FR2955497A1 - Liquid product i.e. perfume, dispensing device i.e. catalytic lamp, for living place or workplace, has intake element connected to reservoirs to receive liquids and to conjointly and simultaneously supply liquids to dispensing head - Google Patents

Abstract

The device i.e. catalytic lamp (1), has a reservoir (111) containing a liquid e.g. diluted or concentrated product, with a substance to be dispensed, and for capillary supplying of the liquid to a dispensing head (130). Another reservoir contains another liquid e.g. dilution base. A movable intake element (12) is connected to the reservoirs to receive the liquids via a supply spindle (124) and to conjointly and simultaneously supply the liquids to the dispensing head.

Description

-1- Adjustable supply for diffusion device in the atmosphere by heating or combustion "

The present invention relates to a device for diffusing into the air a substance contained in a liquid product, for example more particularly by catalytic combustion but possibly also by electric heating, comprising a plurality of tanks connected by a mixing device to feed jointly. the same mechanism of diffusion.

It also relates to such a device provided with at least one movable inlet element for adjusting the proportions of this mixture. It also relates to different architectures comprising several reservoirs around such an intake element serving them to adjustably supply a diffusion head by catalytic combustion. It also relates to a particularly advantageous combination of these characteristics of flexibility of use with safety characteristics provided by an incorporated mobile protection device which improves safety by excluding the concomitance of filling and ignition operations.

TECHNICAL FIELD The field is that of apparatus for diffusing a substance in the ambient air, generally in gaseous form or in the form of a misting of very fine droplets, for example for a perfume or an active product such as a drug or a repellent or an insecticide, from a liquid form. The targeted devices are essentially small relatively simple and economic devices used in the context of a place of life or work, but also in a medical or paramedical for care or prevention or comfort. This is a category of devices that are characterized by their simplicity of manufacture and use: a type of device that generally does not have mechanisms or moving parts during the dissemination phase, which operate independently without being connected to other devices, most often autonomous energy or simply plugged into an electrical outlet, -2- which is usually controlled manually, and that diffuses the product directly into the ambient air without going through a forced circulation air circuit. This category is indeed very different from the sophisticated and / or voluminous appliances that are found in the field of industrial air treatment or heating or air conditioning. Indeed, the costs are totally different, as well as the size, the clientele and the conditions of use. A certain number of such devices for diffusing a product in the air use a liquid containing the product to be diffused, or the product itself directly in a volatile or even flammable liquid form, which is extracted from a reservoir and brought to a mechanism of diffusion by capillarity within a wick, for example textile. The diffusion mechanism itself operates very often by heating, for example in the form of a single burner or a catalytic burner, but also by electric heating or mechanical diffusion such as vibration or ultrasound. An example of such a device, the type of catalyst lamp, is described in the document WO 2008/034977 of the present applicants, which relates more particularly to improvements in terms of job security. In these diffusion devices, the flow of product diffused into the air depends mainly on the physico-chemical characteristics of the diffusion mechanism, for example the porosity of the burner, the thickness of the wick, and the concentration of the substance or active product inside the liquid introduced into the reservoir. However, it would be interesting to be able to perform different types of settings that are not currently available on common devices, especially in the price and technology levels accessible by most individuals and for non-vital use.

Thus, for catalytic lamps, consumers find in the market perfume bottles or refills at a fixed dose of perfumed concentrate, which can vary between 0.5% and 20% concentrate per liter of alcohol. In use, each refill therefore provides only one concentration, and therefore a single flow of perfume. Thus, it is regularly found that some consumers find the scent released too strong and sometimes even complain of headaches for this reason. In contrast, other consumers find that the dose of perfume is not strong enough and would like to obtain a more powerful scent. It would be interesting to be able to modify this flow, from one consumer to another but also from one use to another, for example depending on the person in the house, or time of day , or the place of use, or even depending on the volume of the room of use. Such an adjustment is indeed currently impossible in a simple way, without changing cartridges and / or suppliers, or engage in risky and inconvenient operations of manual dilution or mixing products, which are generally flammable and very often corrosive . In addition, it would also be interesting to be able to easily change product, for example to switch from one perfume to another, or even to mix several products during a single broadcast, without having to use several lamps together or to deliver to manual mixtures between liquids. This type of interesting possibilities may also be valid for other types of products to be diffused, for example mixtures based on medicinal essential oils, or dispensers of anti-mosquito or anti-moth products, for example by heating vaporization. electric from an electrical outlet. An object of the invention is to overcome the current drawbacks and shortcomings, to offer more choices and possibilities to users, to allow all or part of such adjustments or mixtures, and in particular: - allow adjustment of the product flow broadcast; - allow one to diffuse a mixture of different products - allow adjustment of the proportions of such a mixture - allow more easily the filling or the change of the product to be diffused - allow an easy and safe display of the fuel level. Another object of the invention is to combine all or part of these objectives with the qualities already sought, such as the non-burning of the wick, an easy extinction, and a protection of the head during the training phase. catalyzes alone. The combination of qualities of simplicity and versatility of use with safety qualities makes it possible in particular to design and market a product that can be used by a wider audience or in more varied and less supervised places, since requiring less precautions in all areas. aspects of its use, for example in small rooms or children's rooms. The invention also seeks to obtain such improvements in the context of a simple and economical device to produce, allowing good design freedom in terms of aesthetics and choice of materials, a certain simplicity of use and guaranteeing a good safety for example with regard to the risks of burning or fire. For this, the invention provides a device for diffusion into the air of a liquid product, comprising at least a first reservoir for containing a first liquid containing a first substance to diffuse and capillary supplying at least one diffusion head. According to the invention, this device comprises at least a second reservoir intended to contain a second liquid, as well as at least one device or a mixing region connected to both the first and the second reservoir so as to receive the first and the second second liquid and jointly feed the diffusion head. For this purpose, the invention proposes a device for diffusion into the air of a liquid product, of the type where the distribution in the ambient atmosphere is done by natural convection, and comprising at least a first reservoir intended to contain a first liquid. containing a first substance to diffuse and capillary supplying at least one diffusion head. According to the invention, this device comprises at least a second reservoir intended to contain a second liquid, as well as at least one intake element arranged to be able to be connected to both the first and the second reservoir so as to receive the first and the second liquid and simultaneously and simultaneously supplying said diffusion head. According to the invention, all the features described here are especially advantageous when applied to a simple and inexpensive diffusion device to manufacture and use, which generally does not comprise mechanisms or moving parts during the diffusion phase. , which operates independently without being connected to other devices, most often autonomous energy or simply plugged into an electrical outlet, which is usually controlled manually, and which diffuses the product directly into the ambient air without go through a forced circulation air circuit. Although these features can be applied to many types of such devices, they are especially valuable and provide a significant and consistent improvement for single-use lamp-type devices, such as those described herein. Mixing and adjustment by choice of cartridges In a simple way, the mere fact of using several tanks allows certain adjustments. It is thus possible to mix two substances to diffuse, using two tanks each containing a different product. It is also possible to provide on the one hand a reservoir (or more), for example of small size, to contain a product to diffuse in a more or less concentrated form, and secondly another tank for example larger for contain a dilution base.

