CN112144257A

CN112144257A - Iron equipped with an evaporation chamber provided with two heating resistors

Info

Publication number: CN112144257A
Application number: CN202010588498.3A
Authority: CN
Inventors: 弗雷德里克·科莱
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2019-06-28
Filing date: 2020-06-24
Publication date: 2020-12-29
Anticipated expiration: 2040-06-24
Also published as: FR3097882B1; EP3757281B1; CN112144257B; FR3097882A1; EP3757281A1

Abstract

The invention relates to an iron (3) comprising an ironing base plate comprising at least one steam outlet hole (12) and a heating body (13) comprising a vaporization chamber (16) connected to the at least one steam outlet hole by a steam distribution circuit, the vaporization chamber having a bottom wall (21) comprising a water injection zone in which water is injected to generate steam, the heating body comprising a first heating resistor (18) extending in a first region of the bottom wall and a second heating resistor (19) extending in a second region of the bottom wall, the first heating resistor having a bend (18.3) extending between two connection terminals (18A, 18B) for the supply of power to the first heating resistor, the second heating resistor having a bend (19.3) extending between the two connection terminals (19A, 19B) for the supply of power to the second heating resistor, characterized in that, the first heating resistor and the second heating resistor are arranged head to foot, and the bent portions of the first resistor and the second resistor are arranged opposite to each other.

Description

Iron equipped with an evaporation chamber provided with two heating resistors

Technical Field

The present invention relates to the field of ironing devices, and in particular to the field of ironing devices comprising an iron equipped with a vaporization chamber.

Background

From document EP3156538 an iron is known, comprising:

a heating body comprising an evaporation chamber having a flat bottom wall over which water is intended to flow to generate steam, the heating body may comprise a first heating resistance extending at the periphery of the bottom wall and a second heating resistance located in a central region of the bottom wall,

an ironing base plate thermally and mechanically coupled to the heating body, the ironing base plate comprising an ironing surface and at least one steam outlet aperture opening into the ironing surface, the ironing surface being parallel to the bottom wall,

-a vapour distribution circuit fluidly connecting the evaporation chamber to at least one vapour output aperture, and in which vapour generated by the evaporation chamber is intended to flow.

However, such irons have the drawback of having an evaporation chamber with a small surface, combined with a U-shape of two heating resistors arranged in parallel, so that when the flow rate of the injected water becomes large, the exchange surface becomes insufficient to evaporate the water injected into the evaporation chamber, with the risk of water droplets splashing on the garment to be ironed. In addition, such a small-volume evaporation chamber can quickly become clogged with scale when the flow rate of the generated steam becomes large.

Disclosure of Invention

The invention aims to remedy all or part of said drawbacks.

The technical problem underlying the present invention relates in particular to providing an iron comprising an evaporation chamber capable of having a large volume, which allows a large flow of steam to be generated, while avoiding the risk of water droplets splashing on the garment to be ironed.

To this end, the invention relates to an iron comprising an ironing base plate comprising at least one steam outlet hole and a heating body comprising an evaporation chamber connected to the at least one steam outlet hole by a steam distribution circuit, the evaporation chamber having a bottom wall comprising a water injection zone in which water is injected to generate steam, the heating body comprising a first heating resistor extending in a first region of the bottom wall and a second heating resistor extending in a second region of the bottom wall, the first heating resistor having a bend extending between two connection terminals for the supply of power to the first heating resistor and the second heating resistor having a bend extending between two connection terminals for the supply of power to the second heating resistor, characterized in that the first heating resistor and the second heating resistor are arranged foot-wise, the bent portions of the first and second resistors are disposed opposite to each other.

This configuration of the electrical resistance allows to independently heat the two evaporation areas of the evaporation chamber, which can be distanced from each other, allowing to have a large surface of the evaporation chamber and a good uniformity of the temperature of the bottom wall of the evaporation chamber.

