EP1603683A1 - Nebulisation venturi and device comprising the same - Google Patents

Nebulisation venturi and device comprising the same

Info

Publication number
EP1603683A1
EP1603683A1 EP04719461A EP04719461A EP1603683A1 EP 1603683 A1 EP1603683 A1 EP 1603683A1 EP 04719461 A EP04719461 A EP 04719461A EP 04719461 A EP04719461 A EP 04719461A EP 1603683 A1 EP1603683 A1 EP 1603683A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
liquid
nebulization
air
duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04719461A
Other languages
German (de)
French (fr)
Other versions
EP1603683B1 (en
Inventor
Karim Benalikhoudja
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prolitec Inc
Original Assignee
Prolitec SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prolitec SA filed Critical Prolitec SA
Publication of EP1603683A1 publication Critical patent/EP1603683A1/en
Application granted granted Critical
Publication of EP1603683B1 publication Critical patent/EP1603683B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0869—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the liquid or other fluent material being sucked or aspirated from an outlet orifice by another fluid, e.g. a gas, coming from another outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0012—Apparatus for achieving spraying before discharge from the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device

Definitions

  • the present invention relates to a nebulization nozzle and a device comprising it. It applies, in particular, to devices for diffusing liquids, for example for the diffusion of perfumes, liquid fuels, etc.
  • the first object of the present invention is to '' obtain fine particles of liquid dispersed in the air
  • nebulization nozzles in which a pressurized air jet sucks, by Venturi effect, a liquid to be sprayed and produces a diffusion of this liquid in the form of liquid particles
  • a pressurized air jet sucks, by Venturi effect
  • a liquid to be sprayed and produces a diffusion of this liquid in the form of liquid particles
  • Each of these nozzles is produced by machining one or more metal parts constituting the body of the nozzle
  • These nozzles have manufacturing dispersions such that the orientation of the flow of nebulized liquid particles and the angle of diffusion of the nebulized liquid particles are not identical for the different nozzles.
  • a nebulization nozzle comprising a liquid supply duct and a pressurized air inlet duct, the two ducts each having at least one nozzle opening towards a nebulization zone in which the pressurized air coming from the air inlet duct nebulizes the liquid coming from the liquid supply duct, characterized in that it comprises a means of adjustment of the relative position of the nozzle of the liquid supply duct by i addition to the nozzle of the pressurized air inlet duct Thanks to these arrangements, good reproducibility of the production is obtained because the adjustment of the position of the nozzle of the liquid supply conduit makes it possible to compensate, at least partially, for manufacturing dispersions and to adapt the flow of nebulized liquid particles to each use
  • the adjustment means is adapted to adjust at least the longitudinal position of the liquid inlet nozzle, along the axis of the liquid supply duct.
  • the liquid inlet nozzle has no symmetry of revolution, with respect to the axis of the liquid supply duct and the adjustment means is adapted to adjust at least the angular position of the '' liquid inlet nozzle, relative to the axis of the liquid supply conduit Thanks to these provisions, the rotation of this conduit allows to vary the operation of the nozzle, the efficiency of the nozzle and the size of the nebulized particles
  • the nozzle comprises a free air intake duct having a nozzle in the nebulization zone and an opening to the open air
  • the quantity of air to be injected is reduced and the operation of the nozzle is thus more economical.
  • the inventor has discovered that, in addition to the air injected by the nozzle of the inlet duct of air, air coming from the free air intake duct participated in the nebulization of the liquid or at least, increased in a particularly significant way, the flow rate of the nebulizer
  • the nozzle object of the present invention can therefore operate with a small compressor, low power consumption and providing a small flow of air under pressure, this air flow being supplemented by the additional air flow from the free air intake duct
  • the nozzle has a conical flare downstream of the nebulization zone
  • the present invention also relates to a nebulization device comprising a nozzle as succinctly set out above.
  • the device further comprises a diaphragm placed at the outlet from the nebulization zone and adapted to retain the nebulized liquid particles located in the lateral parts of the flow of particles leaving the nebulization zone.
  • the nozzle comprises an air suction duct having a nozzle in the nebulization zone and the device comprises, at another opening of the air suction duct, a vacuum sensor and a means for processing a signal from said sensor and representative of the vacuum inside the suction duct
  • the vacuum sensor completely closes the air intake duct, but as a variant the obturation can only be partial, the body of the pressure sensor then creating in this case a loss of more or less heavy load
  • the vacuum sensor makes it possible to determine the absence of liquid at the nozzle of the liquid supply pipe which is in the nebulization zone. Indeed, the inventor has discovered that, when there is no longer any liquid in this nozzle, the value of the vacuum sensed by the sensor is different from the vacuum value when said nozzle contains liquid to be nebulized It is observed that the air suction duct and the free air intake duct succinctly described above can be confused
  • the signal processing means can then generate an alarm, audible, visual or transmitted remotely on wired or non-wired support and / or cause the power supply to an air compressor supplying pressurized air to stop. at the nozzle
  • the liquid suction duct also has an opening to the open air.
  • the liquid suction duct has the advantages of the free air inlet duct, briefly described above. , the quantity of air to be injected is reduced and the operation of the nozzle is thus more economical
  • FIG. 1 shows, in section, a nozzle according to a first particular embodiment of a first aspect of the present invention
  • Figure 1a shows on an enlarged scale of the details of Figure 1
  • Figure 2 shows, in section, a nozzle according to a second particular embodiment of a first aspect of the present invention
  • FIG. 3 represents, in section, a nozzle according to a third particular embodiment of a first aspect of the present invention
  • the figure 4 shows, in section, a nozzle according to a fourth particular embodiment of a first aspect of the present invention
  • FIG. 5 represents, in cut perspective, a nozzle according to another particular embodiment of the first aspect of the present invention
  • FIGS. 6 and 7 represent, in section, a particular embodiment of a nebulization device according to another aspect of the present invention.
  • FIG. 8 is a detailed view of FIG. 6,
  • FIG. 9 represents a nebulization device comprising alarm generation means
  • FIG. 10 schematically represents a flow diagram of the operation of a nebulization device, according to a particular embodiment of a method which is the subject of an aspect of the present invention
  • FIG. 11 schematically represents a shutter adaptable to the embodiments illustrated in FIGS. 6 to 9, and
  • FIG. 12 schematically represents a variant form of nozzle for the liquid supply duct which can be used in each of the embodiments of the present invention
  • FIGS. 13 and 14 are perspective views of an open box (fig 13) and closed (fig 14) intended to receive the device according to the invention.