The product reservoir (or each of them) can be for example a cartridge containing a very concentrated essential oil, or a cartridge containing a mixture already a little diluted product to be diffused. The dilution base may be for example a neutral base such as alcohol, or a product much more diluted (for example at least five to ten times more) than the product or products to be mixed. It is thus possible to choose the substance to be diffused by choosing and inserting a small cartridge as a small reservoir. The mixture of the two tanks will then produce a dilution to obtain the desired mixture in the head, with a good autonomy, without having to market, transport and store large cartridges for each desired product or fragrance. In addition, it is possible to market small cartridges having different concentrations, which allows to obtain several different concentrations in the mixture that will ultimately be released by the device. Thus, for example, by using only a reservoir with a product at a specific dilution, the other reservoir being empty or closed or absent, one will obtain a diffusion corresponding to this determined dilution. Differently, by using the same product in one tank and a dilution base in the other tank, it will be possible to obtain a diffusion with a lower concentration, for example two times less if the device is designed to achieve a mixture in equal parts between a product and a neutral base. Examples of types of mixtures Depending on the intended use types, different design choices can be made for the device, and in particular for the intake and sampling openings. The following examples are cited for the case of a catalytic combustion lamp type device. In the case of a reservoir containing a concentrated or diluted product and a reservoir containing a dilution base, the passage sections of the different openings are arranged and dimensioned to produce a mixture of a first so-called concentrated liquid containing a substance to be diffused. with a second dilution liquid containing less or no substance of said substance to be diffused. The dimensioning can be provided to obtain a mixture in variable proportions ranging for example from 0% to 10%, or even from 0.5% to 2%. It is thus possible to recreate and adjust a conventional dilution from a cartridge containing the substance in concentrated form, that is to say almost pure or in the form of essential oil. For a reservoir containing a concentrated or diluted product and a reservoir containing a diluted product, they may be arranged and dimensioned to form a mixture between at least a first liquid containing at least a first substance to be diffused, coming from a first reservoir, and at least one second liquid containing at least one second substance to diffuse distinct from the first substance to be diffused, from a second reservoir. The dimensioning can be provided to obtain a mixture in variable proportions ranging for example from 0% to 50%, or even from 0% to 100%. One can thus obtain for example, with the same device and the same cartridges, a diffusion -7- of the first unchanged product, or an adjustable mixture of the two different products. In a configuration with two tanks each containing a concentrated or diluted product and a third tank containing a dilution base, the passage sections can be arranged and dimensioned to achieve mixing, in variable proportions ranging from 0% to 10% or even 0.5% to 2% between: - on the one hand a mixture between at least a first liquid coming from a first reservoir and containing at least a first substance to be diffused and at least a second liquid coming from a second reservoir and containing at least a second substance to be diffused distinct from the first substance to be diffused, and - on the other hand a so-called dilution liquid containing less or not at all of said substances to be diffused.

It is thus possible to recreate, and adjust, a conventional dilution of a mixture of two different products, from two cartridges containing these substances in concentrated form, that is to say almost pure or in the form of essential oils. The embodiments of the invention described herein relate to devices of the catalytic combustion diffusion type, also called catalytic lamps. However, it is clear that the various characteristics and combinations of characteristics, in particular relating to the tanks and the intake element or elements, can be implemented on devices using other modes of diffusion and / or other products. , such as for example: - a liquid insecticide dispenser such as an electric mosquito repellent or an anti-mite, - a room diffuser using an ultrasonic mist head, - a medical or medicinal product diffuser such as an inhaler for mild (cold or flu) or chronic (asthma) respiratory conditions. Adjustable Flow Tank According to an advantageous feature, the intake element is movable between a plurality of positions and is provided with at least one intake opening thus moving with respect to at least one opening of sampling connected to at least one of the two tanks. This intake element is arranged to combine said intake opening and said sampling opening to form for the liquid from said reservoir an effective opening having a passage section whose surface varies with the position of the intake device. It can be seen that it is thus possible to regulate the flow of liquid from a reservoir. In the case of a device with a product reservoir to be diffused and a reservoir containing a dilution base, this makes it possible, for example, to modify the flow of diffused substance, for example by regulating the flow rate of the product reservoir without affecting that of the product reservoir. tank 15 basic dilution, or making different settings. In the case of a device with several tanks containing different products, it is possible to change the proportions of the different substances in the mixture that will actually be broadcast. Although it is possible to provide several intake elements, for example one for each tank, a feature of the invention provides that the displacement of the intake element displaces the intake opening with respect to at least two sampling openings connected respectively to the first reservoir and the second reservoir. These openings are arranged so as to take a flow rate of first liquid product from the first reservoir and a flow rate of at least a second liquid product from the second reservoir to jointly feed the diffusion head, in variable proportions according to the positions of said intake element. According to an advantageous feature of the invention, the device 30 comprises a plurality of reservoirs surrounding the intake element and thus forming a carousel in the middle of which a rotation of the intake element displaces at least one intake opening for selectively connect it to one or more of said reservoirs. This provides a compact architecture, allowing a device of any shape, and in particular a uniform and regular outer shape, for example cylindrical. The tanks may also all have a similar or identical shape, and thus be interchangeable within the device.

