Vaporization chamber for hair styling appliance for diffusing vapor

Abstract

The invention relates to a vaporizing chamber for a hair styling appliance for diffusing steam, comprising a hollow body defining a free interior space between at least one inlet for supplying liquid water to be vaporized and at least one outlet for water in the form of steam, the vapour chamber is characterized in that the one or more inlets for supplying liquid water together have a plurality of orifices leading to the interior of the vaporizing chamber and spaced apart from each other.

Description

[0001] The invention relates to a steam chamber, in particular for a hair styling appliance which diffuses steam and is intended to shape or style a head of hair. The appliance is more particularly a hair brush capable of diffusing steam onto the hair.

[0002] Many types of household electric hair styling appliances are known, in particular for shaping a head of hair by straightening, curling or perming. Mention may be made, by way of example, of hair straighteners or curling irons, or hair brushes. These appliances may comprise one or more heated or heat-treated surfaces. The general design of such appliances is well known.

[0003] To improve treatment, some appliances distribute steam over a period of time towards the surface to be treated, in the case of hair styling appliances, particularly towards a lock of hair or the entire head of hair.

[0004] Thus, for example, document US 2 880 299 A describes a curling iron capable of dispensing steam onto a strand of hair held between two articulated arms and wound around said arms. The steam is generated directly from a reservoir containing liquid water, which reservoir thus also serves as a vaporization chamber. Document EP 3 097 815 implements a similar system, with the difference that the reservoir has been moved away from the portable treatment unit so that its capacity can be increased.

[0005] As far as documents US20040000319 A1 and US2009188516 A1 are concerned, they describe appliances of the hair straightener type which are also capable of distributing steam to a strand of hair clamped between two arms, each of which is equipped with a heating plate. In document US 2004000319, liquid water contained in a reservoir comes into contact with an evaporation plate via a porous pad. In document US2009188516, steam is generated in a steam generator which is remote from the treatment unit and is not described in detail.

[0006] Finally, heated or non-heated brushes and combs can also be mentioned, which can distribute steam through a head of hair when used. For example, reference can be made to documents KR 20030085159A and DE 19822718 A1. These documents provide almost no details about the way in which steam is generated.

[0007] However, several appliances are known in which the steam is produced by a steam generator, which is essentially composed of a chamber supplied with liquid water from a separate reservoir, the liquid water being heated to a sufficiently high temperature to evaporate it. Such a system makes it possible to optimize and better control the flow rate of the steam distributed and the energy consumed for vaporization.

[0008] The steam thus generated is then brought to or close to the treatment surface where it is distributed through one or more nozzles. For a precise description of such steam generators, reference may be made in particular to US 3934597, US 3921648, WO 2017174035 A1, WO 2017089582 A1, WO 2020127851 A1 and WO 2020127852 A1.

[0009] A common problem of appliances implementing steam treatment is the accumulation of scale in the steam generator of the appliance. Such accumulation of scale may cause the inlet aperture for liquid water and / or the steam outlet aperture to become blocked.

[0010] Furthermore, unlike clothes iron type appliances (in which case a certain amount of scale reaching the steam distribution orifice is acceptable), this is undesirable in the case of hair treatment appliances. In any case, the steam flow rate for these appliances is much lower (at 0.5 g.min. -1 With 5g.min -1 between 1 g and min, especially for the latest appliances which are particularly compact and combine all components in a single portable unit. -1 ), which is not enough to remove the scale that reaches the diffusion orifice.

[0011] Therefore, it is necessary to retain the scale particles in the vaporization chamber. This is conventionally achieved by equipping the vaporization chamber with one or more obstacles, which are preferably arranged at a certain distance from the inlet for liquid water, as described in document EP 2 449 909 A1. The obstacles thus make it possible both to prevent the circulation of liquid water that has not yet been vaporized to the steam outlet orifice and to retain the scale particles formed at the inlet for liquid water.

[0012] Various solutions exist for slowing down or reducing the accumulation of scale at the inlet for liquid water in such appliances.

[0013] The first solution is to use distilled or demineralized water. However, this is not very practical and users usually prefer to be able to use tap water directly.

[0014] A second solution is to install a scale filter system between the reservoir and the steam generator. However, it is difficult to imagine that this solution can be implemented in an "all-in-one" portable appliance where the space for housing all the components is extremely limited. Moreover, the presence of such a filter causes pressure drops that may negatively affect the pumping means intended to transport the liquid water from the reservoir to the vaporization chamber.