  • a nozzle 61 to 64 each comprising a nozzle body, an air inlet duct 10, a supply duct for liquid to be nebulized 20, a nebulization zone 30 in which there is a nozzle 15 of the air inlet duct 10 and a nozzle 25 of the liquid supply duct 20, a free air duct 40 having a nozzle 45 in the nebulization zone 30, the nebulization zone being formed in the nozzle body and the various conduits penetrating into said body, more precisely these said conduits being engaged in holes made in the nozzle body, an appropriate seal being formed between the cylindrical external faces of the conduits and the cylindrical faces of the corresponding holes It can be seen that the conduit 20 penetrates into the nebulization zone 30 which is formed by a cylindrical chamber.
  • the conduit 20 can be formed of a containing part and of a contained part mounted in the containing part according to an adjustment of the tight or slightly tight type, the nozzle 25 being formed at the end of the contained part.
  • the type of adjustment can allow the sliding of the part contained in the containing part or prohibit it.
  • the nozzle 45 is in a geometric plane perpendicular to the longitudinal axis of the conduit 40 and that the nozzle 15 is arranged in a geometric plane perpendicular to the longitudinal axis of the conduit 10. It can also be seen that the longitudinal axes of the conduits 10, 20 and 40 are intersecting with each other, that the longitudinal axis of the conduit 10 is perpendicular to the longitudinal axes of the conduits 40 and 20. It can also be seen that the conduits 40 and 20 are axially aligned .
  • the air intake duct 10 is connected to a compressor (FIG. 9) which supplies it with pressurized air, for example between one and ten times the atmospheric pressure.
  • the nebulization liquid supply pipe 20 is connected, at one end, to a tank for spraying liquid (FIGS. 6, 7 and 9)
  • the nozzle 15 of the supply supply pipe air 10 and the nozzle 25 of the liquid supply conduit 20 are positioned respectively since, by the Venturi effect, the liquid is sucked into the nebulization zone 30 where the flow of an outgoing from the nozzle 15 causes the generation of a flow of nebulized liquid particles, directed towards an outlet 50 of the nebulization zone 30, in known manner
  • the nozzle 61 to 64 comprises a means of adjusting 70 of the position of the nozzle 25 of the liquid supply conduit 20
  • the adjustment can be made by longitudinal sliding and / or rotation of the liquid supply conduit 20 in the nozzle 61 to 64
  • the liquid supply conduit may have a threaded section and the bore of the nozzle body intended to receive said conduit will be tapped, the thread of the conduit cooperating in this case with the tapping of the bore
  • the axial displacement of the conduit is inseparable from its rotation.
  • the liquid suction duct 20 and the corresponding bore are smooth, which allows the longitudinal adjustment of the duct independently of its rotation adjustment.
  • the adjustment of the position of the nozzle 25, by using the adjustment means 70, makes it possible to vary the operating parameters of the nozzle 61 to 64, to compensate, at least partially, for the manufacturing dispersions and to adapt the flow of liquid particles nebulized at each use
  • the nozzles 15 and 25 touch each other, to the thickness near the conduit 25
  • the nozzle 25 is distant from the nozzle 15 by a distance of the same order of magnitude as the diameter of the nozzle 25, that is to say between half and three times this diameter
  • FIG. 3 the same elements are observed as in FIG. 2, to which is added a conical flaring 75 axially extending the nebulization zone
  • FIG. 4 the same elements are observed as in FIG. 3, to which is added an extension of the conical flare 75 in the form of a cylindrical chamber 80 acting as a diaphragm, that is to say laterally retaining the flow of nebulized liquid particles.
  • the largest particles which are generally located in the lateral parts of this flow, are deposited on the cylindrical lateral surface of the chamber 80 and flow under the effect of gravity, to be recovered either in the nebulization zone , either in the reservoir of liquid to be nebulized (see FIGS. 6 to 8)
  • the nozzles 25 and 45 are arranged in parallel geometric planes, and that the nozzle 25 is in a geometric plane perpendicular to the longitudinal axis of the conduit 20, while in FIG.
  • the liquid inlet nozzle 25 does not exhibit symmetry of revolution, with respect to the axis of the liquid supply conduit: the plane of the nozzle 25 has, relative to the longitudinal axis of the conduit 25, an angle different from 90 degrees.
  • the absence of symmetry of revolution results in a non-circular shape of the conduit 20
  • the adjustment means 70 is adapted to adjust at least the angular position of the liquid inlet nozzle 25, relative to the axis of the liquid supply duct 20
  • the rotation of this duct 20 makes it possible to vary the operation of the nozzle 64
  • the means 70 for adjusting the position of the nozzle 25 allows, in addition, an adjustment of the distance between this nozzle 25 and the nozzle 15 along the axis of the nozzle 15, an adjustment of the distance between this nozzle 25 and the axis of the nozzle 15 and / or an adjustment of the angle between the axes of the nozzles 15 and 25, according to mechanical means known per se
  • FIG. 5 shows a nozzle 65 comprising an air inlet duct 10, a cylindrical duct 85 for supplying liquid to be nebulized on one side and for supplying free air on the other side, a nebulization zone 30 in which there is a nozzle 15 of the duct air inlet 10 and two openings 86 and 87 of the duct 85
  • the duct 85 is adapted to slide in a cylindrical bore made in the body of the nozzle 65
  • the adjustment means 70 constitutes by this bore, allows the conduit 85 to slide as well in rotation relative to its axis as in translation along its axis, which makes it possible to vary the position of the openings 86 and 87 relative to the nozzle 15 and therefore constitutes two parameters for adjusting the operation of the nozzle 65 Outside the openings 86 and 87
  • the duct 85 has at one of its ends an opening to the open air and at the other end an opening in a tank of liquid to be nebulized
  • the openings 86 and 87 are circular and have diameters substantially equal to the diameter of the nozzle 15 They are placed symmetrically with respect to the longitudinal axis of the conduit 85 They are therefore diametrically opposite
  • a conduit for supplying liquid to be nebulized 120 consists of a hollow rod 121 immersed in the liquid contained in the tank 100 and a secondary conduit 122 inserts in a nozzle 160 said secondary conduit being in communication relation with conduit 120
  • the nozzle 160 rests on the rim of the container by means of a centering collar 161 independent or rooted in the nozzle body
  • a tamper-evident ring 162 is positioned around the upper part of the container and comes by a locking collar 163, which it presents in the upper part, bearing against the centering flange 161 the nozzle 160 is covered with a cap 164 in which are formed an air inlet duct 110a and an outlet duct for the nebulisat 195
  • the air inlet duct 110a is advantageously extended by a nozzle 110b for tight connection to a source of pressurized air, for example the outlet of compressed air from a compressor.