It is thus possible to supply the evaporation chamber with a greater flow rate of water, while limiting the risk of a puddle of water being formed due to an insufficient temperature of the bottom wall region of the evaporation chamber, and therefore the risk of splashing of water droplets on the laundry to be ironed. Therefore, the iron according to the present invention has improved ironing efficiency.

The iron may also have one or more of the following features, either alone or in combination.

According to an advantageous embodiment of the invention, the iron comprises adjustment means configured to adjust the supply of power to the first heating resistance and the supply of power to the second heating resistance independently.

According to one advantageous embodiment of the invention, the connecting end of the first heating resistance protrudes from the side of the rear end of the heating body to the outside of the heating body, and the connecting end of the second heating resistance protrudes from the side of the front end of the heating body to the outside of the heating body.

According to an advantageous embodiment of the invention, the iron comprises adjustment means configured to adjust the supply of power to the second heating resistance by means of a thermostat mounted on an adjustment stud located at the rear of the evaporation chamber and to adjust the supply of power to the first heating resistance by means of an additional thermostat mounted on an additional adjustment stud located at the front of the evaporation chamber.

These arrangements allow to optimally adjust the temperature in the steam chamber and in particular to detect the position of a possible share of water in front of or behind the steam chamber, in order to thereby activate the first heating resistance or the second heating resistance and to absorb this share of water by preferentially heating the rear region or the front region of the evaporation chamber without causing overheating in the regions without a share of water.

According to an advantageous embodiment of the invention, the first heating resistor extends to the periphery of the bottom wall and the second heating resistor extends below the bottom wall.

According to an advantageous embodiment of the invention, the curved portion of the first heating resistance is arranged perpendicularly to the additional adjusting stud when the ironing surface rests on a horizontal support plane.

According to an advantageous embodiment of the invention, the first heating resistance comprises a first branch extending near a first side of the evaporation chamber and a second branch extending near a second side of the evaporation chamber, said second side being opposite to said first side.

According to an advantageous embodiment of the invention, the second heating resistor extends inside the first branch and the second branch of the first heating resistor.

According to one advantageous embodiment of the invention, the first heating resistor and the second heating resistor have a cumulative power of more than 2400W.

According to an advantageous embodiment of the invention, the first heating resistor and/or the second heating resistor have a shape of substantially U, V or Ω.

According to an advantageous embodiment of the invention, the curved portion of the first heating resistance is located at the front of the evaporation chamber.

According to an advantageous embodiment of the invention, the curved portion of the second heating resistance is located at the rear of the evaporation chamber.

According to an advantageous embodiment of the invention, the first heating resistor extends in a first extension plane and the second heating resistor extends in a second extension plane substantially parallel to the first extension plane.

According to an advantageous embodiment of the invention, the first heating resistance is located above the second heating resistance when the ironing surface rests on a horizontal support plane. In other words, the first heating resistance is located at a higher level than the second heating resistance when the ironing surface rests on a horizontal support plane.

According to an advantageous embodiment of the invention, the heating body comprises a casting at least partially delimiting the evaporation chamber. Advantageously, the first heating resistor and the second heating resistor are integrated in the casting.

According to an advantageous embodiment of the invention, the heating body comprises a closing plate resting on the casting, the evaporation chamber being delimited by the casting and the closing plate.

According to an advantageous embodiment of the invention, the evaporation chamber is laterally delimited by a peripheral wall comprising a connection opening through which the steam escapes from the evaporation chamber to enter a scale collection chamber comprising a scale collection container.

According to an advantageous embodiment of the invention, the bottom wall comprises an intermediate zone extending between the first zone and the second zone, the watering zone of the bottom wall comprising a surface configured to direct water over the watering zone towards the intermediate zone when the iron is lying flat on the ironing base plate.

According to an advantageous embodiment of the invention, the supply of power to the second heating resistance is regulated by a temperature regulator mounted on a regulating stud arranged in the flow path of the water flow injected from the water injection zone to the bottom wall.