[0015] Another solution is to make the vaporization chamber removable so that it can be cleaned. As mentioned above, this is difficult to implement in a "one-piece" appliance for domestic use. In addition, the vaporization chamber is a sensitive component and it is desirable to enable the user to remove and reinstall the vaporization chamber in a completely safe manner.

[0016] Document WO2017089582 provides a solution to scale accumulation by providing an inclined vaporizing element, thereby allowing scale particles and other particles to fall from the vaporizing element to be collected. In addition to the above-mentioned problems caused by incorporating a collector in an appliance that needs to be particularly compact, the manipulation of hair treatment appliances (such as straightening / curling irons or brushes) makes it possible for the collector to be located in any direction. Therefore, the idea of ​​inclined walls and particle shedding loses its appeal.

[0017] Document WO 2020127851 provides for at least partially covering the inner surface of the vaporization chamber with a hydrophobic layer, said layer being positioned at least below the injection point of the liquid water. The presence of a hydrophobic layer below the injection point will avoid any vaporization of this liquid at this particular location, since the liquid is further repelled. Although effective, this solution makes the manufacturing of the chamber more complicated and more expensive.

[0018] Alternatively or additionally, document WO 2020127852 for its part provides an inlet duct for liquid water in the vaporization chamber, the inlet duct having an opening extending substantially along the injection duct from a free end forming an injection point, the shape of the opening allowing liquid from the reservoir to flow into the vaporization chamber in the event of accumulation and deposition of scale at the free end of the injection duct. This solution does not require modification of the basic design of the vaporization chamber. However, in the event of accumulation of scale at the ends, the liquid water must then accumulate in sufficient quantity to overcome the level of the obstruction. It is also noted that in the case where the vaporization chamber is heated to high temperatures (e.g. greater than or equal to 180° C.), this design will not allow optimal distribution of the scale, vaporization occurring very quickly and in a very localized manner.

[0019] The present application aims to propose alternative or complementary solutions to some of these systems, thereby coping with their limitations.

[0020] To this end, the present application relates to a vaporization chamber comprising a hollow body defining a free internal space capable of allowing a fluid to circulate between at least one inlet for supplying a liquid product to be vaporized and at least one outlet for at least partially vaporizing said product.

[0021] According to the invention, the steam chamber is characterized in that the one or more inlets for supplying the liquid product together have a plurality of orifices leading to the interior of the vaporization chamber and spaced apart from each other. The orifices are spaced apart from each other by at least 5 mm, preferably at least 8 mm, or even at least 10 mm.

[0022] Thus, by providing a plurality of separate and spaced apart orifices for introducing liquid water into the vaporization chamber, the risk of obstruction of the liquid water supply is greatly reduced. Specifically, when scale builds up at an orifice to the point of obstruction, liquid water can still pass through the other available orifice or orifices. This also allows for a better distribution of scale, with liquid water vaporizing at different locations in the chamber, rather than at almost a single location. This naturally results in a better distribution of scale formed by evaporation within the chamber, thereby avoiding the risk of complete obstruction later on.

[0023] Furthermore, since no additional parts or additional coatings are required, this has little impact on the design of the vaporization chamber or affects the design of the vaporization chamber in a relatively simple way to implement.

[0024] Preferably, the product to be vaporized is water, in particular non-demineralized, non-distilled and non-filtered water. Preferably, the hardness (hardness level) of the water used is greater than 8°F, preferably greater than 15°F. Preferably, the hardness of the water used is less than or equal to 30°F. If necessary, the water used can optionally be softened in order to reduce its hardness to between 15°F and 30°F, preferably between 15°F and 20°F.

[0025] The number of orifices provided can advantageously be greater than three, and in particular between three and ten orifices.

[0026] The orifices may each have a substantially circular but preferably elliptical cross-section.

[0027] The orifices may each have a width of 0.1 mm. 2 With 6mm 2 The cross section between.

[0028] According to a first embodiment, the inlet for supplying the liquid product is in the form of a pipe having an end portion extending inside said vaporization chamber and having a plurality of orifices spaced along the end portion. In particular, the supply inlet consists of a single pipe.

[0029] Document WO 2017174035 A1 provides an inlet for liquid water in the form of a tube 1125 having a plurality of supply orifices 1140 open on both sides of the tube, but it should be noted that the vaporization chamber does not define a free space as in the present application, but rather comprises a porous material 1126 occupying the internal volume. According to the present application, the vaporization chamber has at least a free space, which does not have a porous material around the orifice for supplying liquid water (at least 2 mm, or 5 mm, or better still 10 mm away from the orifice for supplying liquid water). The free space particularly allows the liquid water leaving the orifice to directly reach contact with at least one evaporation surface of the chamber. Preferably, the vaporization chamber is completely free of porous material.