  • This connector nozzle 110b can be vertical as shown and extend either downwards or upwards but said endpiece can also occupy a horizontal position
  • the cap 164 is fixed to the centering collar 161 by screws and overlaps the locking collar 163 which the tamper-evident ring has 162
  • Each of the screws is engaged in a through hole in the collar 161 and in a practical blind tapping in the cover 164 Due to this arrangement, the screw heads are in the internal volume of the tank or facing the latter and therefore are inaccessible.
  • This device can then be for single use and disposable after exhaustion of the liquid contained in the reservoir.
  • the various accessible conduits of the outside of the device can be fitted with securing means such as non-return valves and the like.
  • the nozzle 160 comprises an air inlet duct 110 in communication relation with the duct 110a formed in the cap, the secondary duct 122, a nebulization zone 130 in which there is a nozzle 115 of the inlet duct of air 110 and a nozzle 125 of the liquid supply conduit 120, an outlet 150 of the nebulization zone 130, a means of adjusting 10 the position of the secondary conduit 122, a conical flare 175 extending the outlet 150 of the zone and a cylindrical chamber 180 extending the conical flare.
  • the adjustment means 170 consists of a screwing with micrometric pitch.
  • the nozzle 160 may also have a free air duct 140 having a nozzle 145 in the nebulization zone 130. This free air duct will be in communication relation with a through duct 140a formed in the cap.
  • the liquid pipe to be nebulized 121 has at its lower end a filter 121a.
  • This filter immerses in the liquid present in the tank.
  • the free air duct or suction duct 140 also has •
  • the nozzle 115 of the air inlet conduit 110 and the nozzle 125 of the liquid supply conduit 120 are positioned respectively so that, by the Venturi effect, the liquid is sucked into the zone nebulization 130 where the air flow leaving the nozzle 115 causes the generation of a flow of nebulized liquid particles, directed towards the outlet 150 of the nebulization zone 130, in known manner
  • larger particles of nebulized liquid are deposited, by gravity or due to their inertia, in the tank 100 where they join the liquid to be nebulized
  • the exhaust opening 190 is directed towards the surface of the liquid contained in the reservoir.
  • FIG. 9 shows a nebulization device 200 comprising the reservoir 100 and the nozzle 160, a compressor 20, a power supply 220 of the compressor 210, a pressure sensor 230, processing means 240, generator of alarm signals 250, sound transmitter 260, indicator light 270 and computer network 280
  • the pressure sensor 230 is positioned on the opening 142 of the duct 140 and emits a signal representative of the pressure (or of the vacuum) in the lateral parts of the nebulization zone 130
  • the processing means 240 for example an electronic card
  • a computer or a threshold circuit receives the signal emitted by the pressure sensor 230 and, according to predetermined criteria for variation of this signal, causes the generation of alarm signals by the signal generator alarm 250, intended for the sound transmitter 260, the indicator light 270 and / or the computer network 280
  • the predetermined criteria are, for example
  • the value of the vacuum sensed by the pressure sensor 230 is different from the vacuum value when said nozzle contains liquid to be nebulized
  • the value of the pressure measured is, when there is no longer of liquid in the nozzle 1 5, lower than it is when there is still liquid to be nebulized in the nozzle
  • the alarm signal generator 250 is suitable for controlling - the emission of sound signals by the sound transmitter 260, for example consists of a loudspeaker,
  • the emission of signals visible by the indicator 270 for example consisting of a light-emitting diode and / or
  • the transmission of alarm signals by the computer network 280 for example constitutes a wired or non-wired link connected to an acquisition card itself connected to a computer system
  • the processing means is also suitable, when it detects that there is no longer any liquid to be nebulized, to stop the electrical supply to the compressor 210
  • FIG. 10 shows an initialization step 300 during which a nozzle is connected to a reservoir of liquid to be nebulized, in such a way that the projection, by the nozzle, of nebulized liquid particles takes place at the inside the tank
  • an air compressor is started to cause the suction of liquid to be nebulized in a tank.
  • step 320 of injection into a nebulization zone For each part of the liquid sucked up during step 310, there then takes place a step 320 of injection into a nebulization zone and a step 330 of spraying the particles of nebulized liquid from the nebulization zone into said tank.
  • a step 370 of measuring the pressure in the nebulization zone is carried out and a step of processing 380 of said measurement.
  • the pressure is measured in a duct. suction with a nozzle in the nebulization zone and, optionally, an opening to the open air, for example in the tank
  • the operation of the air compressor is stopped or an alarm signal is generated, when the pressure measurement meets predetermined variation criteria, as explained with reference to FIG. 9
  • FIG. 11 represents a circular part or diaphragm 196 having three lateral openings 197 which can be inserted into the exhaust opening 190 preferably in a shoulder which this opening has in the terminal part, namely opposite to the nebulization chamber ( see figure 6).
  • This circular part has the function of retaining the largest particles of nebulized liquid so that they form large drops, relative to the particles of nebulized liquid, which fall, under the effect of gravity, into the tank 100 This prevents this form an emulsion which risks piovocating oxidation of the liquid to be nebulized
  • FIG. 12 a variant 26 of the shape of the nozzle 25 (see FIGS. 1 to 4).
  • the opening of the nozzle 25 presents a faith that is not planar, is formed by the intersection cylinder of the liquid supply pipe 70 and of a cylinder surrounding the nozzle of the air supply pipe under pressure 10, having as its axis the supply pipe of pressure year
  • this particular shape 26 allows good performance of the nebulization nozzle 61 to 64
  • the device as described advantageously is arranged in a compartmentalized protective box as shown in FIGS. 13 and 14
  • this box includes a shutter hatch with lock.
  • One of the compartments of the box will be provided to receive the device according to the invention and one of the other compartments will be provided to receive the compressed air compressor.
  • the compressed air outlet of the compressor will be connected by a flexible or rigid pipe to a female end piece fixed in the first compartment and designed to receive the female end piece of the cap of the nebulization device.
  • Another compartment will be provided to receive the electronics of the device.
  • the present invention can receive all arrangements and variants in the field of technical equivalents without departing from the scope of this patent.

Landscapes

  • Nozzles (AREA)

Abstract

The spray nozzle (65) has a liquid supply pipe (85) and an inlet pipe (10) for air under pressure. Each pipe presents a nozzle opened towards a spray zone (30) in which the air under pressure from the air inlet pipe sprays the liquid from the liquid supply pipe. An adjusting unit (70) adjusts a relative position of the nozzle of the liquid supply pipe with respect to the nozzle of the air inlet pipe. An independent claim is also included for a liquid diffusing device.