These arrangements allow the presence of a share of water to be detected very quickly at the adjusting stud and the power supply to the first heating resistor and/or the second heating resistor to be adjusted by the temperature regulator to evaporate said share of water, thereby avoiding wetting of a possible scale collection container located behind the evaporation chamber.

According to an advantageous embodiment of the invention, the adjusting stud deflects the water towards two lateral flow paths arranged on both sides of the adjusting stud.

Advantageously, the adjusting stud is located at the rear of the evaporation chamber. Advantageously, the curved portion of the second heating resistance is arranged vertically to the adjustment stud when the ironing surface rests on the horizontal plane support.

According to an advantageous embodiment of the invention, each lateral flow path is inclined to the rear of the evaporation chamber. These arrangements facilitate the flow of a pool of water formed in the evaporation chamber to the rear of the evaporation chamber.

According to an advantageous embodiment of the invention, the intermediate region comprises at least one holding chamber for holding a quantity of water.

According to an advantageous embodiment of the invention, the bottom wall comprises a blocking wall delimiting the downstream end of the holding chamber.

According to an advantageous embodiment of the invention, the holding chamber is arranged at the foot of the adjusting stud.

According to an advantageous embodiment of the invention, the bottom wall comprises two holding chambers, which are arranged on both sides of the adjusting stud.

According to an advantageous embodiment of the invention, the holding chamber is arranged above at least a part of the second heating resistance when the iron is lying flat on the ironing base plate.

According to an advantageous embodiment of the invention, the adjusting stud is arranged in the vicinity of the curved portion of the second heating resistor.

According to an advantageous embodiment of the invention, the adjusting stud is arranged in the vicinity of one branch of the first heating resistor.

According to an advantageous embodiment of the invention, the bottom wall comprises a convex surface configured to guide the flow of water over the convex surface towards the intermediate area.

According to an advantageous embodiment of the invention, the convex surface comprises a first portion of the wall sloping towards the first side edge of the bottom wall, a second portion of the wall sloping towards the second side edge of the bottom wall, and a longitudinal ridge connecting the first and second portions of the wall. The longitudinal ridge may, for example, extend in a longitudinal middle plane of the iron and may, for example, have a circular cross-section.

According to an advantageous embodiment of the invention, the heating body comprises a water injection port which opens into the front of the evaporation chamber, for example close to the front end of the bottom wall.

According to an advantageous embodiment of the invention, the water injection port is located above the convex surface. These arrangements avoid the accumulation of water in the portion of the evaporation chamber located below the water injection area in the evaporation chamber, thereby promoting the evaporation of the water input into the evaporation chamber. These arrangements thus further improve the ironing efficiency of the iron according to the invention.

According to an advantageous embodiment of the invention, the bottom wall has a top portion located substantially below the water filling opening.

According to an advantageous embodiment of the invention, the bottom wall of the evaporation chamber has a generally quadrangular shape.

According to an advantageous embodiment of the invention, the second heating resistor extends at the periphery of the convex surface.

According to an advantageous embodiment of the invention, the second heating resistance comprises a first branch extending in the vicinity of a first lateral edge of the relief surface and a second branch extending in the vicinity of a second lateral edge of the relief surface, said second lateral edge being opposite to said first lateral edge.

According to an advantageous embodiment of the invention, the water injection opening opens above a region located between the branches of the second resistor.

According to an advantageous embodiment of the invention, the steam distribution circuit comprises a scale collection chamber and the iron comprises a scale collection container arranged in the scale collection chamber.

According to an advantageous embodiment of the invention, the scale collection container is configured to collect scale particles from the evaporation chamber.

According to an advantageous embodiment of the invention, the scale collection container is removable.

According to an advantageous embodiment of the invention, the scale collection chamber is arranged behind the evaporation chamber.

According to an advantageous embodiment of the invention, the scale collection chamber comprises a drain hole closed by a removable plug, said plug being accessible from the outside of the iron.

According to an advantageous embodiment of the invention, the discharge opening is arranged behind the iron.

