CN108611834B

CN108611834B - Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit

Info

Publication number: CN108611834B
Application number: CN201711315963.0A
Authority: CN
Inventors: 弗雷德里克·科莱; 托马斯·科迪尔
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2016-12-13
Filing date: 2017-12-12
Publication date: 2021-07-09
Anticipated expiration: 2037-12-12
Also published as: FR3060032B1; FR3060032A1; EP3336245A1; CN208009120U; CN108611834A; EP3336245B1

Abstract

The invention relates to a steam ironing device comprising a steam generating base (100) and an iron (1), the steam generating base (100) and the iron (1) are connected to each other by a conduit (101) for transporting steam, the iron (1) comprising an ironing surface and a first electrical resistance (31) for heating the ironing surface, the ironing surface being provided with at least one steam outlet hole (20), the first electric resistance cooperating with a first adjustment means, the iron further comprising a second electrical resistance (41) for heating a steaming chamber (43) into which steam from the conduit (101) is sent before being diffused through the steam outlet aperture, characterized in that said first electrical resistance (31) and said second electrical resistance (41) are arranged in a single heating soleplate (3), and the evaporation chamber (43) is at least partially arranged in the heating soleplate (3).

Description

Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit

Technical Field

The present invention relates to a steam ironing device comprising a steam generating base and an iron connected to each other by a conduit for conveying steam, said iron comprising an ironing surface provided with at least one steam outlet aperture and a first electrical resistance for heating said ironing surface, said first electrical resistance cooperating with a first regulating member, said iron further comprising a second electrical resistance for heating a vaporisation chamber into which steam from the conduit is sent before it diffuses through the steam outlet aperture.

Background

A steam ironing device with these features is known, as disclosed in patent application EP 1852544. However, this device has the disadvantage of having a complex construction and the insulating means being positioned between the different parts of the ironing surface, which makes it expensive to manufacture.

Disclosure of Invention

The object of the present invention is therefore to overcome these drawbacks by providing an iron that is simple and economical to implement and has improved ironing performance.

The present invention therefore relates to a steam ironing device comprising a steam generating base and an iron connected to each other by a conduit for conveying steam, the iron comprising an ironing surface equipped with at least one steam outlet hole and a first electrical resistance for heating the ironing surface, the first electrical resistance cooperating with a first regulating member, the iron further comprising a second electrical resistance for heating a vaporization chamber into which steam from the conduit is sent before being diffused through the steam outlet hole, characterized in that the first electrical resistance and the second electrical resistance are provided in a single heating soleplate and the vaporization chamber is at least partially arranged in the heating soleplate.

The device thus realised has the advantage of comprising a single heating sole plate which integrates both the electric resistance for heating the ironing surface and the electric resistance for heating the evaporation chamber, thus being simple and economical to implement.

This configuration with two resistances allows to obtain a thermal gradient between the ironing surface heated by the first resistance and the evaporation chamber heated by the second resistance.

The monolithic heating soleplate integrated with the first resistor and the second resistor means that the soleplate integrated with the two resistors is realized by a single piece.

According to another characteristic of the invention, the heating soleplate is obtained by a casting method and the first and second electric resistances are at least partially embedded in the heating soleplate.

Preferably, the heating sole plate is formed from an aluminium casting.

According to another characteristic of the invention, the first electrical resistance is arranged in alignment with a hot area of the ironing surface and the evaporation chamber is arranged in alignment with a cold area of the ironing surface equipped with steam outlet holes.

Arranged in line with said area means arranged above the area when the iron is placed horizontally on the ironing surface.

The device thus realized has the advantage of having an evaporation chamber which is laterally offset with respect to the first electrical resistance so as not to be directly heated by the first electrical resistance.

According to another characteristic of the invention, the thermal zone corresponds to a minimum closed convex surface in which the perpendicular projection of the first resistance is contained.

According to another characteristic of the invention, the ironing surface is carried by a cover formed in a single piece, which is embedded under the heating soleplate.

This feature allows to adapt the material of the cover to the features required for ironing the surface.

According to another characteristic of the invention, the cover is realized in aluminium or steel plate.

According to another feature of the invention, the evaporation chamber is located mostly and preferably exclusively outside the space swept by the hot area of the ironing surface, when the hot area moves in a plane perpendicular to the ironing surface.

