet, la présence de plots en saillie de part et d'autre du flux de vapeur dans les zones du circuit de distribution habituellement soumises à de fortes turbulences permet de réduire fortement les turbulences et donc de réduire le bruit généré par la circulation du flux de vapeur. De plus, en réduisant les turbulences, les plots en saillie permettent également de réduire les pertes de charges et donc d'obtenir un plus fort débit de vapeur au travers de la semelle.The ironing device thus produced has the advantage of comprising a steam distribution circuit allowing the diffusion of steam jets through the soleplate with a flow rate greater than 70 g/min without generating a significant noise. Indeed, the presence of projecting studs on either side of the steam flow in the areas of the distribution circuit usually subject to strong turbulence makes it possible to greatly reduce the turbulence and therefore to reduce the noise generated by the circulation of the flow. of steam. In addition, by reducing turbulence, the projecting studs also make it possible to reduce pressure drops and therefore to obtain a higher flow of steam through the soleplate.

Enfin, la présence des plots en saillie dans le circuit de distribution de vapeur présente également l'avantage d'améliorer l'échange thermique entre la fonderie et d'éventuels condensats transportés par la vapeur de sorte que le risque des condensats soient expulsés par les trous de sortie de vapeur est encore diminué.Finally, the presence of projecting studs in the steam distribution circuit also has the advantage of improving the heat exchange between the foundry and any condensates transported by the steam so that the risk of condensates being expelled by the steam outlet holes is further diminished.

Dans une variante de réalisation non représentée, le fer à repasser pourra être démuni du dispositif de répartition de vapeur, la vapeur en sortie de la deuxième chambre étant alors envoyée vers l'ensemble des trous de sortie de la vapeur.In a variant embodiment not shown, the iron may be without the steam distribution device, the steam leaving the second chamber then being sent to all of the steam outlet holes.

Claims (13)

  1. Steam ironing apparatus comprising a pressurised steam generator (102) and an iron (1) comprising an ironing soleplate (2) covered by a body (4) in which a steam distribution circuit is provided which conveys the flow of steam produced by the steam generator (102) to steam outlet holes (20) of the soleplate (2), characterised in that the steam distribution circuit comprises at least one expansion chamber (11, 13) comprising studs (58, 65) protruding from two facing surfaces.
  2. Ironing apparatus according to claim 1, wherein the expansion chamber (11, 13) comprises a plurality of protruding studs (58, 65) arranged opposite each other.
  3. Apparatus according to any of claims 1 to 2, wherein the protruding studs (58, 65) extend over at least one third of the distance separating the two surfaces.
  4. Ironing apparatus according to any of claims 1 to 3, wherein said protruding studs (58, 65) have a rounded contour, the stud contour having a minimum radius of curvature of 1.5 mm.
  5. Apparatus according to any of claims 1 to 4, wherein the studs (58, 65) have a frustoconical or cylindrical revolution shape.
  6. Steam ironing apparatus according to any of claims 1 to 5, wherein an intermediate layer (d) lacking any obstacles is provided between the studs (58, 65) protruding from the two surfaces.
  7. Ironing apparatus according to claim 6, wherein the intermediate layer (d) is flat and has a thickness of between 2 and 4 mm, the studs (58, 65) of the two facing surfaces extending to the edge of the intermediate layer (d).
  8. Ironing apparatus according to any of claims 1 to 7, wherein the body (4) comprises a cast (5) closed in its upper part by a cover (6) and the expansion chamber (11, 13) comprises protruding studs (58) supported by the cast (5) and protruding studs (65) supported by the cover (6).
  9. Ironing apparatus according to claim 8, wherein said studs (58, 65) are moulded in the cast (5) and on the closing cover (6).
  10. Ironing apparatus according to any of claims 8 to 9, wherein the expansion chamber (11, 13) is partially provided in a cavity (61, 63) of the cover (6).
  11. Ironing apparatus according to any of claims 8 to 10, wherein the cast (5) contains a heating resistor (7).
  12. Ironing apparatus according to any of claims 8 to 11, wherein the steam distribution circuit is supplied with steam through a steam inlet port (62) provided in the cover (6) and the expansion chamber (11, 13) locally has a maximum cross sectional area which is more than thirty times greater than the cross sectional area of the steam inlet port (62) and more than ten times greater than the cumulative cross sectional area of steam distribution ports (50, 54) arranged downstream of the expansion chamber (11, 13).
  13. Ironing apparatus according to any of claims 1 to 12, wherein the steam distribution circuit comprises a first expansion chamber (11) arranged upstream of a superheating channel (12) and a second expansion chamber (13) arranged downstream of the superheating channel (12), the superheating channel (12) having a reduced cross sectional area in comparison with the cross sectional area of the first and second expansion chambers (11, 13).
EP13192935.8A 2012-12-21 2013-11-14 Steam ironing appliance comprising a pressurised steam generator and an iron Active EP2746460B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1262633A FR3000111B1 (en) 2012-12-21 2012-12-21 STEAM IRONING APPARATUS HAVING PRESSURIZED STEAM GENERATOR AND IRON

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EP2746460A2 EP2746460A2 (en) 2014-06-25
EP2746460A3 EP2746460A3 (en) 2017-12-13
EP2746460B1 true EP2746460B1 (en) 2022-10-05

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CN (1) CN103882667B (en)
CA (1) CA2835785C (en)
ES (1) ES2928214T3 (en)
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FR3060033B1 (en) * 2016-12-13 2018-11-23 Seb S.A. IRON WITH IRONING SURFACE, HEATING SOLE AND VAPORIZATION CHAMBER
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FR3060028B1 (en) * 2016-12-13 2018-11-23 Seb S.A. IRON WITH IRONING SURFACE, HEATING SOLE AND VAPORIZATION CHAMBER
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Publication number Publication date
CN103882667A (en) 2014-06-25
EP2746460A3 (en) 2017-12-13
CN103882667B (en) 2018-01-23
ES2928214T3 (en) 2022-11-16
EP2746460A2 (en) 2014-06-25
CA2835785C (en) 2019-10-29
FR3000111A1 (en) 2014-06-27
RU2633230C2 (en) 2017-10-11
RU2013156309A (en) 2015-06-27
FR3000111B1 (en) 2015-01-02
CA2835785A1 (en) 2014-06-21

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