[0030] Preferably, the orifices are regularly spaced. In particular, an orifice may be provided every 5 mm along the conduit. The end portion of the conduit extending within the vaporisation chamber may generally be between 20 mm and 60 mm, typically around 39 mm to 40 mm.

[0031] Advantageously, the orifices are distributed along substantially the entire length of the terminal portion of the duct forming the supply inlet.

[0032] Preferably, the terminal portion of the conduit forming the supply inlet has a closed distal end.

[0033] According to a preferred embodiment variant, the orifices are arranged along at least two longitudinal axes of the pipe, which form a non-zero angular sector between each other and the longitudinal center axis of the pipe. In other words, the orifices are arranged in an offset manner along the pipe. Preferably, the angular sector is substantially equal to 180°, which means that the orifices are arranged along longitudinal axes located on both sides of the longitudinal center axis of the pipe and in a diametrically opposite manner relative to this longitudinal center axis.

[0034] Preferably, the orifices, at least in relation to some of the orifices, preferably all of the orifices, are arranged alternately along the two longitudinal axes.

[0035] According to a second embodiment, the vaporization chamber comprises a plurality of inlets for supplying the liquid product to be vaporized, each supply inlet having at least one orifice opening into the interior of the vaporization chamber.

[0036] According to a first variant, at least one inlet for supplying the liquid product to be vaporized has a single orifice leading to the interior of the vaporization chamber. Preferably, the orifice is in the form of an open distal end of the inlet for supplying the liquid product to be vaporized. This open distal end may be beveled or cut longitudinally, as described in document WO 2020127852 cited above.

[0037] Preferably, all supply inlets each have a single opening aperture.Alternatively, at least one inlet may be a duct according to the first embodiment.

[0038] According to a particular embodiment, at least some of the orifices leading to the interior of the vaporization chamber, preferably all of these orifices, open at a non-zero distance from the inner surfaces of the body forming said vaporization chamber, these inner surfaces including the surface of the peripheral wall and, as the case may be, the surface of the internal obstacles.

[0039] The present application also relates to a domestic appliance for diffusing steam, the domestic appliance comprising at least one reservoir capable of containing a quantity of liquid product to be vaporized and being fluidly connected to at least one inlet for supplying the liquid product to a vaporization chamber separate from the reservoir, the vaporization chamber having at least one outlet for at least partially vaporized product, the at least one outlet being fluidly connected to a vapor diffusion orifice of a treatment surface of the appliance. According to the present application, the appliance is characterized in that the vaporization chamber is a chamber according to the invention as described above.

[0040] The term "domestic appliance" is understood to mean appliances and tools which use electricity and are intended for household purposes.

[0041] Preferably, the product to be vaporized is water, in particular non-demineralized, non-distilled and non-filtered water. In particular, the hardness (hardness level) of the water used is greater than 8°F, preferably greater than 15°F. Preferably, the hardness of the water used is less than or equal to 30°F. If necessary, the water used can optionally be softened in order to reduce its hardness to between 15°F and 30°F, preferably between 15°F and 20°F.

[0042] Further advantageously, the vaporization chamber can be supplied with the liquid product contained in the reservoir via at least one active pumping member.Preferably, the pumping member is an electric member, in particular a positive displacement pump, such as a peristaltic pump or a diaphragm pump.

[0043] In the case where the vaporization chamber comprises several inlets for liquid water, the supply from the reservoir may be carried out via a dedicated pipe. However, a pipe comprising one or more branching points may be used so as to maintain a reservoir with a single outlet and a single pumping member delivering water towards several branches, each of which is connected to a liquid water inlet of the vaporization chamber. However, it should be noted that such a branching point is prone to sudden increases or irregularities in the liquid water supply, and a solution using pipes and dedicated pumping members would be preferred. In addition, the supply pipes or their branches downstream of the branching points may be equipped with non-return valves.

[0044] Preferably, the appliance is a hair styling appliance, such as a hair straightener or a hair brush.

[0045] The term "brush" refers to a device for treating hair, the device comprising a single arm carrying a plurality of teeth between which the hair is received as the brush is passed through a head of hair. A brush may have a single row of teeth (in which case the brush is also referred to as a comb) or may have multiple rows of teeth. The brush may include a heat treatment surface. The teeth may also be actively heated or may not be actively heated.