According to an advantageous embodiment of the invention, the scale collection container is integrally connected to the removable plug.

According to an advantageous embodiment of the invention, the scale collection chamber is connected to the evaporation chamber by a connection opening which opens into the rear end of the evaporation chamber.

According to an advantageous embodiment of the invention, the scale collection container comprises a filter element having through holes configured to retain scale particles entrained by the flowing steam in the steam distribution circuit. Advantageously, each through hole has a size comprised between 0.05mm and 0.5 mm.

According to an advantageous embodiment of the invention, the steam distribution circuit comprises at least one exhaust channel opening into the scale collection chamber, said at least one exhaust channel being fluidly connected to the at least one steam outlet hole. Advantageously, the at least one exhaust channel is located downstream of the filter element.

According to an advantageous embodiment of the invention, the steam distribution circuit comprises two exhaust channels, one on each side of the connection opening.

According to an advantageous embodiment of the invention, the vapor distribution circuit comprises a distribution chamber arranged below the heating body, said vapor distribution chamber fluidly connecting the at least one vent channel to the at least one vapor output aperture.

According to an advantageous embodiment of the invention, the temperature regulator and the additional temperature regulator are made of a temperature sensor and an additional temperature sensor, respectively, connected to the microcontroller.

The invention also relates to an ironing apparatus comprising an iron according to the invention, a water tank and a supply circuit fluidly connected to the water tank and configured to supply water to the evaporation chamber.

According to an advantageous embodiment of the invention, the supply circuit comprises a water duct fluidly connecting the water tank to the evaporation chamber.

According to an advantageous embodiment of the invention, the ironing device comprises a base on which the iron is arranged during the inactive phase of ironing.

According to an advantageous embodiment of the invention, the base comprises a water tank.

According to an advantageous embodiment of the invention, the supply circuit comprises a supply pump configured to supply the evaporation chamber with water from the water tank. Advantageously, the supply pump is integrated in the base.

Drawings

The invention will be better understood with the aid of the following description, with reference to the accompanying drawings, which show, by way of non-limiting example, an embodiment of the ironing appliance.

Figure 1 is a perspective view of an ironing apparatus according to the present invention.

Fig. 2 is a partial perspective view of an iron of the ironing apparatus of fig. 1.

Fig. 3 is a partial perspective view of the iron of fig. 2.

Fig. 4 is a partial top view of the iron of fig. 2.

Fig. 5 is a sectional view taken along line V-V of fig. 4.

Fig. 6 is a sectional view taken along line VI-VI of fig. 4.

Fig. 7 is a sectional view taken along line VII-VII of fig. 4.

Fig. 8 is a sectional view taken along line VIII-VIII of fig. 4.

Fig. 9 is a sectional view taken along line IX-IX of fig. 4.

Fig. 10 is a top view of the first heating resistor and the second heating resistor shown separately.

Detailed Description

Fig. 1 to 9 show an ironing device 2, the ironing device 2 comprising an iron 3 and a stand 4, on which stand 4 the iron 3 can be arranged during an inactive phase of ironing.

The ironing device 2 further comprises a water tank 5, which is integrated in the base 4 and which may be removable, for example, and a supply circuit fluidly connected to the water tank 5. The supply circuit comprises, in particular, a water duct 6 fluidly connecting the water tank 5 to the iron 3, and a water supply pump (not shown in the figures) integrated in the soleplate 4 and configured to supply the iron 3 with water from the water tank 5.

The iron 3 comprises a housing 7 and an ironing base plate 9, the housing 7 comprising a gripping portion 8 at its upper end, the ironing base plate 9 being provided with a substantially flat ironing surface 11 and a plurality of steam outlet apertures 12 opening into the ironing surface 11.

As shown more particularly in fig. 2, the iron 3 also comprises a heating body 13, which heating body 13 is integrated in the lower part of the casing 7 and is thermally and mechanically connected to the ironing base plate 9. The heating body 13 comprises a casting 14, for example made of aluminium, and a closing plate 15 resting on the casting 14.