This configuration allows the vapor diffusion chamber to be kept away from the environment that is overheated by the heated soleplate.

According to another characteristic of the invention, the first electric resistance is an armoured electric resistance in the shape of a U, the evaporation being mostly and preferably exclusively outside the space swept by the electric resistance when said resistance is moved in a plane perpendicular to the ironing surface.

Preferably, the first and second resistances are staggered with respect to each other so that, in a projection plane constituted by the ironing surface, they do not overlap or overlap over less than 20% of their length.

According to another characteristic of the invention, the supply of said first resistance is regulated by a first thermostat in order to maintain said hot zone around a preset temperature comprised between 90 ℃ and 240 ℃.

This feature allows to obtain a hot zone whose temperature can be adjusted according to the fabric to be ironed.

A thermostat refers to any regulating device that allows to keep the temperature in the cavity around a preset temperature and at the same time acts on the heating mechanism. As an example, the thermostat may be of the mechanical type and comprise a bimetallic strip cooperating with a switch, or of the electronic type and comprise a temperature sensor, such as an NTC, cooperating with an electronic card.

According to another characteristic of the invention, the preset temperature of the first thermostat is adjustable by the user.

According to another characteristic of the invention, the supply of the second resistance is regulated by a second thermostat in order to maintain the temperature of the evaporation chamber around a preset temperature comprised between 100 ℃ and 135 ℃.

This feature allows to obtain a strong humidity of the steam at the outlet of the evaporation chamber, so as to obtain a better ironing performance.

According to another feature of the invention, the preset temperature of the second thermostat is not adjustable by the user.

According to another characteristic of the invention, the preset temperature of the second thermostat is automatically adjusted by the control unit according to the preset temperature of the first thermostat or according to the measurement of the temperature of the heating soleplate.

This feature allows the preset temperature of the second thermostat to be automatically increased when the temperature of the heated soleplate drops below a predetermined threshold.

According to another characteristic of the invention, the cold zone is provided on the front half of the ironing surface and the hot zone is provided on the rear half of the ironing surface.

This feature allows, when moving the iron towards the front, to use the wet steam released through the cold zone of the heated soleplate for wetting the fabric to be ironed a first time, and then to use the hot zone for drying the fabric.

According to another characteristic of the invention, the steam outlet apertures of the cold zone are distributed over the ironing surface over a width that represents at least 40% and preferably more than 65% of the maximum width of the ironing surface.

The maximum width of the ironing surface refers to the total width of the ironing surface.

According to another characteristic of the invention, the steam output holes are distributed over a length on the ironing surface, said length representing at least 40% of the total length of the ironing surface.

According to another feature of the invention, the hot area of the ironing surface comprises steam outlet holes.

This feature allows to improve ironing performance when the iron is moved from front to back.

According to another characteristic of the invention, the heating soleplate comprises a cavity arranged between the evaporation chamber and the ironing surface, said cavity forming a diffusion chamber in which the steam from the evaporation chamber flows before being sent through the output holes of the ironing surface.

The presence of a steam diffusion cavity above the ironing surface allows reducing the heat exchange between the area of the ironing surface where the diffusion cavity is installed and the heating soleplate. Thus, the temperature of the cold areas of the ironing surface is reduced, where the steam diffuses, which favours the condensation of the steam in the garment.

According to another feature of the invention, the cavity extends over more than 40% of the width of the ironing surface in width, and preferably over more than 65% of the width of the ironing surface.

This feature allows to obtain a large width of the cold area on the ironing surface in order to obtain a better wetting of the garment.

According to another characteristic of the invention, the device comprises a collector arranged in the diffusion chamber, the collector comprising an aperture opposite each steam outlet aperture of the cold area of the ironing surface.

This feature allows to pre-orient the steam flow in the direction of the steam output holes towards the cold areas of the ironing surface, so as to limit the heat exchange established between the steam flow and the heating soleplate.

According to another characteristic of the invention, the evaporation chamber comprises means for separating the vapour condensate.

According to another characteristic of the invention, the separation means of the condensate comprise a circuit for conveying the vapour, having an abrupt change of direction, and comprising a holding cavity of the condensate downstream of the abrupt change of direction.

According to another characteristic of the invention, the evaporation chamber comprises a junction, which is used as a temperature measurement point, close to the holding cavity for the condensate.