EXAMPLES OF EMBODIMENTS In a first embodiment of the invention described below, a catalytic lamp comprises a body enclosing the reservoirs, and which carries on its upper face a control plate which: is mounted rotatable on the body of the device; - Has a form of maneuver cooperating with a form of maneuver carried by the intake member to obtain a rotational adjustment of the intake member by a rotation of said platen; - carries at its center of rotation a diffusion head whose base comprises a porous element which is simply pressed by elastic means on a portion of the wick located at the upper end of the intake element, thus allowing the feed of the head in mixed liquid. Preferably, the wick and the head are pressed but not linked in tension, and do not surround each other, which allows the transmission of the liquid by limiting the heat transfer and avoids carbonizing the wick. In a second embodiment of the invention described below, a catalytic lamp comprises a body enclosing the reservoirs, and which carries on its upper face a control plate which: is mounted rotatably on the body of the device; - Has a form of maneuver cooperating with a form of maneuver carried by the intake member to obtain a rotational adjustment of the intake member by a rotation of said control plate; an eccentric part is provided with a diffusion head whose base comprises a porous element which is simply pressed by elastic means on a portion of the wick situated at the upper end of the intake element, thus allowing feeding the head with mixed liquid; - Has at least one eccentric opening allowing access to one or more tank filling orifices, for example traversed by filling channels integral with the tanks and provided with funnels at their ends; - Also carries a non-removable protection plate, movable in rotation between at least two positions relative to said control plate, provided with or forming a protective shell having at least one access opening shaped and positioned to allow the access, depending on its position, either to the filling or the catalytic head but not to both at the same time. In a preferred but not mandatory variant, the protective shell is centered on the adjustment plate, which brings compactness simplicity and visual uniformity to the device. Various embodiments of the invention are provided, integrating, according to all of their possible combinations, the various optional features set forth herein. Other features and advantages of the invention will emerge from the detailed description of an embodiment which is in no way limitative, and the appended drawings in which: FIG. 1 is a sectional and exploded representation of a catalytic lamp constituting an exemplary embodiment of the invention, implemented in the first embodiment of the invention, with a central catalytic head and a lower intermediate tank and two tanks in a carousel around an intake and supply element ; with in FIGURE lb a perspective of the intake element and a reservoir; FIGURE 2 is a sectional side view of the lamp of FIGURE 1, in a plane perpendicular to the section of FIGURE 1, in a situation after filling of the two tanks; FIGURE 3a and FIGURE 3b are views similar to FIGURE 2, in respective positions: for FIGURE 3a in a mixing embodiment, o for FIGURE 3b in a diffusion phase of the produced mixture; FIGURE 4 is a partial perspective view showing the lamp top of FIGURE 1 when the adjustment plate is removed; FIGURE 5 and FIGURE 6 are partial schematic partial non-scale representations of the liquid flow control mechanism of the lamp of FIGURE 1, for a mixture of equal parts and respectively for sampling on only one of the two tanks, o for FIGURE 5a and FIGURE 6a in section view from above at mid-height of the intake and sampling openings, and o for FIGURE 5b and FIGURE 6b in view, from inside the element of admission, of the 360 ° development of the common surface of the intake and sampling openings; FIGURE 7a and FIGURE 7b are partial diagrammatic non-scale representations of the liquid flow control mechanism, in a variation of the first gradually adjustable embodiment with constant height intake opening; FIGURE 8a and FIGURE 8b are partial non-scale schematic representations of the liquid flow control mechanism, in a variation of the first superimposed aperture adjustment embodiment; FIGURE 9a and FIGURE 9b are partial diagrammatic non-scale representations of the liquid flow control mechanism, in a variant of the first progressively-adjustable embodiment by two separate inlet openings at the same level; FIGURE 10a and FIGURE 10b are partial schematic partial non-scale representations of the liquid flow control mechanism, in a variant of the first embodiment controlled by four discrete positions; FIGURE 11, FIGURE 12, and FIGURE 13 are block diagrams of a catalytic lamp according to the first embodiment, in continuous mixed architecture variants configured: FIGS. 11 and FIGURE 12, FIG. for a complementary mixture ranging from 0% to 100% of diluted liquids, between two carousel tanks, in the off position and respectively in the operating position, o for FIGURE 13, with separate inlet element in two compartments, for a complementary mixture ranging from 0% to 100% of diluted liquids, between two carousel tanks o for FIGURE 14, with separate inlet element in two compartments plus a central dip tube, for a complementary mixture of 0% to 100% concentrated liquids between two carousel tanks, diluted with a dilution base from a third lower tank; FIGURE 15a to FIGURE 15d are partial schematic partial non-scale representations of the liquid flow control mechanism of a catalytic lamp in an alternative embodiment of the first two-tank carousel embodiment with continuous mixing and a single adjustment. , which is used in dilution control: o for FIGURE 15a in section view from above, o for FIGURE 15b as a block diagram, o for FIGURE 15c in developed from the inside in an adjustable variant progressive, o for FIGURE 15d in developed from the inside in a variant adjusted by four discrete positions; FIGURE 16a to FIGURE 16c are partial schematic partial non-scale representations of the liquid flow control mechanism of a catalyst lamp in a variation of the first embodiment with two superposed tanks with continuous mixing and a single adjustment, which is used in dilution control: o for FIGURE 16a in section view from above, o for FIGURE 16b as a block diagram, o for FIGURE 16c in developed from the inside, - FIGURES 17 and FIGURE 18 are representations, in exploded section and respectively in side section, of a catalytic lamp constituting an exemplary embodiment of the invention, implemented in the second embodiment of the invention, with a head decentralized catalysis under a protective shell and two carousel tanks around an intake and feed element dipping into a third lower tank; FIGURE 19 shows in perspective the lamp of FIGURE 17 with the protective cover disassembled for better visibility; FIGURE 20 and FIGURE 21 show the lamp of FIGURE 17 in five different positions of the protective shell, either o in the closed position, o in the filling position of one of the carousel tanks, o in the filling position of the other tank of the carousel, o in the ignition position of the catalytic head, and o in the catalytic combustion position alone. FIG. 22a and FIGURE 22b are non-scale schematic representations of an example of the first embodiment in which the intake and sampling openings are located on the lower surface of the carousel tanks, with four carousel tanks. with custom mixing and complementary adjustment between two adjacent tanks, o in the set position on the first tank alone, in cross-section, o in the set position on a mixture of equal parts of the second and third tanks, in broken cross-section. passing through the second and third tanks; FIGURE 23a and FIGURE 23b are diagrammatic representations in sectional view from above of the device of FIG. 22a and FIGURE 22b, each comprising a mixed line representing the sectional planes of these same figures. First Embodiment In FIGURE 1 to FIGURE 4 is shown more particularly an example of the first embodiment of the invention. In this example, a catalytic diffusion lamp 1 having a substantially vertical cylindrical shape comprises a cylindrical outer casing 101 mounted open upwardly and surmounted by an upper flange 103. This casing 101 contains two symmetrical reservoirs 111 and 112 around the outside. a vertical plane passing through the axis of the cylinder. These two tanks have a half-cylinder shape recessed in the center, where they surround substantially complementary to an intake element 12 substantially cylindrical. These tanks thus form a carousel in the middle of which the rotation of the intake element 12 moves at least one inlet opening 123 carried by this intake element to connect selectively to one or more of these tanks.

This intake element 12 is connected at the bottom to the two reservoirs 111 and 112. It contains a wick 124 receiving the liquid or liquids coming from the tanks to supply by capillarity the porous "stone" 130 of a diffusion head situated between centrally in the axis of the intake element. The upper end of the wick 124 is pressed against the bottom of the diffusion stone 130 by means of a slightly conical metal cup 1241 enclosing the wick and itself pushed upwards by elastic means, here constituted by a helical spring 1242 compressed between the diffusion head 130 and a shoulder 1210 from the top of the intake element 12, which thus also acts as a supply element. It should be noted that the wick 124 and the head 130 are pressed together but not linked in tension, and do not surround each other, which allows the transmission of the liquid while limiting the heat transmission and avoids to carbonize the wick.