The heating body 13 also comprises an evaporation chamber 16 of the instantaneous evaporation type, delimited by the casting 14 and by the closing plate 15. The casting 14 more particularly comprises a peripheral wall 17 laterally delimiting the evaporation chamber 16. Advantageously, the interior of the evaporation chamber 16 is at least partially, for example almost completely, covered by the anti-fouling coating.

The heating body 13 also comprises a first heating resistance 18 and a second heating resistance 19 integrated in the casting 14. Preferably, the first heating resistance 18 and the second heating resistance 19 have a shape of approximately U, V or Ω.

As can be seen more particularly in fig. 10, the first heating resistor 18 and the second heating resistor 19 are shown separately therein. The first heating resistance 18 comprises a first branch 18.1 extending near a first side of the evaporation chamber 16 and a second branch 18.2 extending near a second side of the evaporation chamber 16, the first branch 18.1 and the second branch 18.2 being interconnected by a curved connecting portion 18.3.

The second heating resistor 19 extends within the first branch 18.1 and the second branch 18.2 of the first heating resistor 18. The second heating resistance 19 further comprises a first branch 19.1 extending near a first side of the evaporation chamber 16 and a second branch 19.2 extending near a second side of the evaporation chamber 16, the first branch 19.1 and the second branch 19.2 being interconnected by a curved connecting portion 19.3.

More specifically, according to the invention, the first heating resistance 18 and the second heating resistance 19 are arranged head-to-foot.

In order to allow the supply of power to the first heating resistance 18 and to the second heating resistance 19, the first heating resistance 18 comprises two

connection terminals

18A, 18B projecting outside of the casting 14 on the side of the rear end of the heating body 13, and the second heating resistance 19 comprises two

connection terminals

19A, 19B projecting outside of the casting 14 on the side of the front end of the heating body 13.

Preferably, the cumulative power of the first heating resistor 18 and the second heating resistor 19 is greater than 2400W. As an example, the first heating resistance 18 may have an electric power of about 2000W, while the second heating resistance 19 may have an electric power of about 1000W, the distribution of which allows balancing the density of the power according to the respective lengths of the two heating resistances in order to reach a total power of 3000W.

Advantageously, the first heating resistance 18 extends in a first plane of extension and the second heating resistance 19 extends in a second plane of extension substantially parallel to the first plane of extension and preferably substantially parallel to the plane in which the ironing surface 11 lies.

According to the embodiment shown in the figures, the first heating resistance 18 is located at a higher level than the second heating resistance 19 when the ironing surface 11 rests on the horizontal surface support.

The evaporation chamber 16 comprises a bottom wall 21 on which the water flows to generate the steam, advantageously having a plurality of pyramidal studs protruding on the bottom wall 21, so as to increase the heat exchange area. The bottom wall 21 has a substantially quadrangular shape and advantageously comprises a raised surface 22 in a central longitudinal region of the bottom wall 21. The convex surface 22 is more specifically convex in a transverse direction D1, which transverse direction D1 extends transversely to the longitudinal direction D2 of the iron 3.

According to the embodiment shown in the figures, the raised surface 22 is arranged symmetrically with respect to the longitudinal mid-plane of the iron 3 and comprises a first wall portion 22.1 inclined to a first side edge of the bottom wall 21, a second wall portion 22.2 inclined to a second side edge of the bottom wall 21, and a longitudinal ridge 22.3 connecting the first wall portion 22.1 and the second wall portion 22.2. The longitudinal ridge 22.3 may, for example, extend in a longitudinal middle plane of the iron 3 and may, for example, have a circular cross-section.

Advantageously, the first heating resistance 18 extends in a first region of the bottom wall 21 located at the periphery of the bottom wall 21, while the second heating resistance 19 extends in a second region of the bottom wall 21 located at the periphery of the convex surface 22. In other words, the first heating resistance 18 extends at the periphery of the bottom wall 21 and the second heating resistance 19 extends at the periphery of the convex surface 22.