According to another characteristic of the invention, the temperature of the front half of the ironing surface is maintained between 95 ℃ and 130 ℃ when the iron is in operation and whatever the preset temperature of the hot zone.

According to another characteristic of the invention, the ironing surface is flat.

According to another feature of the invention, the base comprises a water container and comprises a tank for generating steam under pressure, the tank comprising a steam outlet equipped with an electric valve connected to a steam conduit delivering steam to the iron.

According to another feature of the invention, the base comprises means for injecting the water in the container directly into the steam duct.

According to another characteristic of the invention, the means for injecting the water of the container directly into the steam conduit comprise a pump, an electrovalve and a shunt conduit.

According to another characteristic of the invention, the water is injected into the steam conduit sequentially when the electrovalve is open.

According to another characteristic of the invention, said first resistance is adjusted by means of a first thermostat so as to maintain said hot zone around a preset temperature comprised between 90 ℃ and 240 ℃, water being regularly injected into the steam conduit when the preset temperature of the first thermostat is greater than a predetermined threshold value.

According to another characteristic of the invention, the heating soleplate comprises means for measuring the temperature of the evaporation chamber, water being injected into the steam duct when the measured temperature is greater than a predetermined threshold value.

Drawings

The objects, features and advantages of the invention will be better understood from the following description of several embodiments thereof, given by way of non-limiting example with reference to the accompanying drawings, in which:

figure 1 is a side view of an ironing apparatus according to the present invention;

figure 2 is a top perspective view of a sub-assembly of an iron fitted with the ironing apparatus of figure 1, realised according to a first embodiment of the present invention;

figure 3 is an exploded perspective view of the subassembly of figure 2;

figure 4 is a top view of the subassembly of figure 2, not equipped with a closing lid;

FIG. 5 is a cross-sectional view along the line V-V of FIG. 4;

figure 6 is a partially cut-away perspective view of the subassembly shown in figure 5;

figure 7 is a bottom perspective view of the subassembly of figure 5 with the cover unassembled;

figure 8 shows a time-sequence working diagram.

Detailed Description

Only the elements necessary for an understanding of the present invention are shown. To facilitate reading of the drawings, like elements between different drawings bear like reference numerals.

It is noted that in this document, the terms "horizontal", "vertical", "lower", "upper", "front" and "rear" used to describe the iron refer to the iron in use when the ironing board is placed on a horizontal plane.

Fig. 1 shows an ironing apparatus comprising a steam generating base 100 and an iron 1, said steam generating base 100 and iron 1 being connected to each other by a flexible conduit 101, said iron 1 comprising a housing realized in plastic material integrating a gripping handle.

Said base 100 comprises an inclined plane on which the iron 1 can rest during the rest phase of ironing and said base 100 comprises, in a known manner, a tank 102 for generating steam at a pressure of about 4 to 6 bar. The tank 102 is supplied with water from a container 103 through a supply circuit comprising a pump 104 controlled by an electronic card 108. The tank 102 comprises a steam outlet equipped with an electric valve 102A, said electric valve 102A being controlled by a pin 10 arranged below the handle of the iron 1, said electric valve being connected to the iron 1 through a steam conduit 105 arranged in the conduit 101.

Advantageously, the supply circuit of the tank 102 also comprises a shunt conduit 106 and a two-way electric valve 107, the shunt conduit 106 allowing the water of the container 103 to be directly conveyed into the steam conduit 105, the two-way electric valve 107 being controlled by an electronic card 108 allowing the tank 102 and the shunt conduit 106 to be supplied alternately or simultaneously.

Said base 100 is connected to the household electrical network by means of an electric cord, not shown in the figures, which allows both the power supply of the heating means of the tank 102 and the power supply of the iron 1 through the conduit 101.

As shown in fig. 2 to 7, the iron 1 comprises a cover 2, said cover 2 comprising a flat lower surface defining an ironing surface for contact with the garment, said cover 2 being in close proximity to a heating sole plate 3, said heating sole plate 3 comprising a substantially flat lower wall in direct contact with the cover 2, said cover 2 being glued to the heating sole plate 3 by means of a silicone adhesive.