The diffusion head is held in the center of an upper plate 13 comprising a base 131 surmounted by a ring 132 thus retaining a conical metal cup 133 and two son springs 134 surrounding the stone 130. According to the phases of use, the crown 132 has a sealing cap 141, or a perforated frame 142 protecting the stone during catalysis. The intake and supply element 12 comprises a central cylindrical hollow body 120 closed at its lower end and surrounding the wick 124. In its lower part, the body 120 has a narrowed cylindrical portion forming an intake region 121, in which one or more inlet openings 123 are cut out. This intake portion 121 is inserted in free adjustment and pivots in a sampling ring 126, which carries openings 1260 each receiving a sampling tube 1110 connected to one 111 of the tanks and whose inner opening forms a sampling opening and comes into complementary contact with the outside of the intake portion 121 of the intake element 12. The upper plate 13 is rotatably mounted on the upper flange 103 of the lamp body, which carries marks corresponding to the positions of the different mixing settings. It carries below a cylindrical extension having a 1310 non-cylindrical form of female maneuver complementary styling a form of male maneuver 125 carried by the top of the body 120 of the intake element and supply 12. The two forms of 1310 and 125 operates together to obtain a rotation of the intake member 12 by a rotation of the upper plate 13. The upper plate 13 can be removed by the user as shown in FIGURE 4, for example to replace the tanks or to access the filling holes 1119 and 1129 of the carousel tanks. These openings are normally closed by the underside of a closure washer 119 which surrounds the intake element 12. This closure washer 119 has an opening 1191 and 1192 for each filling opening 1119 and 1129 of the tanks 111 and 112 carousel. The openings of the closure washer 119 are arranged so that all the filling openings can be simultaneously closed or uncovered when it is rotated around the intake element. The tanks of the carousel can then be filled, if possible by a device limiting the handling and risks of overturning. For this purpose, it is possible to use, for example, flasks or filling cartridges provided with a spout of a size adapted to the filling openings. It is also possible to use for example an accessory having several funnels integral with each other and each provided with a conduit corresponding to a filling opening, and which are arranged between them so that they can be introduced simultaneously into a filling opening. During the rotation of the intake element 12, it is seen that the inlet opening 123 slides in rotation relative to the sampling openings 111 connected to the tanks. This inlet opening 123 has a defined contour so that its intersection with the sampling openings 1110 and 1120 can form effective openings whose passage sections S1 and S2 respectively depend on the angular position of the intake element 12 in its rotation R12. Under the carousel of the tanks 111 and 112 is a lower reservoir 113 provided with an upward opening through which the wick 124, the lower end down to the bottom of the lower reservoir. The outer wall of the lower reservoir 113 comprises one or more (here two) protuberances 1111 of a vertically elongated shape, which protrude through windows 102 of the body 101, and thus form level gauges thus making it easy to visualize the level liquid in the tank when it is made of a translucent or transparent material. The same type of level gauge is also present on the outer walls of the tanks 111, 112 of the carousel, not visible in the figure as arranged offset by a quarter turn relative to the gages of the lower tank. In this exemplary embodiment, the lower reservoir 113 acts as an intermediate reservoir. That is, it is initially empty, and receives one or more liquids from other tanks. Here, the liquids P1 and P2 from the tanks 111 and 112 of the carousel enter the intake region 121 of the intake element 12 and flow from below into the lower reservoir 113 where they mix. The lower intermediate tank 113 then contains a mixture of liquids P1 and P2 whose proportions are regulated by the ratio of the passage sections connecting the tanks 111 and 112 of the carousel with the intake element 12. The low end the wick 124 then quenched in this mixture P1 + P2, and the conduit by capillarity to the diffusion head 130, where the same mixture is then diffused. Mixing carried out by manual control According to an optional feature of this example of the first embodiment of the invention, the tubular body 120 of the intake element is held at rest upwards by elastic means, here a spring 128 which surrounds it and is disposed between the lower face of the upper plate 13 and a washer 129 resting on a shoulder 118 formed around the intake element by the inner walls of the carousel tanks. When the intake member 12 is in the up position as illustrated in FIGURE 2, the inlet opening 123 is located higher than the sampling openings 1110 and 1120 of the tanks. The sampling ring 126 completely closes the inlet opening 123 by its inner surface and completely closes the sampling openings by its external surface. The liquids P1 and P2 do not flow towards the lower tank 113. As illustrated in FIG. 3a, when the upper plate 13 is pressed, the latter compresses the intake spring 128 and presses on the top of the intake element 12. The latter moves downwards over a determined stroke to bring the inlet opening 123 at the sampling openings, thus forming effective openings of passage section S1 and S2. between them a ratio determined by the angular position of the intake element set during its rotation R12. The liquids from the carousel tanks can then flow into the lower tank and mix in these proportions.

Once the upper platen 13 is released, as shown in FIGURE 3b, the inlet spring 128 up the up with the intake element 12, and the inlet openings 123 and sampling are at again closed. The device can then be used for a long time to diffuse the mixture P1 + P2, which is in the intermediate reservoir and is brought by the wick 124 to the diffusion head 130. The use of this lower reservoir As an intermediate reservoir, it is thus possible to simply prepare a desired quantity of mixture, keeping the upper plate 13 depressed for the time necessary to form the desired quantity of mixture. The adjustment of the proportions is independent of the quantity prepared, and stays the same from one time to the other. During the preparation of the mixture, the lower position of the tank 113 avoids any risk of rising of the mixture in the carousel tanks. During the diffusion phase, which can last from a few minutes to several hours, the two tanks containing the initial products P1 and P2 are completely closed, and their content remains pure there any pollution by the mixture or the other product.