Description

BUSE DE NEBULISATION ET DISPOSITIF LA COMPORTANT NEBULIZATION NOZZLE AND DEVICE COMPRISING SAME
La présente invention concerne une buse de nebulisation et un dispositif la comportant Elle s'applique, en particulier, aux dispositifs de diffusion de liquides, par exemple à la diffusion de parfums, de combustibles liquides, etc Le premier but de la présente invention est d'obtenir de fines particules de liquide dispersées dans l'airThe present invention relates to a nebulization nozzle and a device comprising it. It applies, in particular, to devices for diffusing liquids, for example for the diffusion of perfumes, liquid fuels, etc. The first object of the present invention is to '' obtain fine particles of liquid dispersed in the air
On rappelle que l'on parle de nebulisation quand la taille des particules de liquide est inférieure à un micron, d'atomisation lorsque cette taille est entre 1 à 10 microns environ et de brumisation lorsque cette taille est supérieure à 10 microns environ On connaît des buses de nebulisation dans lesquels un jet d'air sous pression aspire, par effet Venturi, un liquide à pulvériser et produit une diffusion de ce liquide sous forme de particules de liquide Chacune de ces buses est réalisée par usinage d'une ou plusieurs pièces métalliques constituant le corps de la buse Ces buses présentent des dispersions de fabrication telle que l'orientation du flux de particules de liquide nébulisées et l'angle de diffusion des particules de liquide nébulisées ne sont pas identiques pour les différentes buses De plus, il n'existe pas de buse de nebulisation qui nébulise avec une taille de particules de liquide nébulisées constante Ainsi dans le flux en sortie de la buse on retrouve une proportion notable de grosses particules exigeant la présence de moyens spécifiques de piégeage de ces dernières Enfin, le seul paramètre réglable avec de telles buses est la pression d'air injectée dans la buseIt is recalled that we speak of nebulization when the size of the liquid particles is less than one micron, of atomization when this size is between 1 to 10 microns approximately and of misting when this size is greater than approximately 10 microns. nebulization nozzles in which a pressurized air jet sucks, by Venturi effect, a liquid to be sprayed and produces a diffusion of this liquid in the form of liquid particles Each of these nozzles is produced by machining one or more metal parts constituting the body of the nozzle These nozzles have manufacturing dispersions such that the orientation of the flow of nebulized liquid particles and the angle of diffusion of the nebulized liquid particles are not identical for the different nozzles. there is no nebulization nozzle which nebulizes with a constant size of liquid nebulized particles Thus in the flow leaving the nozzle on retro uve a significant proportion of large particles requiring the presence of specific means for trapping the latter Finally, the only adjustable parameter with such nozzles is the air pressure injected into the nozzle
La présente invention vise à remédier à ces inconvénients A cet effet, la présente invention vise, selon un premier aspect, une buse de nebulisation comportant un conduit d'amenée de liquide et un conduit d'arrivée d'air sous pression, les deux conduits présentant chacun au moins un ajutage débouchant vers une zone de nebulisation dans laquelle l'air sous pression issue du conduit d'arrivée d'air nébulise le liquide issu du conduit d'amenée de liquide, caractérisé en ce qu'elle comporte un moyen de réglage de la position relative de l'ajutage du conduit d'amenée de liquide par i apport à l'ajutage du conduit d'arrivée d'air sous pression Grâce à ces dispositions, on obtient une bonne reproductibihté de la fabrication car le réglage de la position de l'ajutage du conduit d'amenée de liquide permet de compenser, au moins partiellement, les dispersions de fabrication et d'adapter le flux de particules de liquide nébulisées à chaque utilisationThe present invention aims to remedy these drawbacks To this end, the present invention aims, according to a first aspect, a nebulization nozzle comprising a liquid supply duct and a pressurized air inlet duct, the two ducts each having at least one nozzle opening towards a nebulization zone in which the pressurized air coming from the air inlet duct nebulizes the liquid coming from the liquid supply duct, characterized in that it comprises a means of adjustment of the relative position of the nozzle of the liquid supply duct by i addition to the nozzle of the pressurized air inlet duct Thanks to these arrangements, good reproducibility of the production is obtained because the adjustment of the position of the nozzle of the liquid supply conduit makes it possible to compensate, at least partially, for manufacturing dispersions and to adapt the flow of nebulized liquid particles to each use
Selon des caractéristiques particulières, le moyen de réglage est adapté à régler au moins la position longitudinale de l'ajutage d'arπvée de liquide, le long de l'axe du conduit d'amenée de liquide.According to particular characteristics, the adjustment means is adapted to adjust at least the longitudinal position of the liquid inlet nozzle, along the axis of the liquid supply duct.
Grâce à ces dispositions, au moins l'angle de diffusion moyen des particules de liquide nébulisées est réglable Selon des caractéristiques particulières, l'ajutage d'arrivée de liquide ne présente pas de symétrie de révolution, par rapport à l'axe du conduit d'amenée de liquide et le moyen de réglage est adapté à régler au moins la position angulaire de l'ajutage d'arrivée de liquide, par rapport à l'axe du conduit d'amenée de liquide Grâce à ces dispositions, la rotation de ce conduit permet de faire varier le fonctionnement de la buse, le rendement de la buse et la taille des particules nébuliséesThanks to these provisions, at least the average diffusion angle of the nebulized liquid particles is adjustable According to particular characteristics, the liquid inlet nozzle has no symmetry of revolution, with respect to the axis of the liquid supply duct and the adjustment means is adapted to adjust at least the angular position of the '' liquid inlet nozzle, relative to the axis of the liquid supply conduit Thanks to these provisions, the rotation of this conduit allows to vary the operation of the nozzle, the efficiency of the nozzle and the size of the nebulized particles
Selon des caractéristiques particulières, la buse comporte un conduit d'arrivée d'air libre présentant un ajutage dans la zone de nebulisation et une ouverture à l'air libreAccording to particular characteristics, the nozzle comprises a free air intake duct having a nozzle in the nebulization zone and an opening to the open air
Grâce à ces dispositions, la quantité d'air à injecter est réduite et le fonctionnement de la buse est ainsi plus économique En effet, l'inventeur a découvert que, en complément de l'air injecté par l'ajutage du conduit d'arrivée d'air, de l'air provenant du conduit d'arrivée d'air libre participait à la nebulisation du liquide ou pour le moins, accroissait de manière particulièrement significative, le débit du nébulisat La buse objet de la présente invention peut donc fonctionner avec un compresseur de petite dimension, petite consommation électrique et fournissant un petit débit d'air sous pression, ce débit d'air étant complété par le débit d'air additionnel provenant du conduit d'arrivée d'air libreThanks to these provisions, the quantity of air to be injected is reduced and the operation of the nozzle is thus more economical. Indeed, the inventor has discovered that, in addition to the air injected by the nozzle of the inlet duct of air, air coming from the free air intake duct participated in the nebulization of the liquid or at least, increased in a particularly significant way, the flow rate of the nebulizer The nozzle object of the present invention can therefore operate with a small compressor, low power consumption and providing a small flow of air under pressure, this air flow being supplemented by the additional air flow from the free air intake duct
Selon des caractéristiques particulières, la buse comporte un évasement conique en aval de la zone de nebulisationAccording to particular characteristics, the nozzle has a conical flare downstream of the nebulization zone
Grâce à ces dispositions, le flux de particules de liquide nébulisées est dispersé dans l'ajutage coniqueThanks to these arrangements, the flow of nebulized liquid particles is dispersed in the conical nozzle
La présente invention vise aussi un dispositif de nebulisation comportant une buse telle que succinctement exposé ci-dessusThe present invention also relates to a nebulization device comprising a nozzle as succinctly set out above.