The cap 2 is advantageously made of an aluminium sheet, having a thickness of about 1.4mm, covered with enamel on its underside and comprising a front portion, arranged in front of a transverse axis Y passing through the middle of the cap 2, having a substantially triangular shape with a tip at its front end, and a rear portion, arranged behind said transverse axis Y, having a greater width and ending with a rounded rear edge.

Preferably, said heating soleplate 3 is constituted by a cast aluminium in which a U-shaped armoured first electrical resistance 31 is embedded, said armoured first electrical resistance 31 extending only in the rear portion of the heating soleplate 3, the rear portion of said heating soleplate 3 being mounted on the rear portion of the enclosure 2 so as to create, at the rear portion of the enclosure 2, a hot zone arranged in alignment with said first electrical resistance 31, at which the temperature of the ironing surface is highest.

The power supply of said first resistor 31 is regulated by a first thermostat, advantageously constituted by an NTC probe, not shown in the figures, which abuts against a boss 32 arranged on the rear part of the heated soleplate 3 and cooperates with a relay controlled by the electronic card 108.

Said first resistance 31 advantageously has a power of between 300W and 600W and said first thermostat comprises a preset temperature that can be adjusted by the user over a temperature range advantageously between 90 ℃ and 240 ℃ and preferably between 110 ℃ and 200 ℃, this preset temperature of the first thermostat corresponding to the temperature of the point a located in the hot area of the ironing surface, near the centre of the cover 2.

Said heating soleplate 3 comprises, opposite the front part of the mantle 2, a front part 4 equipped with a U-shaped armoured second electrical resistance 41, said second electrical resistance 41 also having a power advantageously comprised between 300W and 600W.

By way of example, the heating sole plate 3 can be realised by moulding in an aluminium alloy casting having a mass of about 350g and moulded over a first and a second armoured electrical resistance, each of these resistances having a power of about 450W.

As shown in fig. 3 and 4, the front portion 4 comprises an upper face on which a peripheral wall 42 projects, the peripheral wall 42 laterally delimiting condensate retaining and evaporating means, which comprise in particular a central container forming an evaporating chamber 43 of the instantaneous evaporation type, the evaporating chamber 43 being closed at its upper end by a cover 6, the cover 6 resting on the upper edge of the peripheral wall 42.

The cover 6 supports a second thermostat 60 fixed to a contact 44, the contact 44 projecting in the evaporation chamber 43 and passing through the cover 6. The second thermostat 60 is connected to the second resistance 41 so as to regulate the temperature of the evaporation chamber 43 around a preset temperature, advantageously fixed and not adjustable by the user, slightly greater than 100 ℃, preferably about 105 ℃.

The second thermostat 60 is advantageously realized by a mechanical thermostat of the bimetallic type, requiring a lower precision for the adjustment of the temperature of the front portion 4 than for the rear portion of the heating soleplate 3.

The cover 6 comprises a connector 61, said connector 61 being connected to a steam duct 105, said steam duct 105 being integrated in a duct 101, said duct 101 connecting the steam generating base 100 and the iron 1, the connector 61 allowing the steam generated by the tank 102 to be used to supply the evaporation chamber 43.

As shown in fig. 4 to 6, the joint 61 opens into the front section 4 at an injection point 45, from which point 45 the vapour is discharged through condensate retaining and evaporating means comprising a first channel 43A and a second channel 43B, the first channel 43A extending in a spiral around a circular central space in which the joint 44 protrudes, the second channel 43B communicating with this central space through a side opening 43C. The second channel 43B extends outside the first channel 43A and has a shape such that the steam flow makes a 180 ° turn by passing from the first channel 43A to the second channel 43B through the side opening 43C. Said second channel 43B then extends towards the front end of the front section 4, said second channel 43B communicating with two passages 46 through the front section 4 in order to open onto the underside of the front section 4 in a steam diffusion chamber 7, said steam diffusion chamber 7 being arranged in the cavity 30 of the heating sole plate 3 provided between the evaporation chamber 43 and the hood 2.

This cavity 30 limits the heat exchange, carried out by conduction, between the heating soleplate 3 and the enclosure 2, the front portion of the enclosure 2, in line with the evaporation chamber 43, comprising a cold zone, in particular extending opposite the cavity 30, in which the temperature of the ironing surface is lower than in the hot zone located in the rear portion of the enclosure.