[0046] "Hair straightener" means a hair treatment device having two arms which are articulated relative to each other about a hinge between an open configuration and a closed configuration. At least one arm, and preferably each arm, is equipped with a treatment surface in the form of a heating plate. During operation for treating a strand of hair, the strand of hair is introduced between the two arms in the open position and then the two arms are manually closed over the strand of hair. The strand of hair is then subjected to the heat output by the heating element until the two arms are opened and the strand of hair is removed, wherein the appliance can be moved along the strand of hair.

[0047] Advantageously, the steam chamber, and preferably the reservoir, is incorporated in the portable treatment unit of the appliance. In particular, the reservoir may be incorporated in the handle of the appliance, and the vaporization chamber may preferably be located near the treatment surface of the appliance in order to minimize the steam path from the vaporization chamber to the diffusion nozzle. The pumping member may of course also be incorporated in the handle.

[0048] Advantageously, the vaporization chamber is configured to be able to reach a temperature greater than or equal to 180°C.

[0049] Further objects, features and advantages of the present invention will become apparent from a reading of the following description given by way of non-limiting example only and with reference to the accompanying drawings, in which:

[0050] [ Figure 1 ] is a schematic diagram of a longitudinal cross-section of a hair brush capable of applying steam to the hair.

[0051] [ Figure 2 ]yes[ Figure 1 ] is a schematic diagram of a longitudinal section of the processing part of the hair brush in FIG. 1 , showing the vaporization chamber.

[0052] [ Figure 3 ] is a schematic diagram of a vaporization chamber according to the present application and according to a first embodiment.

[0053] [ Figure 4 ]yes[ Figure 3 Schematic diagram of the distribution of fouling accumulation over time in the vaporization chamber in ].

[0054] [ Figure 5 ] is a schematic diagram of a vaporization chamber according to the present application and according to a second embodiment.

[0055] [ Figure 1] is a schematic diagram of a longitudinal cross-section of a hair brush 100 capable of distributing steam to the hair.

[0056] Although shown as a hair brush by way of example, the present application may also relate to other household electric appliances distributing water steam, in particular other household electric hair treatment appliances capable of distributing water steam onto the hair.Another example of an appliance is a hair straightener as specifically described in document FR 2967018A1.

[0057] The hair brush 100 has a gripping handle 110 and a treatment head 120. The head 120 has a set of teeth 121 arranged along rows on a support plate 122. The rows of teeth 121 extend substantially along the longitudinal axis X of the brush.

[0058] In the example shown, the support plate 122 is substantially flat and has a substantially rectangular shape extending in the continuation of the gripping handle 122. Of course, it is conceivable to have a curved support plate, the teeth 121 then preferably being located on a concave surface of the support plate, or even a substantially cylindrical support plate.

[0059] In a specific embodiment, the support plate 122 and / or the teeth 121 may be heated. Preferably, only the teeth 121 or only some of the teeth 121 are heated.

[0060] The head 120 also has a plurality of steam outlets 130 opening out on the support plate 122. The steam outlets or nozzles 130 may be located between the teeth 121 in one or more rows, or may be separate, in particular arranged along the edge of the support plate 122.

[0061] Alternatively, the steam outlet 130 may be made in the tooth 121 , in particular open on one side of the tooth.

[0062] According to the embodiment shown, the steam nozzles 130 open between teeth 121 of the same row, in this case between teeth of the middle row, thereby forming a row of steam outlets 130 extending substantially in the continuation of the handle 110 .

[0063] Steam is delivered to the steam outlet from a vaporization chamber 350 incorporated in the appliance 100, through one or more diffusion channels passing through the support plate 122 and the teeth 121 (if applicable). According to the example shown, the vaporization chamber 350 is incorporated in the head 120, behind the support plate 122. Such elements are well known to those skilled in the art.

[0064] In general, the vaporization chamber 350 comprises a hollow body forming an enclosure and defining a free internal volume, that is to say, not occupied by any filling material, in particular without absorptive elements, which hollow body is capable of allowing a fluid to circulate between at least one inlet for supplying liquid water to be vaporized and at least one outlet for water in the form of steam.

[0065] The volume of the vaporization chamber is preferably from 20 cm 3 Up to 100cm 3 , and better from 30cm 3 Up to 70cm 3 , for example, about 45 cm 3 .

[0066] The reservoir may have a volume between 1 mL and 50 mL.