Selon des caractéristiques particulières, le dispositif comporte, en outre, un diaphragme placé en la sortie de la zone de nebulisation et adapté a retenir les particules de liquide nébulisées se trouvant dans les parties latérales du flux de particules sortant de la zone de nebulisationAccording to particular characteristics, the device further comprises a diaphragm placed at the outlet from the nebulization zone and adapted to retain the nebulized liquid particles located in the lateral parts of the flow of particles leaving the nebulization zone.
Grâce à ces dispositions, les plus grosses particules de liquide nébulisées, qui se trouvent en périphérie du flux de particules de liquide nébulisées, sont retenues par le diaphragme et, éventuellement, récupérées dans réservoir de liquide à nébuliser Selon des caractéristiques particulières, la buse comporte un conduit d'aspiration d'air présentant un ajutage dans la zone de nebulisation et le dispositif comporte, à une autre ouverture du conduit d'aspiration d'air, un capteur de dépression et un moyen de traitement d'un signal issu dudit capteur et représentatif de la dépression à l'intérieur du conduit d'aspirationThanks to these provisions, the largest particles of nebulized liquid, which are at the periphery of the flow of nebulized liquid particles, are retained by the diaphragm and, possibly, recovered in the reservoir of nebulized liquid. According to particular characteristics, the nozzle comprises an air suction duct having a nozzle in the nebulization zone and the device comprises, at another opening of the air suction duct, a vacuum sensor and a means for processing a signal from said sensor and representative of the vacuum inside the suction duct
Selon une autre caractéristique de l'invention, le capteur de dépression obture totalement le conduit d'aspiration d'air, mais en variante l'obturation ne pourra être que partielle, le corps du capteur de pression créant alors dans ce cas une perte de charge plus ou moins importanteAccording to another characteristic of the invention, the vacuum sensor completely closes the air intake duct, but as a variant the obturation can only be partial, the body of the pressure sensor then creating in this case a loss of more or less heavy load
Grâce à ces dispositions, le capteur de dépression permet de déterminer l'absence de liquide à l'ajutage du conduit d'amenée de liquide qui se trouve dans la zone de nebulisation. En effet, l'inventeur a découvert que, lorsqu'il n'y a plus de liquide dans cet ajutage, la valeur de la dépression captée par le capteur est différente de la valeur de dépression lorsque ledit ajutage contient du liquide à nébuliser On observe que le conduit d'aspiration d'air et le conduit d'arπvée d'air libre succinctement exposé ci-dessus peuvent être confondusThanks to these arrangements, the vacuum sensor makes it possible to determine the absence of liquid at the nozzle of the liquid supply pipe which is in the nebulization zone. Indeed, the inventor has discovered that, when there is no longer any liquid in this nozzle, the value of the vacuum sensed by the sensor is different from the vacuum value when said nozzle contains liquid to be nebulized It is observed that the air suction duct and the free air intake duct succinctly described above can be confused
Le moyen de traitement du signal peut alors générer une alarme, sonore, visuelle ou transmise à distance sur support filaire ou non filaire et/ou provoquer l'arrêt d'alimentation électrique d'un compresseur d'air fournissant de l'air sous pression à la buseThe signal processing means can then generate an alarm, audible, visual or transmitted remotely on wired or non-wired support and / or cause the power supply to an air compressor supplying pressurized air to stop. at the nozzle
Selon des caractéristiques particulières, le conduit d'aspiration de liquide comporte, en outre, une ouverture à l'air libre Ainsi, le conduit d'aspiration de liquide présente les avantages du conduit d'arrivée d'air libre succinctement expose ci-dessus, la quantité d'air à injecter est réduite et le fonctionnement de la buse est ainsi plus économiqueAccording to particular characteristics, the liquid suction duct also has an opening to the open air. Thus, the liquid suction duct has the advantages of the free air inlet duct, briefly described above. , the quantity of air to be injected is reduced and the operation of the nozzle is thus more economical
D'autres avantages, buts et caractéristiques de la présente invention ressortiront de la description qui va suivre, faite en regard des dessins annexés dans lesquelsOther advantages, aims and characteristics of the present invention will emerge from the description which follows, given with reference to the appended drawings in which
- la figure 1 représente, en coupe, une buse selon un premier mode de réalisation particulier d'un premier aspect de la présente invention, la figure 1 a représente selon une échelle agrandie des détails de la figure 1 , la figure 2 représente, en coupe, une buse selon un deuxième mode de réalisation particulier d'un premier aspect de la présente invention, la figure 3 représente, en coupe, une buse selon un troisième mode de réalisation particulier d'un premier aspect de la présente invention, la figure 4 représente, en coupe, une buse selon un quatrième mode de réalisation particulier d'un premier aspect de la présente invention,- Figure 1 shows, in section, a nozzle according to a first particular embodiment of a first aspect of the present invention, Figure 1a shows on an enlarged scale of the details of Figure 1, Figure 2 shows, in section, a nozzle according to a second particular embodiment of a first aspect of the present invention, FIG. 3 represents, in section, a nozzle according to a third particular embodiment of a first aspect of the present invention, the figure 4 shows, in section, a nozzle according to a fourth particular embodiment of a first aspect of the present invention,
- la figure 5 représente, en perspective coupée, une buse selon un autre mode de réalisation particulier du premier aspect de la présente invention,FIG. 5 represents, in cut perspective, a nozzle according to another particular embodiment of the first aspect of the present invention,
- les figures 6 et 7 représentent, en coupe, un mode de réalisation particulier, d'un dispositif de nebulisation selon un autre aspect de la présente invention,FIGS. 6 and 7 represent, in section, a particular embodiment of a nebulization device according to another aspect of the present invention,
- la figure 8 est une vue de détail de la figure 6,FIG. 8 is a detailed view of FIG. 6,
- la figure 9 représente un dispositif de nebulisation comportant des moyens de génération d'alarme,FIG. 9 represents a nebulization device comprising alarm generation means,
- la figure 10 représente, schématiquement, un organigramme de fonctionnement d'un dispositif de nebulisation, selon un mode de réalisation particulier d'un procédé objet d'un aspect de la présente invention,FIG. 10 schematically represents a flow diagram of the operation of a nebulization device, according to a particular embodiment of a method which is the subject of an aspect of the present invention,
- la figure 11 représente, schématiquement, un obturateur adaptable aux modes de réalisation Illustrés aux figures 6 à 9, etFIG. 11 schematically represents a shutter adaptable to the embodiments illustrated in FIGS. 6 to 9, and
- la figure 12 représente, schématiquement, une variante de forme d'ajutage de conduit d'amenée de liquide qui peut être utilisé dans chacun des modes de réalisation de la présente invention,FIG. 12 schematically represents a variant form of nozzle for the liquid supply duct which can be used in each of the embodiments of the present invention,
- les figures 13 et 14 sont des vues en perspective d'un coffret ouvert (fig 13) et fermé (fig 14) prévu pour recevoir le dispositif selon l'invention.- Figures 13 and 14 are perspective views of an open box (fig 13) and closed (fig 14) intended to receive the device according to the invention.