In the embodiment shown in the figures, the cavity 30 has a substantially triangular shape, said shape conforming to the shape of the front portion of the mask 2, the width of said cavity 30 representing at least 65% of the width of the mask 2.

As shown in fig. 3 and 7, the diffusion chamber 7 allows to supply a first group 21 of steam outlet holes 20, located mainly in the front portion of the enclosure 2, in the cold region of the ironing surface, and a second group 22 of steam outlet holes 20, located in the rear portion of the enclosure 2, in the hot region of the ironing surface. The steam outlet holes 20 of the first group 21 are arranged mainly directly opposite the diffusion chamber 7, so that the steam diffused by these holes does not come into contact with the heated soleplate 3 and is not heated by the heated soleplate 3 before being diffused outside the hood 2.

Preferably, the steam outlet holes 20 of the first group 21 are distributed over the entire surface of the cap 2 covered by the cavity 30, so as to spread the steam over a width corresponding to at least 65% of the width of the cap 2.

The steam outlet holes 20 of said second group 22 are indirectly fed through a distribution channel 47 arranged on the rear portion of the hood 2, where the steam is heated before being diffused outside the hood 2 at the steam outlet holes 20 of said second group 22.

The operation of such an ironing apparatus and the advantages brought by such a construction will now be described.

When the device is started, the tank 102 is heated and the water it contains is heated to boiling, and steam under pressure generated by the tank 102 is transported through the steam conduit 105 towards the iron 1. When the steam is transported through the steam duct 105, the temperature of the steam is reduced, so that condensate is formed in the steam flow reaching the iron 1.

As the vapor stream passes in the evaporation chamber 43, larger condensate is eliminated. In fact, the flow of steam through the first and

second channels

43A, 43B allows to separate the water vapour from the condensate, a sudden change of direction of the steam flow being established at the inlet of the second channel 43B, allowing to separate the steam flow from the condensate and to keep said condensate in the central space. Furthermore, the sudden increase in the passage section established at the central space of the evaporation chamber 43 allows to reduce the speed of the steam flow and to collect, by gravity, the condensate in the bottom of the central space, which is conveyed in the form of large drops or in the form of a liquid film, which is driven by the flow of the steam onto the walls of the evaporation chamber 43.

The condensate is gradually evaporated by the evaporation chamber 43, the energy consumed for evaporating the condensate having the advantage of contributing to a reduction in the temperature of the evaporation chamber 43 and therefore avoiding excessive heating of the evaporation chamber 43 by the heat flow generated by the first resistance 31 when the preset temperature of the first resistance is greater than 200 ℃.

This configuration of the evaporation chamber 43 allows obtaining, at the outlet of the evaporation chamber 43, a steam with only a micro water droplet load, which passes through the channels 46 to be released in the diffusion chamber 7 arranged above the front portion of the hood 2.

Said diffusion chamber 7 is remote from the hot area of the enclosure 2, the steam at the diffusion chamber 7 being diffused through the steam outlet holes 20 of the first group 21, which has a higher humidity, that is to say a load of micro-sized water droplets deposited on the fabric being ironed.

A good moistening of the laundry is thus obtained by the steam coming from the steam outlet aperture 20 arranged in the front portion of the hood 2.

In particular, this configuration allows to establish a large thermal gradient between point B, located in the cold region of the ironing surface, and point a, located in the hot region of the ironing surface, since the geometry allows to confine the heat flow between the centre of the enclosure 2, which is directly subjected to the heating by the first electrical resistance 31, and the front portion of the enclosure 2. In fact, when the point a of the hood 2 has a temperature of 180 ℃, this configuration allows limiting the maximum heat flow, which can pass by conduction through the peripheral edge of the heating sole plate 3 laterally surrounding the cavity 30, to around 18W.

Thus, the temperature of the heating soleplate 3, and therefore of the rear portion of the ironing surface, can be adjusted to around a preset temperature greater than 240 ℃, while maintaining the temperature in the front portion of the ironing surface, and in particular around point B, at around 100 ℃, which can reach a maximum temperature of about 130 ℃ as the case may be, over a peripheral area where the cover 2 is in contact with the peripheral edge of the heating soleplate 3 surrounding the cavity 30.