Examples of different types of adjustment openings In a particular variant of the invention, at least one inlet opening 123, 123a, 223, 323a, 423, 523 or respectively of sampling, has an outline determining a progressive variation of the H123 passage height that it provides, during the displacement R12 of the intake element 12, said gradual variation thus providing a gradual variation of the passage section S1 authorized by its conjunction with a sampling opening 1110 or respectively of admission in relation to which it moves. More particularly, the inlet opening (s) 123 can be dimensioned and arranged so that, over at least one determined range of the displacement R12 of the intake element 12: - on the one hand the first section of passage S1 formed in combination with the sampling opening 1110 of a first reservoir 111, and - secondly the second passage section S2 formed in combination with the sampling opening 1120 of a second reservoir 112, vary. in opposite directions while at the same time representing a constant total area, thus providing on said displacement range a variation of the proportions of the flow rates D1, D2 between said reservoirs without variation of the total flow rate. FIGURE 5 and FIGURE 6 further illustrate the example of FIGURE 1 through FIGURE 4. The intake portion 121 has a single elongate horizontal diamond shaped inlet opening 123, thereby having a passage height. in progressive variation from the ends to the center. Between FIGS. 5a and 6a, on the one hand, and FIG. 5b and FIG. 6b, on the other hand, is illustrated a rotation R12 of 90 ° of the intake element 12. During this rotation R12, the opening of FIG. intake 123 moves with respect to sampling apertures 1110 and 1120, the variation of the passage heights in the intake opening at the sampling openings causes a variation of the passage sections S1 and S2 controlling the passage of from the tanks respectively 111 and 112. In the situation "a", the two passage sections S1 and S2 are substantially of the same surface, and are worth substantially half of their maximum value, which is here the surface of the sampling openings . These two passage sections thus allow respective flow rates D1 and D2 from the two reservoirs 111 and 112 substantially equal to each other, and substantially each half of its maximum value. It can be seen that the rotation R12 modifies these passage sections S1 and S2 to arrive at a maximum flow rate D2 and a flow rate D1 that is substantially zero. It is thus seen that the relative provisions and the dimensioning of the sampling and intake openings are here arranged to obtain a progressive, continuous and complementary adjustment of the passage sections S1 and S2 ranging from 0% to 100% of one of the reservoirs compared to each other. Other shapes, distributions, dimensions and relative provisions of the sampling and intake openings allow different ranges of settings. FIGURE 7 to FIGURE 9 illustrate further arrangements of intake openings 723, 823 and sampling ports 7110, 71120, 8110 and 8120. In FIGURE 7a and FIGURE 7b, sampling apertures 7110 and 7120 both have a rectangular profile. horizontal of identical in their big side. The intake portion comprises an inlet opening 723 of constant height substantially over half of the periphery of the inlet portion, ie the length separating the two sampling apertures 7110 and 7120 increased by the length of the inlet portion. one of them. Thus, during a rotation R712 equal to the length of a sampling opening, the intake opening discovers a sampling opening at the same time as it closes the other, thus varying the passage sections S711 and S712 in a progressive and complementary way with a total section S711 + S712 which remains constant. Compared to the arrangement of FIGURE 5 and FIGURE 6, the rotational stroke of the intake element and the upper plate is reduced, which may allow greater freedom of design for the entire device. Separate inlet openings According to one variant, the intake part carries a plurality of distinct inlet openings each corresponding to a single sampling aperture. It is thus possible to limit the pollution of each of these tanks by the other product or products of the other tanks. In FIGURE 8a and FIGURE 8b, for example, the intake portion 121 has two separate, but non-communicating, inlet openings 1232 and 1232 corresponding to sampling apertures 1110 and 1120 at different heights. The inlet openings both have a progressive passage height, and thus discover the sampling openings in a progressive and complementary manner.

The variant illustrated in FIG. 9a and FIGURE 9b, the intake portion 121 have two distinct inlet apertures 1231 and 1232 located at the same height, respectively regulating the intake from the sampling apertures 1110 and 1112. This variant may allow for example, to limit the risks of mixing the products inside the original tanks 111 and 112. It also makes it possible to perform the same adjustment values over a smaller angular rotation range R12 than in the case of a single inlet opening 113. - 21 - Discretely adjustable inlet openings According to an optional feature of the invention, which can be implemented within the other variants proposed, the device has a plurality of elements for the admission element. discrete positions explicitly marked for the user, for example visually or mechanically, corresponding to a determined combination of at least one opening of removing at least one reservoir with a plurality of inlet openings distinct from each other, arranged to thereby provide a plurality of different intake ratio settings between the liquids from the different reservoirs. In FIGURE 10a and FIGURE 10b is illustrated such a feature. For each of the sampling openings 1110 and 1120, a plurality of inlet openings 2231, 2232 and 2233 have increasing surfaces ranging from 0% to 100% of the area of the sampling opening, for example equal to 30%, 70% and 100%. The rotation of the upper plate thus allows several values of predetermined mixtures simple to obtain for certain simple positions of adjustment. Position of the intake openings and sampling Various variants are possible for the position of the intake openings and sampling of the adjustment mechanism, without departing from the spirit of the invention. It should be noted that the different types of intake openings can be combined together within the same embodiment.

In particular, the inlet openings may also be formed by one or more orifices 123 (or 1231, 1232) open in a wall of the intake element 12 of a cylindrical shape, as in the examples described in FIG. in FIGURE 20, but also of a conical shape, of the same axis as its rotation R12 and in complementary contact with a wall carrying the sampling aperture 1110 of at least one reservoir 111, 112. As illustrated in FIGURE 21 they may also be formed by an open orifice in a wall of the intake element of a plane shape perpendicular to the axis of its rotation and in complementary contact with a wall carrying the sampling aperture d. at least one tank.

As described above, the inlet opening (s) 123 may be formed by an open orifice in a wall 121 of the intake element 12, of a cylindrical or conical shape having the same axis as its rotation R12. and in complementary contact with a wall 126 carrying the sampling aperture 1110 and 1120 of at least one reservoir 111 or 112.

As illustrated in FIGURE 22 and FIGURE 23, one or more inlet openings may also be formed by one or more openings in a wall of the intake element, of a planar shape perpendicular to the its rotation and in complementary contact with a wall carrying the sampling opening of at least one reservoir.

The invention may also provide for combining these two types of intake openings in the same device. In the example illustrated here, the intake element 62 is formed by the upper wall of the intermediate mixing tank 615, which is located beneath several different tanks of product, here four tanks 611, 612, 613 and 614 containing respectively four different products P1, P2, P3 and P4. The upper wall of the intermediate reservoir 615 is horizontal and flat, and forms an intake element 62 carrying an inlet opening 623 substantially diamond-shaped wound on a circle, substantially a crescent. This wall 62 is in plane complementary contact, via a control washer 65, with four sampling openings 6110, 6120, 6130 and 6140 carried respectively by the bottom wall of the four tanks 611, 612, 613 and 614 of products.

All four tanks 611, 612, 613 and 614 of products can be moved in rotation R around a vertical axis A6 relative to the body 601, by the operation of an upper plate 63 which covers and drives these four tanks. The intermediate reservoir 615 is rotationally integral with the body 601. The inlet opening 623 of its upper wall 62 is thus rotated around A6 with respect to the sampling openings 6110, 6120, 6130 and 6140 of the tanks 611, 612, 613 and 614 of products. In the same way as for the other examples, the displacement of the admission opening 623 in front of the sampling openings opens or closes one or more passage sections: S1 for the position of FIG. 22a and FIG. 23a, or S2 and S3 for the mixing position of FIGURE 22b and FIGURE 23b. This movement allows the corresponding products P1, or respectively P2 and P3, to flow into the intermediate tank 615 and mix there where appropriate. As seen in the figures, the upper plate 63 which is linked to the product tanks carries a mark for the position of each tank. These marks are thus moved in front of a graduation carried by a portion rotatably connected to the inlet opening 623, here the upper part 603 of the body 601. This graduation extends between on the one hand a mark ("1") indicating the part of the inlet opening giving a maximum flow, and here exclusive to a single tank, and secondly one or more marks ("3/4", "1/2" and "1/4" ) indicating different parts of the intake opening that give a reduced flow rate and up to zero flow ("0"). In FIGURE 22a and FIGURE 23a, the "1" mark is opposite the "P1" mark, indicating that the flow is entirely composed of "P1" product from the first tank 611.