On observe, dans chacune des figures 1 à 4, une buse 61 à 64, respectivement, comportant, chacune, un corps de buse, un conduit d'arrivée d'air 10, un conduit d'amenée de liquide à nébuliser 20, une zone de nebulisation 30 dans laquelle se trouvent un ajutage 15 du conduit d'arrivée d'air 10 et un ajutage 25 du conduit d'amenée de liquide 20, un conduit d'air libre 40 présentant un ajutage 45 dans la zone de nebulisation 30, la zone de nebulisation étant formée dans le corps de buse et les différents conduits pénétrant dans ledit corps, plus précisément ces dits conduits étant engagés dans des perçages pratiqués dans le corps de buse, une étanchéité appropriée étant réalisée entre les faces externes cylindriques des conduits et les faces cylindriques des perçages correspondants On peut voir que le conduit 20 pénètre dans la zone de nebulisation 30 laquelle est formée par une chambre cylindrique. On peut voir que le conduit 20 peut être formé d'une partie contenante et d'une partie contenue montée dans la partie contenante selon un ajustement du type serré ou légèrement serré, l'ajutage 25 étant ménagé en extrémité de la partie contenue. Le type d'ajustement peut autoriser le coulissement de la partie contenue dans la partie contenant ou bien l'interdire.One observes, in each of FIGS. 1 to 4, a nozzle 61 to 64, respectively, each comprising a nozzle body, an air inlet duct 10, a supply duct for liquid to be nebulized 20, a nebulization zone 30 in which there is a nozzle 15 of the air inlet duct 10 and a nozzle 25 of the liquid supply duct 20, a free air duct 40 having a nozzle 45 in the nebulization zone 30, the nebulization zone being formed in the nozzle body and the various conduits penetrating into said body, more precisely these said conduits being engaged in holes made in the nozzle body, an appropriate seal being formed between the cylindrical external faces of the conduits and the cylindrical faces of the corresponding holes It can be seen that the conduit 20 penetrates into the nebulization zone 30 which is formed by a cylindrical chamber. It can be seen that the conduit 20 can be formed of a containing part and of a contained part mounted in the containing part according to an adjustment of the tight or slightly tight type, the nozzle 25 being formed at the end of the contained part. The type of adjustment can allow the sliding of the part contained in the containing part or prohibit it.
On peut voir également que l'ajutage 45 est dans un plan géométrique perpendiculaire à l'axe longitudinal du conduit 40 et que l'ajutage 15 est disposé selon un plan géométrique perpendiculaire à l'axe longitudinal du conduit 10. On peut voir également que les axes longitudinaux des conduits 10, 20 et 40 sont sécants, les uns aux autres, que l'axe longitudinal du conduit 10 est perpendiculaire aux axes longitudinaux des conduits 40 et 20. On peut voir également que les conduits 40 et 20 sont axialement alignés.It can also be seen that the nozzle 45 is in a geometric plane perpendicular to the longitudinal axis of the conduit 40 and that the nozzle 15 is arranged in a geometric plane perpendicular to the longitudinal axis of the conduit 10. It can also be seen that the longitudinal axes of the conduits 10, 20 and 40 are intersecting with each other, that the longitudinal axis of the conduit 10 is perpendicular to the longitudinal axes of the conduits 40 and 20. It can also be seen that the conduits 40 and 20 are axially aligned .