The bottom wall 21 further comprises an intermediate zone 23 extending between the first zone and the second zone of the bottom wall 21, the intermediate zone 23 thus extending between the raised surface 22 and the periphery of the bottom wall 21. The intermediate region 23 more particularly comprises two lateral flow paths 23.1, 23.2 extending between the first and the second heating resistances, each lateral flow path being inclined to the rear of the evaporation chamber 16, and the raised surface 22 being configured to guide the water flowing on the raised surface 22 towards the two lateral flow paths 23.1, 23.2.

The heating body 13 further comprises an adjusting stud 24 at the rear end of the evaporation chamber 16, between the two lateral flow paths 23.1, 23.2, each lateral flow path 23.1, 23.2 being inclined to the rear of the evaporation chamber 16, i.e. to the adjusting stud 24. The two lateral flow paths 23.1, 23.2 are advantageously located below the contour of the convex surface 22 at the rear of the evaporation chamber 16, so that a height difference (marche) is formed between the bottom of the two lateral flow paths 23.1, 23.2 and the contour of the convex surface 22. The rear end of the evaporation chamber 16 has two blocking walls 20 projecting laterally on the bottom wall 21 of the evaporation chamber 16, these two blocking walls 20 keeping the water flowing along the lateral flow paths 23.1, 23.2 between the adjusting studs 24 and the peripheral wall 17, forming a holding cavity 27 upstream of the blocking walls 20.

As shown more particularly in fig. 2 and 3, an adjustment stud 24 is formed by the casting 14 and is located at the rear of the raised surface 22, the upper end of the adjustment stud extending through the closure plate 15. According to the embodiment shown in the figures, the iron 3 comprises a temperature regulator (not shown) mounted on the regulating stud 24, and the bottom wall 21 is configured to guide the flow of water on the bottom wall 21 towards the regulating stud 24 and the intermediate area 23.

The heating body 13 also comprises an additional regulating stud 26 located at the front of the evaporation chamber 16. Advantageously, the additional adjustment stud 26 is located vertically above the bent end of the first heating resistance 18 and the adjustment stud 24 is located above the bent end of the second heating resistance 19. As shown more particularly in fig. 2 and 3, an additional adjustment stud 26 is formed from the casting 14 and extends through the closure plate 15. According to the embodiment shown in the figures, the iron 3 comprises an additional temperature regulator (not shown) mounted on the additional regulating stud 26.

The iron 3 advantageously comprises adjustment means (not shown in the figures) of the microcontroller type, configured to adjust the power supply of the first heating resistance 18 by means of an additional thermostat mounted on an additional adjustment stud 26 located in front of the steam chamber 16, and to adjust the power supply of the second heating resistance 19 by means of a thermostat mounted on an adjustment stud 24 located behind the evaporation chamber 16.

The heating body 13 also comprises a water injection port 28, which is fluidly connected to the supply pump and opens into the front of the evaporation chamber 16, and is for example near the front end of the bottom wall 21. The supply pump is therefore configured to supply water from the tank 5 to the evaporation chamber 16 at a pressure greater than 500Pa, the assembly being adapted to generate a steam flow greater than 60gr/min according to a standardized period of evaporation for 5 seconds, stopping for 15 seconds.

Advantageously, a water injection port 28 is provided on the closing plate 15 and opens into the evaporation chamber 16, above the water injection zone located near the front end of the bottom wall 21, and between the branches of the second heating resistance 19. Advantageously, the bottom wall 21 has a top portion substantially below the water injection port 28.

The iron 3 further comprises a steam distribution circuit 29 defined by the casting 14 and the closing plate 15, which fluidly connects the evaporation chamber 16 to the steam outlet aperture 12, so that steam generated in the evaporation chamber 16 can flow to the steam outlet aperture 12.