In FIGURE 22b and FIGURE 23b, the marks "P2" and "P3" are each opposite a "1/2" mark, indicating that the flow obtained is a mixture of each of the products P2 and P3 coming from the second and third tanks 612 and 613. The mixing phase is controlled by a maneuver of the control washer 65, rotated about the same axis A6 relative to the product tanks 611, 612, 613 and 614. This control washer has an opening of command 651, 652, 653 and 654 for each of the sampling openings 6110, 6120, 6130 and 6140 of these product tanks. This control washer 65 is held at rest by elastic means, for example a central spring, in a position where the control openings are not opposite the sampling openings, and thus prevents the products P1 to P4 from flow is. When maneuvering this control washer 65, for example 30 ° to a stop or a mark (not shown), the control openings come opposite the sampling openings (here shown slightly offset) and thus allow flow of those products for which the inlet opening 623 opens a passage section.

Alternatively, it is also possible to provide a control washer at two rest positions, one with flow and the other without. It is thus possible first to adjust the choice of products and the proportion of the mixture by positioning the upper plate 63, then actuate the control washer 65 to obtain a certain amount of this mixture in the intermediate tank 615. This mixture is then brought together at the diffusion head 630 by the wick 624 which goes down to the bottom of the intermediate reservoir. In each of FIGS. 22a and 22b, the rectangular symbol with a blackened portion represents the flow control range for each of the tanks, and the horizontal arrow facing it represents the position currently set for the figure in question.

Continuous mixing architectures The invention allows different architectural variants, for example, in which mixing is continuous throughout the duration of the diffusion phase. This type of architecture with continuous mixing limits the number of maneuvers of the user. It allows especially to prepare the mixture as and when needed, so to be able to broadcast a new mixture with a different setting or different products without waiting to have completely consumed a mixture prepared in advance. These types of continuous mixing architectures can be combined with the various control mechanism variants described above, which will not be described again. FIG. 11 to FIG. 14 illustrates examples of continuous mixing architectures that can use the different types of complementary flow rate settings described above. In these architectures, the passage sections are dimensioned to admit a total flow rate lower than the flow rate diffused by the diffusion head, and the intake element is movable between at least: a first rest position, called a stop position; , in which the diffusion head is deactivated, for example by lack of air, and the intake element closes the sampling apertures 111, 1120; and a second rest position, called the operating position, in which the intake element connects said sampling openings with at least one inlet opening 123 allowing continuous intake of the collected liquids P1, P2, which are then conveyed conjointly to the diffusion head 130. In FIGURE 11 to FIGURE 14, the inlet member 32 moves vertically, without losing its angular adjustment position. In this example, the deactivation of the diffusion head 130 is obtained by a loss of contact between the head 130 and the top of the wick 124.

According to a variant of the invention illustrated in FIGURE 11 and FIGURE 12, the intake element 32 comprises a mixing region 321 connected with the at least one inlet opening 123 for receiving the liquids coming from at least two reservoirs 112, 112 and jointly supplying the diffusion head 130. This provides a simpler and more compact arrangement, which can dispense with intermediate reservoir. In this variant, two products P1 and P2 of prediluted type are mixed from two tanks 111 and 112. The adjustment mechanism, for example of the type described above, allows a simple and direct adjustment by rotation of the upper plate 13, to selectively switch from one product P1 to the other P2, gradually and with all the desired intermediate settings. The various settings are here schematically illustrated by the two vertical rectangles horizontally illustrating the evolution of the flow with respect to the adjustment range illustrated in the vertical direction. As long as the upper plate 13 is not pressed, resilient means hold it in the up position (FIGURE 11) so as to keep the bottom of the diffusion head 130 separated by a certain distance E124 from the top of the wick 124 , thus preventing the arrival of the mixture P1 + P2 to the diffusion head, which prevents the ignition of the lamp. These elastic means here are a helical spring 1242 compressed between the base of the diffusion head 130 and a shoulder on the outside of a ring 329 encloses the wick and bears downward on a shoulder 3210 of the element In this high position, the intake element 32 is held in the high position by elastic means, here the spring 3242 which rests on the inner shoulder 118 of the carousel tanks. In this high position of the intake element 32, the inlet opening 123 is kept higher than the sampling openings 1110 and 1120, which are closed off by the outer wall of the tube 321 of the intake element. 32. When pressing the upper plate 13 to bring 13M down (FIGURE 12), the diffusion head goes down and its base is pressed against the top of the wick 124, which allows the transmission of liquid between both. In the same movement 13M, the lower face of the upper plate 13 presses an outer shoulder 327 of the intake element 32 to bring it into a low position where the inlet opening is connected to the sampling openings. This allows the liquids P1, P2 to enter the intake element 32, where they mix and are absorbed by the wick to jointly feed the diffusion head 130.

The upper plate 130 is then locked in the lower position by means not shown here, for example by a ratchet mechanism similar to ball-bearing pens with retractable lead, or by other mechanical means of a known type, such as a latch. Thus, it can be seen that the liquids can only come out of the tanks when the diffusion head is capable of diffusing the product mixture, and only at a flow rate less than or similar to that of the diffusion head and the wick. There is no risk that the tanks empty one into the other. In FIGURE 13 is illustrated a variant with complementary adjustment with continuous mixing and separate inlet openings 4231, 4232. In this variant, the interior of the intake element 42 is separated into several compartments 4211 and 4212 respectively, for example one for each tank 411, 412 of the carousel, by a central partition 420. Each compartment receives only one only products to be mixed, as well as a wick 4241, respectively 4242, which conveys this liquid to the diffusion head. These two wicks are here constituted by the two halves of a single wick folded in two. Each of these compartments is fed by a separate inlet opening 4231 and 4232, respectively, which are dimensioned so that the admitted flow rate is lower than the flow rate of liquid that can be conveyed to said diffusing head 130 and diffused by it. Preferably, the central partition 420 rises at least up to the level of the maximum possible level in the tanks which avoids any risk of overflow, for example in the case of poor sealing in the off position or in case of excessively large sample flow rate. relative to the flow rate of the locks and / or the diffusion head. This further limits the risk of pollution between different reservoirs. Examples of Dilution Architectures FIGURE 14 illustrates an example of a constant-dilution, adjustable mixing architecture, shown here in a continuous-mix version, that can use between the concentrate tanks the different types of complementary flow settings described above. . Two tanks 211 and 212 each contain a product in concentrated form C1 and C2, intended to be diluted with a dilution base B3 contained in a lower tank 213. The intake and supply element 22 comprises a housing intake closed at the bottom, for example separated into two half-cylindrical compartments 2211 and 2212 each giving onto one of the inlet openings, respectively 2231 and 2232. This inlet housing each contains a wick 2241 and 2242, which absorb the concentrates C1 and C2 at the inlet openings, and jointly feed the diffusion head 130 at a flow Dl and D2, thus forming a mixture C1 + C2 in the proportions determined by the rotation R12 of the adjustment mechanism.