Le conduit d'arπvée d'air 10 est relié à un compresseur (figure 9) qui lui fournit de l'air sous pression, par exemple entre un et dix fois la pression atmosphénque. Le conduit d'amenée de liquide à nébuliser 20 est relié, à une extrémité, a un réservoir de liquide à nébuliser (figures 6, 7 et 9) Dans la zone de nebulisation 30, l'ajutage 15 du conduit d'arrivée d'air 10 et l'ajutage 25 du conduit d'amenée de liquide 20 sont positionnés respectivement poui que, par effet Venturi, le liquide soit aspire dans la zone de nebulisation 30 où le flux d'an sortant de l'ajutage 15 provoque la génération d'un flux de particules de liquides nébulisées, dirigées vers une sortie 50 de la zone de nebulisation 30, de manière connueThe air intake duct 10 is connected to a compressor (FIG. 9) which supplies it with pressurized air, for example between one and ten times the atmospheric pressure. The nebulization liquid supply pipe 20 is connected, at one end, to a tank for spraying liquid (FIGS. 6, 7 and 9) In the nebulization zone 30, the nozzle 15 of the supply supply pipe air 10 and the nozzle 25 of the liquid supply conduit 20 are positioned respectively since, by the Venturi effect, the liquid is sucked into the nebulization zone 30 where the flow of an outgoing from the nozzle 15 causes the generation of a flow of nebulized liquid particles, directed towards an outlet 50 of the nebulization zone 30, in known manner
On observe que la buse 61 à 64 comporte un moyen de réglage 70 de la position de l'ajutage 25 du conduit d'amenée de liquide 20 Le réglage pourra être opéré par coulissement longitudinal et/ou rotation du conduit d'amenée de liquide 20 dans la buse 61 à 64 Dans ce but le conduit d'amenée du liquide pourra présenter une section filetée et le perçage du corps de buse destiné à recevoir ledit conduit sera taraudé, le filetage du conduit coopérant dans ce cas avec le taraudage du perçage Avec une telle solution le déplacement axial du conduit est indissociable de sa mise en rotation. Selon une vaπante d'exécution, le conduit 20 d'aspiration de liquide et le perçage correspondant sont lisses ce qui permet l'ajustement longitudinal du conduit indépendamment de son ajustement en rotation.It is observed that the nozzle 61 to 64 comprises a means of adjusting 70 of the position of the nozzle 25 of the liquid supply conduit 20 The adjustment can be made by longitudinal sliding and / or rotation of the liquid supply conduit 20 in the nozzle 61 to 64 For this purpose the liquid supply conduit may have a threaded section and the bore of the nozzle body intended to receive said conduit will be tapped, the thread of the conduit cooperating in this case with the tapping of the bore With such a solution the axial displacement of the conduit is inseparable from its rotation. According to an execution variant, the liquid suction duct 20 and the corresponding bore are smooth, which allows the longitudinal adjustment of the duct independently of its rotation adjustment.
Le réglage de la position de l'ajutage 25, par utilisation du moyen de réglage 70, permet de faire varier des paramètres de fonctionnement de la buse 61 à 64, de compenser, au moins partiellement, les dispersions de fabrication et d'adapter le flux de particules de liquide nébulisées à chaque utilisation En déplaçant longitudmalement l'ajutage 25, on règle au moins l'angle de diffusion moyen des particules de liquide nébulisées, par rapport à l'axe du conduit d'arrivée d'air 10The adjustment of the position of the nozzle 25, by using the adjustment means 70, makes it possible to vary the operating parameters of the nozzle 61 to 64, to compensate, at least partially, for the manufacturing dispersions and to adapt the flow of liquid particles nebulized at each use By moving the nozzle 25 longitudinally, at least one adjusts the average diffusion angle of the nebulized liquid particles, relative to the axis of the air inlet duct 10
En figure 1 , les ajutages 15 et 25 se touchent, à l'épaisseur près du conduit 25 En figure 2, au contraire, l'ajutage 25 est éloignée de l'ajutage 15 d'une distance de même ordre de grandeur que le diamètre de l'ajutage 25, c'est-à-dire entre la moitié et trois fois ce diamètre En figure 3, on observe les mêmes éléments qu'en figure 2, auxquels s'ajoute un évasement conique 75 prolongeant axialement la zone de nebulisation 30 En figure 4, on observe les mêmes éléments que dans la figure 3, auxquels s'ajoutent un prolongement de l'évasement conique 75 sous la forme d'une chambre cylindrique 80 jouant le rôle de diaphragme, c'est-à-dire retenant latéralement le flux de particules liquide nébulisées. Ainsi, les particules les plus grosses, qui sont généralement situées dans les parties latérales de ce flux, se déposent sur la surface latérale cylindrique de la chambre 80 et coulent sous l'effet de la gravité, pour être récupérées soit dans la zone de nebulisation, soit dans le réservoir de liquide à nébuliser (voir figures 6 a 8) On observe en figure 1 à 3 que les ajutages 25 et 45 sont disposés selon des plans géométriques parallèles, et que l'ajutage 25 est dans un plan géométrique perpendiculaire à l'axe longitudinal du conduit 20, tandis qu'en figure 4,_on peut observer que l'ajutage d'arrivée de liquide 25 ne présente pas de symétrie de révolution, par rapport à l'axe du conduit d'amenée de liquide : le plan de l'ajutage 25 présente, par rapport à l'axe longitudinal du conduit 25, un angle différent de 90 degrés. Dans des variantes, l'absence de symétrie de révolution se traduit par une forme non circulaire du conduit 20 Le moyen de réglage 70 est adapte à régler au moins la position angulaire de l'ajutage d'arrivée de liquide 25, par rapport a l'axe du conduit d'amenée de liquide 20 La rotation de ce conduit 20 permet de faire varier le fonctionnement de la buse 64 Bien que cela ne soit pas représenté aux figuies, en variante, le moyen de réglage 70 de la position de l'ajutage 25 permet, en outre, un réglage de la distance entre cet ajutage 25 et l'ajutage 15 le long de l'axe de l'ajutage 15, un réglage de la distance entre cet ajutage 25 et l'axe de l'ajutage 15 et/ou un réglage de l'angle entie les axes des ajutages 15 et 25, selon des moyens mécaniques connus en soitIn FIG. 1, the nozzles 15 and 25 touch each other, to the thickness near the conduit 25 In FIG. 2, on the contrary, the nozzle 25 is distant from the nozzle 15 by a distance of the same order of magnitude as the diameter of the nozzle 25, that is to say between half and three times this diameter In FIG. 3, the same elements are observed as in FIG. 2, to which is added a conical flaring 75 axially extending the nebulization zone In FIG. 4, the same elements are observed as in FIG. 3, to which is added an extension of the conical flare 75 in the form of a cylindrical chamber 80 acting as a diaphragm, that is to say laterally retaining the flow of nebulized liquid particles. Thus, the largest particles, which are generally located in the lateral parts of this flow, are deposited on the cylindrical lateral surface of the chamber 80 and flow under the effect of gravity, to be recovered either in the nebulization zone , either in the reservoir of liquid to be nebulized (see FIGS. 6 to 8) It can be seen in FIG. 1 to 3 that the nozzles 25 and 45 are arranged in parallel geometric planes, and that the nozzle 25 is in a geometric plane perpendicular to the longitudinal axis of the conduit 20, while in FIG. 4, it can be observed that the liquid inlet nozzle 25 does not exhibit symmetry of revolution, with respect to the axis of the liquid supply conduit: the plane of the nozzle 25 has, relative to the longitudinal axis of the conduit 25, an angle different from 90 degrees. In variants, the absence of symmetry of revolution results in a non-circular shape of the conduit 20 The adjustment means 70 is adapted to adjust at least the angular position of the liquid inlet nozzle 25, relative to the axis of the liquid supply duct 20 The rotation of this duct 20 makes it possible to vary the operation of the nozzle 64 Although this is not shown in the figures, as a variant, the means 70 for adjusting the position of the nozzle 25 allows, in addition, an adjustment of the distance between this nozzle 25 and the nozzle 15 along the axis of the nozzle 15, an adjustment of the distance between this nozzle 25 and the axis of the nozzle 15 and / or an adjustment of the angle between the axes of the nozzles 15 and 25, according to mechanical means known per se