The steam distribution circuit 29 comprises, in particular, a scale collection chamber 31 comprising a discharge hole 32 closed by a removable plug 33, which is accessible from the outside of the iron 3. Advantageously, the discharge hole 32 opens to the rear surface of the housing 7 of the iron 3.

The scale collection chamber 31 is disposed rearward of the evaporation chamber 16, and is connected to the evaporation chamber 16 through a connection opening 34 that opens to the rear end of the evaporation chamber 16. When the iron 3 rests on the ironing base plate 9, the scale collection chamber 31 is advantageously located in the portion of the housing 7 that protrudes (porte-a-faux) behind the ironing base plate 9.

The iron 3 further comprises a scale collection container 35, for example removably mounted in the scale collection chamber 31. The scale collection container 35 is configured to collect scale particles from the evaporation chamber 16. When the ironing base plate 9 is inclined with respect to the horizontal plane, and for example when the iron 3 rests on the soleplate 4, these scale particles may fall by gravity from the evaporation chamber 16 and may also be entrained by the steam from the evaporation chamber 16. Advantageously, the scale collection container 35 is integrally connected to the removable plug 33.

The scale collection vessel 35 may optionally comprise a filter element having a through-hole configured to retain scale particles entrained by steam flowing in the steam distribution circuit. Advantageously, each through hole has a size comprised between 0.05mm and 0.5 mm.

Preferably, the steam distribution circuit 29 comprises two air discharge channels 25 symmetrically provided on either side of the connection opening 34, which two air discharge channels 25 connect the scale collection chamber 31 to a steam distribution chamber arranged below the heating body 13, as can be seen in fig. 8, to supply the steam output holes 12 of the ironing base plate 9.

When water is injected into the evaporation chamber 16 of the iron 3 through the water injection port 28, a part of the injected water is evaporated by contacting the raised surface 22 located below the water injection port 28, the adjustment stud 24 forming an obstacle preventing water from flowing directly to the connection opening 34 formed at the rear of the evaporation chamber 16 when the unevaporated water is guided by the raised surface 22 towards the adjustment stud 24 and the two lateral flow paths 23.1, 23.2. The unevaporated water then flows in the form of a pool of water along the two lateral flow paths 23.1, 23.2 and to the rear of the evaporation chamber 16 under the combined effect of, inter alia, gravity (the lateral flow paths sloping backwards) and the resistance associated with the flow of steam to the connection opening 34.

When a pool of water reaches the blocking wall 20 (through either of the two lateral flow paths 23.1, 23.2), this pool of water is blocked in a holding chamber 27 formed upstream of the blocking wall, at the foot of the adjusting stud 24, to lower the temperature of the adjusting stud 24, which allows the thermostat to inform the adjusting means to activate the supply of electricity to the second heating resistance 19. The thermal power absorbed by this share of water located very close to the first heating resistance 18 and the second heating resistance 19 allows to absorb a volume of share of water, the presence of the blocking wall 20 allows to prevent water from being entrained to the connection opening 34 and therefore to the scale collection container 35.

In addition, scale particles formed in the evaporation chamber 16 are entrained by this water flow moving towards the rear of the evaporation chamber 16 and are also entrained by the steam flow under the effect of the entrainment force, the direction in which the scale particles are entrained being directed towards the connection opening 34 and the scale collection container 35. Thus, the scale particles are collected by the scale collection container 35.

Of course, the invention is in no way limited to the embodiments described and shown, which are given by way of example only. Modifications are still possible, in particular from the point of view of the construction of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Thus, in an alternative embodiment not shown, water may be injected drop-wise into the evaporation chamber through a tap hole (boisseau), the water being supplied from the container by gravity rather than by a pump.