Furthermore, in order to avoid the energy released by the rear portion of the soleplate 3 gradually causing an increase in the temperature of the evaporation chamber 43 exceeding 130 ℃, the electronic card 108 may advantageously comprise a program controlling the pump 104 and the electric valve 107 so as to regularly inject small amounts of water into the steam conduit 105.

In fact, the water injected into the steam duct 105 is entrained by the steam flow up to the evaporation chamber 43, where these purposely introduced water droplets will be evaporated and thus produce a drop in the temperature of the evaporation chamber 43.

The controlled injection of water in the steam conduit 105 can be achieved in a systematic way when the user actuates the pin 10 of the control electrovalve 102A in order to release steam through the steam conduit 105.

Thus, as shown in fig. 8, the electronic card 18 controls the opening of the electric valve 107 and the activation of the pump 104 at regular intervals, so as to direct the water coming from the pump 104 towards the steam conduit 105 when the electric valve 102A is open. For example, when the pin 10 is pressed, the pump is activated for 100ms on a 500ms cycle during the entire opening phase of the electrovalve 102A, the electrovalve 107 being activated and deactivated with a waiting time of, for example, 100ms with respect to the activation of the pump 104.

In an embodiment variant, the controlled injection of water in the steam duct 105 may be conditioned by a preset temperature of the first electrical resistance 31. As an example, the controlled injection of water will only be carried out when the preset temperature of the first electrical resistance 31 is greater than a certain threshold value, for example 200 ℃.

In another embodiment variant, the regular injection of small quantities of water into the steam duct 105 can be carried out in a controlled manner according to the actual temperature of the evaporation chamber 43 measured by the sensor, the quantity of water injected being greater when the temperature of the evaporation chamber 43 is higher.

Of course, the preset temperature of the first thermostat is low, which is close to 100 ℃, the presence of the second resistance 41 and its regulation by the second thermostat 60 allows to keep the temperature of the evaporation chamber 43 at a temperature close to 105 ℃, thus allowing to gradually evaporate the condensate collected in the evaporation chamber.

The steam with high humidity released by the steam outlet holes 20 of the first group 21 can therefore condense rapidly in the thickness of the laundry, which allows to obtain better ironing performance, the condensation in the laundry being facilitated by the low temperature of the ironing surface, which is about 100 ℃, in the vicinity of the steam outlet holes 20 of the first group 21, which avoids overheating of the laundry.

Due to the heat distribution and the temperature of the diffused steam close to the condensation temperature, the wrinkle removing performance of fabrics such as linen or cotton, which require higher ironing temperatures, is improved.

Furthermore, when the iron is moved forward, the area of the garment previously wetted by the steam outlet holes 20 of the cold area of the ironing surface is dried by the rear portion of the ironing surface, which has a higher temperature, which allows to obtain a very good ironing performance.

When the preset temperature of the ironing surface is about 100 ℃, the temperature of the front portion of said enclosure 2 remains greater than 90 ℃, due to the heat exchange established by radiation with the front portion 4 of the heating sole, by convection through the steam present in the cavity 30, or by conduction with the portion of the heating sole 3 surrounding the cavity 30, which is sufficient to avoid the steam condensing directly on the enclosure 2 and at the same time forming, by capillarity, a wetting of the laundry, leading to an excessively long drying time.

Finally, the steam released by the steam output holes 20 of the second group 22 has the advantage of having a lower humidity than the steam released by the first group 21, since the reheating of the steam is carried out as it diffuses through the distribution channels of the heating soleplate 3, so that the release of steam through these holes does not hinder the drying of the laundry by the rear portion of the hood 2. Conversely, when only the rear portion of the enclosure 2 is used to iron a specific area of the garment, the presence of the second set 22 of steam outlet apertures 20 allows improving the efficiency of the iron, the iron 1 being moved only towards the rear over a specific area of the garment.

The invention is of course in no way limited to the embodiments shown and described, which are given by way of example only. Changes may be made, especially in matters of construction of different elements or by substitution of technical equivalents, without exceeding the scope of the invention.

In a variant embodiment that is not shown, the hood may therefore comprise only the first group of steam outlet holes and no second group of steam outlet holes.

In a variant embodiment that is not shown, the heating element can therefore be realized as a flat heating element that is screen-printed.