The intake housing further surrounds a central tube 220 which is open downwardly and passes a central wick 2240 which descends to the bottom of the lower tank 213 to take the dilution base B3. This central wick 2240 absorbs a constant flow D3 of the dilution base B3, which it supplies the diffusion head 130 together with the products P1 and P2 containing the substance to be diffused. The example described here in FIGURE 14 concerns two tanks 211 and 213 of different concentrates C1 and C2, to be mixed together and whose mixture is diluted with a dilution base B3. This architecture can, however, also be applied to a single concentrated product diluted with a dilution base, or to more than two concentrated products mixed together and diluted with a dilution base, by varying the number of the intake housings 2211 and 2212 as well as than the corresponding wicks and inlet openings. Other architectures are illustrated in FIGURE 15 and FIGURE 16 with a setting mechanism for modifying the concentration of substance to be diffused for a substance from a given reservoir, by adjusting the concentrate flow rate with respect to a constant flow rate of a dilution base, or vice versa. FIG. 15a to FIG. 15d illustrates such a continuous mixing dilution control architecture, using two carousel tanks 311 and 312 delivering a concentrated or prediluted product C1 for one and a neutral or less concentrated dilution base B2 for the other, e.g. in continuous mixing operation as in FIGURE 11. FIGURE 15c illustrates a configuration of the adjustment mechanism using a stepless adjustment with a stepless intake opening 312 moved in front of the sampling aperture 3110 of concentrate C1 and an inlet opening 311 in the form of an oblong hole constantly discovering the sampling aperture 3120 of the dilution base B2. FIGURE 15d illustrates a configuration of the adjustment mechanism similar to that of FIGURE 15c, but using a gradual discrete adjustment with a plurality of distinct inlet openings 3231, 3232 and 3233, with increasing surfaces, moved in front of the opening of FIG. concentrate sample 3110. It should be noted that the dilution architecture of FIG. 15a in FIG. 15d can also be combined with a controlled mixing architecture, such as those illustrated in FIGURES 1 to FIGURE 13 and FIGURE 17 in FIGURE 21, FIG. by adding an intermediate mixing tank positioned below the Cl and B2 base tanks. FIGURE 16a to FIGURE 16c also illustrate a continuous mixing dilution control architecture, using a rectangular section toroidal tank 411 over a cylinder-shaped reservoir 413 delivering a concentrated or prediluted product C1 for the one and one B2 dilution base neutral or less concentrated for the other. The intake element has a single inlet opening 223 of progressive height and moving in front of a circular sampling opening 2110 to provide a flow Dl adjustable substance to diffuse. The wick 4240 dipped into the lower reservoir 413 and absorbs a constant flow D2 of dilution base B2, which mixes with the adjustable flow Dl of product containing the substance to be diffused, for example in a continuous mixing operation as in FIG. 14.

Second Embodiment FIG. 17 to FIG. 21 illustrates an example of the second embodiment, which will only be described in its differences with respect to the first embodiment. In particular, the different types of adjustment mechanisms described in connection with the first embodiment can also be combined with the features of the second embodiment. In this example, a catalytic diffusion lamp of substantially vertical cylindrical shape comprises a cylindrical outer casing 501. This casing 501 encloses two symmetrical reservoirs 511 and 512 around a vertical plane passing through the axis of the cylinder and surmounting a lower tank 513. These two tanks 511 and 512 surround an essentially cylindrical inlet element 52. These tanks thus form a carousel in the middle of which the rotation of the intake member 52 carries and moves at least one inlet opening 523 to connect selectively to one or more of these tanks. This intake element 52 is connected at the bottom to the two reservoirs 511 and 512. It contains a wick 524 receiving the liquid or liquids coming from the reservoirs to supply by capillarity the porous "stone" 530 of a diffusion head located central way in the axis of the intake element, which also plays a role of supply element. The diffusion head is fixed on an eccentric portion of an upper adjusting plate 53 comprising a base 531 surmounted by a cover 532 fixed on the top of the body 501. The upper end of the wick 524 passes through the center of the base 531 then is bent at 90 ° and simply pressed against the bottom of the diffusion stone 530 by the same base 531, itself pushed upwards by the effect of resilient means constituted by a compressed 5242 coil spring, surrounding the intake and supply element 12 and supported on a resilient circlip 5241 fixed on the walls of the tanks facing the intake element 52. The cover 532 has an opening 5230 eccentric circular arc traversed by filling ducts 5119 and 5129 integral with the tanks and forming a funnel at their end. This opening 5320 is dimensioned to allow the rotation of the plate 53 for the purpose of adjusting the mixture by rotation of the or the inlet openings 523. The lamp also carries a protective plate 54 non-removable in normal use, rotatable between several positions relative to the control plate 53. This protection plate carries a protective shell 540 substantially half-toroidal shape around a central portion 549. This protective shell 540 has an access opening 541 shaped and positioned to allow access, depending on its position, either to the filling ports 5119 and 5129 or to the catalyst head 530 but not both at the same time. In the central part 549 of the half-torus of the protective shell 540, the protection plate 540 furthermore carries an off-center opening which comes in conjunction with an opening carried by the adjustment plate 53 when the access opening 541 is in position. filling position, thus allowing filling of the lower tank 513 through the base 531 of the adjustment plate and along the wick 524. The rotation of this protective shell 540 with respect to the adjustment plate 53 thus allows access the various filling holes while the diffusion head is completely protected and can not be lit nor continue to burn. This produces a catalytic lamp with good safety capabilities combined with new adjustment and / or mixing functions, and a compact appearance without removable parts.

Other embodiments may of course be implemented, as defined in the claims, without departing from the scope of the invention.

Claims (17)