Claims

1. Iron (3) comprising an ironing base plate comprising at least one steam outlet hole (12) and a heating body (13) comprising an evaporation chamber (16), said evaporation chamber (16) being connected to the at least one steam outlet hole (12) by a steam distribution circuit, said evaporation chamber (16) having a bottom wall (21) comprising a water injection zone in which water is injected to generate steam, said heating body (13) comprising a first heating resistance (18) extending in a first region of the bottom wall (21) and a second heating resistance (19) extending in a second region of the bottom wall (21), said first heating resistance (18) having a bent portion (18.3) extending between two connection ends (18A, 18B) for the powering thereof, and said second heating resistance (19) having a bent portion (19A, 19B) at two connection ends, 19B) A bent portion (19.3) extending therebetween for the supply of said second heating resistance, characterized in that said first heating resistance (18) and said second heating resistance (19) are arranged head to foot, the bent portions (18.3, 19.3) of the first resistance (18) and of the second resistance (19) being arranged opposite each other.

2. Iron (3) according to claim 1, characterized in that the iron (3) comprises adjustment means configured to adjust the supply of power to the first heating resistance (18) and the supply of power to the second heating resistance (19) independently.

3. Iron (3) according to any one of claims 1 to 2, characterized in that said connection ends (18A, 18B) of said first heating resistance (18) protrude from the side of the rear end of said heating body (13) to the outside of said heating body (13), and said connection ends (19A, 19B) of said second heating resistance (19) protrude from the side of the front end of said heating body (13) to the outside of said heating body (13).

4. Iron (3) according to the preceding claim, characterized in that it comprises adjustment means configured to adjust the supply of electricity to the second heating resistance (19) by means of a thermostat mounted on an adjustment stud (24) located at the rear of the evaporation chamber (16), and to adjust the supply of electricity to the first heating resistance (18) by means of an additional thermostat mounted on an additional adjustment stud (26) located at the front of the evaporation chamber (16).

5. Iron (3) as in any one of the claims 1 to 4, characterized in that the first heating resistance (18) extends to the periphery of the bottom wall (21) and the second heating resistance (19) extends below the bottom wall (21).

6. Iron (3) according to any of the claims 1 to 5, characterized in that said first heating resistance (18) comprises a first branch (18.1) extending near a first side of said evaporation chamber (16) and a second branch (18.2) extending near a second side of said evaporation chamber (16), said second side being opposite to said first side.

7. Iron (3) as in any one of the claims 1 to 6, characterized in that the second heating resistance (19) extends inside the first branch (18.1) and the second branch (18.2) of the first heating resistance (18).

8. Iron (3) as claimed in any one of the claims 1 to 7, characterized in that the first heating resistance (18) and the second heating resistance (19) have a cumulative power greater than 2400W.

9. An iron (3) as claimed in any one of claims 1 to 8, characterized in that the evaporation chamber (16) is laterally delimited by a peripheral wall (17) comprising a connection opening (34) through which steam escapes from the evaporation chamber (16) to enter a scale collection chamber (31) comprising a scale collection container (35).

10. Iron (3) according to any of the claims 1 to 9, characterized in that the bottom wall (21) comprises an intermediate zone (23) extending between the first zone and the second zone, the water injection zone of the bottom wall (21) comprising a surface (22), the surface (22) being configured to guide the flow of water over the water injection zone towards the intermediate zone (23) when the iron is lying flat on the ironing base plate (9).

11. Iron (3) according to the preceding claim, characterized in that the supply of electricity to the second heating resistance (19) is regulated by a thermostat mounted on the regulating stud (24) provided on the flow path of the water flow injected by the water injection zone to the bottom wall (21).

12. Iron (3) as claimed in any one of the claims 10 to 11, characterized in that the intermediate zone (23) comprises at least one holding chamber (27) for holding a quantity of water.

13. Iron (3) according to the preceding claim, characterized in that the holding chamber (27) is provided at the foot of the adjusting stud (24).

14. Iron (3) according to any of the claims 12 to 13, characterized in that the adjusting stud (24) is arranged in the vicinity of the curved portion (19.3) of the second heating resistance (19).

15. Ironing device (2) comprising an iron (3) according to any one of the preceding claims, a water tank (5) and a supply circuit fluidly connected to the water tank and configured to supply water to the evaporation chamber (16).