[0067] To this end, the vaporization chamber 350, in particular the liquid water is intended to be in contact with so that the vaporized portion can be heated to a sufficient temperature, in particular by means of a heating resistor element in contact with the wall of said chamber. More particularly, the heating temperature is greater than 180° C. If necessary, the heating resistor element can be shared between the vaporization chamber and the heating treatment surface of the household electrical appliance. The heating elements can also be separate, in particular so as to be able to be controlled independently.

[0068] The vaporization chamber 350 further comprises one or more internal walls which together form an obstacle 351 between the inlet for liquid water and the outlet for water in the form of steam. In particular, the obstacle is located near the outlet for water in the form of steam. Thus, preferably, less than 50%, preferably about 25%, of the internal space of the vaporization chamber is provided with obstacles, and more than 50%, preferably about 75%, of its internal space is free of obstacles, and liquid water is supplied into the area free of obstacles.

[0069] The steam outlet is usually in the form of one or more orifices, in particular in the form of grooves or slots made in an upper wall of the vaporization chamber, which forms a cover for closing and sealing the vaporization chamber.

[0070] The vaporization chamber is supplied with liquid water from a reservoir 300 by a positive displacement pump 200, such as a peristaltic pump or a diaphragm pump. The reservoir 300 is incorporated in the device consisting of the hair brush 100, in particular in the handle 110 of the hair brush. The reservoir may advantageously be removable so that it can be easily replaced. In addition, a filling hole 301 may be provided in the wall of the handle 110. The filling hole 301 may be equipped with a valve for preventing liquid from leaking out of the reservoir 300. A pump is also incorporated in the handle of the device.

[0071] Preferably, the device is configured to supply liquid water to the vaporization chamber so as to achieve a flow rate greater than or equal to 0.5 g.min -1 And less than or equal to 5g.min -1 Preferably, the vapor diffusion flow rate is less than or equal to 1 g.min -1 , preferably about 0.8 g.min -1 .

[0072] According to the present application, the one or more inlets for supplying the liquid product jointly have a plurality of orifices opening into the interior of the vaporization chamber and spaced apart from one another.

[0073] [ Figure 3 ] partially shows a first exemplary embodiment of such a vaporization chamber 400.

[0074] According to this embodiment, the vaporization chamber 400 comprises an inlet for supplying liquid water in the form of a single pipe or tube 401 which passes through a wall 402 of the vaporization chamber 400 (in this case the wall over the width) and has an end portion 403 extending inside said vaporization chamber 400, more particularly in an area free of obstacles.

[0075] More particularly, the tube 401 extends over at least half, more preferably about 80%, of the separation distance separating the wall 402 traversed by the tube and the opposing wall 404 of the vaporization chamber 400. More particularly, the vaporization chamber 400 is configured such that this separation distance substantially corresponds to the length of the vaporization chamber.

[0076] According to the present application, the end portion 403 of the tube 401 for supplying liquid water has a plurality of orifices 405 which are spaced apart from one another and are arranged along said end portion 403, in particular along substantially the entire length of the end portion 403 extending in the vaporization chamber 400. The orifices 405 are regularly spaced apart. There are eight orifices.

[0077] According to the embodiment variant shown, the terminal portion 403 of the tube 401 forming the supply inlet has a closed distal end 406. The only opening for dispensing liquid water is therefore the lateral orifice 405 provided along the tube.

[0078] like[ Figure 4 ], the orifices may be arranged alternately on both sides of the longitudinal axis of the end portion 403. In this way, the distribution of the liquid water flow, and therefore the distribution of the scale formed during the evaporation process, is optimal.

[0079] [ Figure 5 ] shows a second exemplary embodiment of such a vaporization chamber 500.

[0080] According to this embodiment, the vaporization chamber 500 comprises a plurality of inlets for supplying liquid water, which inlets are distributed, preferably regularly distributed, along a wall 503 of the chamber, which preferably extends in the length direction of said chamber 500 .

[0081] As previously mentioned, the feed inlet is arranged to open into an unobstructed area of ​​the vaporization chamber.

[0082] Each supply inlet is in the form of a pipe or tube 501 having an end portion extending within the vaporization chamber 500 and open at its end. The tube does not have an additional lateral orifice as in the first embodiment. As mentioned above, the open end of each tube 501 is cut longitudinally, as described in document WO 2020127852.

[0083] Of course, according to an embodiment variant, one or more of the tubes forming the supply inlet according to the second embodiment may be made in the form of a tube according to the first embodiment comprising a plurality of lateral orifices and preferably having a closed distal end.