REVENDICATIONS1. Device for diffusing a liquid product by natural convection in the air, comprising at least a first reservoir (111, 511) intended to contain a first liquid (P1, Cl) containing a first substance to diffuse and supplying by capillarity at least a diffusion head (130, 530), characterized in that it comprises at least a second reservoir (112, 512) intended to contain a second liquid (P2, C2, B2, B3), as well as at least one element inlet (12, 22, 32, 42, 523 and 524) arranged to be connectable to both the first and second tanks to receive the first and second liquid and simultaneously and simultaneously supply said diffusion head . 2. Device according to the preceding claim, characterized in that it comprises at least one of the following combinations: - a reservoir (111) containing a concentrated product (C1) or diluted (P1) and a reservoir (112) containing a base of dilution (B2); or a reservoir (111) containing a diluted product (P1) and a reservoir (112) containing a concentrated or diluted product (C2, P2); or two reservoirs (111, 112) each containing a concentrated (Cl, C2) or diluted product (P1, P2) and a reservoir (413) containing a dilution base (B3). 25 3. Device according to any one of the preceding claims, characterized in that the intake element (12, 523 and 524) is movable between a plurality of positions and is provided with at least one inlet opening (123). 523) thereby moving with respect to at least one sampling aperture (1110, 1120, 5111) connected to at least one of the two reservoirs, so as to combine said intake opening and said sample aperture to form for the liquid from said reservoir an effective opening having a passage section (Si, S2) whose surface varies according to the position of the inlet device (12, 523 and 524). 2955497 - 33 - 4. Device according to any one of the preceding claims, characterized in that the displacement of the intake element displaces the inlet opening with respect to at least two sampling apertures (1110 or 5111, 1120 ) respectively connected to the first reservoir (111, 511) and the second reservoir (112, 512), so as to take a flow (D1) of first liquid product from the first reservoir and a flow (D2) of at least one second liquid product from the second reservoir to jointly feed the diffusion head 10 (130, 530), in varying proportions according to the positions of said intake member (12, 22, 32, 42, 523 and 524). 5. Device according to any one of the preceding claims, characterized in that it comprises a plurality of reservoirs (111 or 511, 112 or 512) surrounding the intake element (12, 22, 32, 42, 523). and 524) and thereby forming a carousel in which a rotation of the intake member (12, 523 and 524) displaces at least one inlet opening (123, 523) to selectively connect it to one or more of said reservoirs . 6. Device according to the preceding claim, characterized in that at least one inlet opening is formed - either by an orifice (123) open in a wall of the intake element (12) of a cylindrical shape or conical with the same axis as its rotation and in complementary contact with a wall carrying the sampling opening (1110) of at least one reservoir (111); either by an orifice open in a wall of the intake element of a planar shape perpendicular to the axis of its rotation and in complementary contact with a wall carrying the sampling opening of at least one reservoir; - a combination of these elements. 7. Device according to any one of the preceding claims, characterized in that the intake element (12, 523 and 524) - 34- - on the one hand contains at least one feed wick (124, 524) dipping into a mixture of the different liquids from the different reservoirs (111 or 511, 112 or 512) and kept in contact with the diffusion head (130, 530); and - on the other hand is movable (R12) with respect to the tanks and carries at least one inlet opening (123, 2231, 523) which is thus displaced relative to at least one sampling opening made in the wall of at least one reservoir (111, 511), thus modifying at least one liquid passage section (Si) and consequently modifying the proportions of the sampling flow rates (D1, D2) between the reservoirs. 8. Device according to claim 7, characterized in that it has for the admission element (12) a plurality of discrete positions explicitly marked for the user, corresponding to a determined combination of at least one sampling aperture (1110) of at least one reservoir (111) with a plurality of distinctly separate inlet openings (1231, 1232, 1233) arranged to thereby provide a plurality of different intake ratio settings between the liquids from the different reservoirs (111, 112). 9. Device according to any one of claims 7 or 8, characterized in that at least one inlet opening (123, 123a, 223, 323a, 4231 and 4232, 523) or sampling, has a defining contour. a progressive variation of the passage height (H123) which it provides, during the displacement (R12) of the intake element (12), said progressive variation thereby providing a gradual variation of the passage section (Si) allowed by its conjunction with a sampling aperture (1110) or intake opening with respect to which it moves. 10. Device according to the preceding claim, characterized in that at least the inlet opening or openings are dimensioned and arranged so that, on at least a determined range of the displacement (R12) of the intake element. (12): - on the one hand the first passage section (Si) formed in combination with the sampling opening (1110) of a first reservoir (111), and - on the other hand the second passage section (S2) formed in combination with the sampling aperture (1120) of a second reservoir (112), vary in opposite directions while at the same time representing a constant total area, thereby providing a variation of the proportions over said range of motion flow rates (D1, D2) between said reservoirs without variation of the total flow rate. 11. Device according to any one of the preceding claims, characterized in that it further comprises at least one intermediate reservoir (113, 513) located lower than the sampling openings (1110, 1120) of the tanks, wherein intake member (12, 523 and 524) conducts by gravity the liquids (P1, P2) from at least two reservoirs (111, 112), and from which at least one supply element (12, 32, 523 and 524) brings the mixture (P1 + P2) of said liquids to the diffusion head (130, 530). 12. Device according to claim 11, characterized in that the intake element is movable between at least one rest position in which it closes the sampling openings (1110, 1120) and a temporary mixing position in which it connects. said sampling openings with at least one inlet opening (123) thus allowing the flow of the withdrawn liquids (P1, P2) to the intermediate reservoir (113). 13. Device according to any one of claims 1 to 11, characterized in that the different combinations of the inlet openings (123, 4231, 4232) and sampling are sized to admit a total flow less than the flow diffused by the head of diffusion, and the admission element (32, 42) is movable between at least: - a first rest position (13A), called the stop position, in which the diffusion head is deactivated and the element d inlet (32, 42) closes the sampling apertures (1110, 1120); and- a second rest position (13M), called the operating position, in which the intake element connects said sampling openings with at least one inlet opening (123, 4231, 4232) allowing admission continuous withdrawn liquids (Pi, P2), which are then conveyed jointly to the diffusion head (130). 14. Device according to the preceding claim, characterized in that the intake element (32) further comprises a mixing region connected with the at least one inlet opening (123) for receiving the liquids from least two reservoirs (112) and jointly supplying the diffusion head (130). 15. Device according to any one of claims 13 or 14, characterized in that the intake element (42) comprises a plurality of compartments (4211) sealed between them at least up to the height of the maximum level of the reservoirs. (411), in each of which is arranged a wick (4241, 4242) bringing the liquid (P1, P2) to the diffusion head (130), each of said compartments being fed by an inlet opening (4231, 4232 ) dimensioned so that the admitted flow rate is less than the liquid flow rate that can be conveyed to and distributed by said diffusion head. 16. Device according to any one of the preceding claims, of the catalytic combustion diffusion type, characterized in that it comprises a body (101) enclosing the reservoirs (111, 112) and carrying on its upper face a control plate (13, 131) - which is mounted rotatably (R12) on the body of the device; - Has a form of maneuver (1310) cooperating with a form of maneuver (125) carried by the intake member (12) to obtain a rotational adjustment of the intake member by a rotation of said platen; - carries at its center of rotation a diffusion head (130) whose base comprises a porous element which is simply pressed by elastic means (1242) on a portion of the wick (124) at the upper end of the intake element, thereby allowing the feed of the mixed liquid head. 17. Device according to any one of the preceding claims, of the catalytic combustion diffusion type, characterized in that it comprises a body (501) enclosing the reservoirs (511, 512) and carrying on its upper face a control plate (531 and 532) - which is mounted rotatably on the body of the device; - Has a form of maneuver cooperating with a form of maneuver (525) carried by the intake member (523 and 524) to obtain a rotational adjustment of the intake member by a rotation of said control plate; - door in an eccentric part a diffusion head (530) whose base comprises a porous element which is simply pressed by elastic means (5242) on a part of the wick (524) located at the upper end of the element intake, thereby allowing the feed of the mixed liquid head; has at least one eccentric opening (5320) allowing access to one or more filling orifices (5119, 5129) of the reservoirs (511, 512); - furthermore carries a non-removable protection plate (54) rotatable between at least two positions relative to said adjustment plate (531 and 532), provided with or forming a protective shell (540) having at least one access opening (541) shaped and positioned to allow access, depending on its position, either to the filling ports (5119, 5129) or to the catalytic head (530) but not to both at the same time.