Thus, in another embodiment variant, not shown, the iron may comprise a collector arranged transversely with respect to the cavity of the heated soleplate. The collector is advantageously realized by punching a stainless steel plate, said collector comprising a discharge hole opposite each steam outlet hole of the first set, in order to pre-orient the steam flow towards these steam outlet holes. Such a collector has the advantage of further limiting the heat exchange established between the steam flow and the heating sole plate, which allows further lowering of the steam temperature at the outlet of the steam outlet holes of the first group, so as to achieve a greater degree of moistening of the garment and a better ironing performance.

In a variant embodiment, not shown, the preset temperature of the second thermostat can therefore be automatically adjusted by the control unit as a function of the preset temperature of the first thermostat or as a function of a measurement of the temperature of the heating soleplate.

Claims

1. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit, the steam ironing device comprising a steam generating base (100) and an iron (1), the steam generating base (100) and the iron (1) being connected to each other by a conduit (101) for transporting steam, the iron (1) comprising an ironing surface equipped with at least one steam outlet hole (20) and a first electrical resistance (31) for heating the ironing surface, the first electrical resistance cooperating with a first regulating member, the iron further comprising a second electrical resistance (41) for heating a vaporisation chamber (43) into which steam from the conduit (101) is sent before being diffused through the steam outlet hole, characterized in that the first electrical resistance (31) and the second electrical resistance (41) are provided in a single heating sole plate (3), and the evaporation chamber (43) is at least partially arranged in the heating soleplate (3).

2. Steam ironing apparatus comprising a steam generating base and an iron connected to each other by means of a duct according to claim 1, characterized in that said heating soleplate (3) is obtained by a casting method, said first electric resistance (31) and said second electric resistance (41) being at least partially embedded in said heating soleplate (3).

3. A steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any one of claims 1-2, characterized in that the first electrical resistance (31) is arranged in line with a hot area of the ironing surface and the evaporation chamber (43) is arranged in line with a cold area of the ironing surface equipped with at least one steam output aperture (20).

4. A steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any one of claims 1 to 2, characterized in that the ironing surface is carried by a cover (2) formed in one piece, which is embedded underneath the heating soleplate (3).

5. A steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any one of claims 1 to 2, characterized in that the hot area of the ironing surface is defined as the smallest closed convex surface in which the perpendicular projection of the first electrical resistance (31) is contained, and in that the evaporation chamber (43) is located outside the space swept by the hot area when the hot area moves in a plane perpendicular to the ironing surface.

6. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 3, characterised in that said first regulating means is a first thermostat regulating the temperature of said hot area around a preset temperature comprised between 90 ℃ and 240 ℃.

7. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 6, characterized in that the preset temperature of the first thermostat is adjustable by the user.

8. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any one of claims 1 to 2, characterized in that said second electrical resistance cooperates with a second regulating means, which is a second thermostat (60) that regulates the temperature of said evaporation chamber (43) around a preset temperature comprised between 100 ℃ and 135 ℃.

9. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 8, characterized in that said preset temperature of said second thermostat (60) is not adjustable by the user.

10. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 3, characterized in that the cold area is provided on a front half of the ironing surface and the hot area is provided on a rear half of the ironing surface.

11. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 3, characterized in that the steam output apertures of the cold area are distributed over the ironing surface over a width that is at least 40% of the maximum width of the ironing surface.

12. A steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any one of claims 1-2, characterized in that the heated soleplate (3) comprises a cavity (30) arranged between the steaming chamber (43) and the ironing surface, the cavity (30) forming a diffusion chamber (7) in which steam from the steaming chamber (43) flows before being sent through the output apertures (20) of the ironing surface.

13. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to any of claims 1-2, characterized in that the base (100) comprises a water container (103) and comprises a tank (102) for generating steam under pressure, the tank (102) comprising a steam outlet equipped with an electric valve (102A), the electric valve (102A) being connected with a steam conduit (105) conveying steam to the iron (1).

14. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 13, characterized in that the base (100) comprises means (106,107,108) for injecting water in the reservoir (103) directly into the steam conduit (105).

15. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 14, characterized in that water is injected into the steam conduit (105) in a sequential manner when the electric valve (102A) is opened.

16. Steam ironing device comprising a steam generating base and an iron connected to each other by a conduit according to claim 3, characterized in that the steam outlet apertures of the cold area are distributed over the ironing surface over a width which represents more than 65% of the maximum width of the ironing surface.