[0084] Generally, it should be noted that the orifices for dispensing liquid water into the vaporization chamber open at a distance from the inner surfaces of the body forming said vaporization chamber, these inner surfaces including the surface of the peripheral wall and optionally the surface of the internal obstacles. In particular, each orifice opens at a distance of at least 1 mm from the walls of the vaporization chamber, in particular relative to the bottom wall and the opposite top wall. The distance of each orifice relative to the lateral walls of the chamber and the internal obstacles can alternatively reach at least 10 mm.

Claims

1. A household electric appliance for diffusing steam, the household electric appliance comprising at least one reservoir (300), the reservoir being capable of containing a certain amount of liquid product to be vaporized and being fluidly connected to at least one inlet for supplying the liquid product to a vaporization chamber (350, 400, 500), the vaporization chamber being separate from the reservoir and being capable of being supplied with the liquid product contained in the reservoir via at least one pumping member (200), the appliance being configured to supply liquid water to the vaporization chamber to obtain a vaporization pressure greater than or equal to 0.5 g.min. -1 And less than or equal to 5g.min -1 The vapor diffusion velocity, The vaporization chamber has at least one outlet for the at least partially vaporized product, the at least one outlet being in fluid connection with a vapor diffusion orifice (130) of a treatment surface of the appliance, The vaporization chamber comprises a hollow body defining a free internal space capable of allowing a fluid to circulate between an inlet for supplying a liquid product to be vaporized and an outlet for at least partially vaporizing the product, the vaporization chamber being characterized in that the one or more inlets for supplying the liquid product jointly have a plurality of orifices (405), each of the plurality of orifices having a diameter of 0.1 mm. 2 With 6mm 2 The cross section between the two openings opens into the interior of the vaporization chamber and is spaced apart from one another, the free interior space having no porous material over a distance of at least 2 mm around the orifice for supplying liquid water so as to allow the liquid water leaving the orifice to directly reach contact with at least one evaporation surface of the chamber.

2. The household electric appliance according to claim 1, characterized in that: The inlet for supplying liquid product to the vaporization chamber (400) is in the form of a pipe (401) having an end portion (403) extending within the vaporization chamber and having a plurality of orifices (405) spaced along the end portion.

3. The household electric appliance according to claim 2, characterized in that: The orifices (405) are regularly spaced.

4. The household electric appliance according to any one of claims 2 and 3, characterized in that: The orifices (405) are distributed substantially along the entire length of the end portion (403) of the duct (401) forming the supply inlet.

5. The household electric appliance according to any one of claims 2 to 4, characterized in that: The terminal portion (403) of the conduit forming the supply inlet has a closed distal end (406).

6. The household electric appliance according to any one of claims 2 to 5, characterized in that: The orifices (405) are arranged along at least two longitudinal axes of the pipe, the two longitudinal axes forming a non-zero angular sector between each other and the longitudinal center axis of the pipe.

7. The household electric appliance according to claim 6, characterized in that: The orifices (405), at least with respect to some of the orifices, are arranged alternately along the two longitudinal axes.

8. The household electric appliance according to any one of claims 1 to 7, characterized in that: The vaporization chamber (500) comprises a plurality of inlets for supplying liquid product to be vaporized, each supply inlet having at least one orifice opening into the interior of the vaporization chamber.

9. The household electric appliance according to claim 8, characterized in that: The vaporization chamber (500) comprises at least one inlet for supplying liquid product to be vaporized, the at least one inlet having a single orifice opening into the interior of the vaporization chamber.

10. The household electric appliance according to claim 9, characterized in that: The orifice of the vaporization chamber (500) is in the form of an open distal end of an inlet for supplying the liquid product to be vaporized.

11. The household electric appliance according to any one of claims 1 to 10, characterized in that: At least some of the openings (405) of the vaporization chamber (400, 500) leading to the interior of the vaporization chamber, preferably all of the openings, open at a non-zero distance from the inner surfaces of the body forming the vaporization chamber, which inner surfaces include the surface of the peripheral wall (503, 404) and, as the case may be, the surface of the internal obstacle (351).

12. The household electric appliance according to any one of claims 1 to 12, characterized in that: The appliance is a hair styling appliance, such as a hair straightener or a hair brush (100).

13. The household electric appliance according to any one of claims 1 to 13, characterized in that: The steam chamber (350, 400, 500), and preferably the reservoir (300), are integrated into a portable treatment unit of the appliance, in particular into a handle (110) of the appliance.

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