Dans chacune des figures 1 à 4, on observe le conduit d'arrivée d'air libre 40 qui débouche dans la zone de nebulisation 30, par l'ajutage 45 et dont une autre ouverture se trouve à l'air libre, par exemple dans le réservoir de liquide à nébuliser (voir figures 6 à 8) La forme et/ou la position de l'ajutage 45 du conduit d'arrivée d'air libre dans la zone de nebulisation 30 provoquent l'aspiration d'air libre dans cette zone, par exemple par effet venturi ou par effet de la dépression générée sur les parties latérales de la zone de nebulisation 30 par le flux d'air injecte par l'ajutage 15 L'inventeur a observé que la présence du conduit d'arrivée d'air libre 40 permettait d'augmenter le rendement de chaque buse 61 a 64, par rapport à une même buse qui ne serait pas dotée de ce conduit d'arrivée d'air libre 40In each of FIGS. 1 to 4, there is observed the free air intake duct 40 which opens into the nebulization zone 30, through the nozzle 45 and of which another opening is in the open air, for example in the reservoir of liquid to be nebulized (see FIGS. 6 to 8) The shape and / or the position of the nozzle 45 of the free air intake duct in the nebulization zone 30 cause the suction of free air in this zone, for example by venturi effect or by effect of the vacuum generated on the lateral parts of the nebulization zone 30 by the air flow injected by the nozzle 15 The inventor observed that the presence of the inlet duct d free air 40 made it possible to increase the efficiency of each nozzle 61 to 64, compared with the same nozzle which would not be provided with this free air inlet duct 40
On observe, en figure 5, une buse 65 comportant un conduit d'arrivée d'air 10, un conduit cylindrique 85 d'amenée de liquide à nébuliser d'un côté et d'amenée d'air libre de l'autre côté, une zone de nebulisation 30 dans laquelle se trouve une ajutage 15 du conduit d'arrivée d'air 10 et deux ouvertures 86 et 87 du conduit 85 Le conduit 85 est adapte a coulisser dans un perçage cylindrique effectue dans la corps de la buse 65 De cette manière, le moyen de réglage 70, constitue par ce perçage, permet de faire coulisser le conduit 85 aussi bien en rotation par rapport a son axe qu'en translation le long de son axe, ce qui permet de faire varier la position des ouvertures 86 et 87 par rapport a l'ajutage 15 et constitue donc deux paramètres de réglage du fonctionnement de la buse 65 En dehors des ouvertures 86 et 87, le conduit 85 possède à une de ses extrémités une ouverture a l'air libre et à l'autre extrémité une ouverture dans un réservoir de liquide a nebuliserFIG. 5 shows a nozzle 65 comprising an air inlet duct 10, a cylindrical duct 85 for supplying liquid to be nebulized on one side and for supplying free air on the other side, a nebulization zone 30 in which there is a nozzle 15 of the duct air inlet 10 and two openings 86 and 87 of the duct 85 The duct 85 is adapted to slide in a cylindrical bore made in the body of the nozzle 65 In this way, the adjustment means 70, constitutes by this bore, allows the conduit 85 to slide as well in rotation relative to its axis as in translation along its axis, which makes it possible to vary the position of the openings 86 and 87 relative to the nozzle 15 and therefore constitutes two parameters for adjusting the operation of the nozzle 65 Outside the openings 86 and 87, the duct 85 has at one of its ends an opening to the open air and at the other end an opening in a tank of liquid to be nebulized
Les ouvertures 86 et 87 sont circulaires et possèdent des diamètres sensiblement égaux au diamètre de l'ajutage 15 Elles sont placées symétπquement par rapport à l'axe longitudinal du conduit 85 Elles sont donc diamétralement opposéesThe openings 86 and 87 are circular and have diameters substantially equal to the diameter of the nozzle 15 They are placed symmetrically with respect to the longitudinal axis of the conduit 85 They are therefore diametrically opposite
On observe, en figures 6 a 8, un réservoir de liquide a nebuliser 100, un conduit d'amenée de liquide a nebuliser 120 constitue d'une tige creuse 121 plongeant dans le liquide contenu dans le réservoir 100 et d un conduit secondaire 122 insère dans une buse 160 ledit conduit secondaire étant en relation de communication avec le conduit 120 La buse 160 repose sur le buvant du récipient par l'intermédiaire d'une collerette de centrage 161 indépendante ou enracinée au corps de buse Une bague d inviolabilité 162 est positionnée autour de la partie supeπeure du récipient et vient par un collet de blocage 163, qu'elle présente en partie supeπeure, en appui contre la collerette de centrage 161 Cette bague d'ιnvιolabιlιte162 est fixée de manière indémontable sur la partie supérieure du récipient Par ailleurs la buse 160 est recouverte d'une coiffe 164 dans laquelle sont formes un conduit d'arrivée d'air 110a et un conduit de sortie du nebulisat 195We observe, in FIGS. 6 to 8, a tank of liquid to be nebulized 100, a conduit for supplying liquid to be nebulized 120 consists of a hollow rod 121 immersed in the liquid contained in the tank 100 and a secondary conduit 122 inserts in a nozzle 160 said secondary conduit being in communication relation with conduit 120 The nozzle 160 rests on the rim of the container by means of a centering collar 161 independent or rooted in the nozzle body A tamper-evident ring 162 is positioned around the upper part of the container and comes by a locking collar 163, which it presents in the upper part, bearing against the centering flange 161 the nozzle 160 is covered with a cap 164 in which are formed an air inlet duct 110a and an outlet duct for the nebulisat 195
Le conduit d'arrivée d'air 110a est avantageusement prolonge par un embout 110b de raccordement étanche à une source d'air sous pression par exemple la sortie d'air comprimé d'un compresseur Cet embout de raccordement 110b peut être vertical comme représenté et s'étendre soit vers le bas soit vers le haut mais ledit embout peut aussi occuper une position horizontaleThe air inlet duct 110a is advantageously extended by a nozzle 110b for tight connection to a source of pressurized air, for example the outlet of compressed air from a compressor. This connector nozzle 110b can be vertical as shown and extend either downwards or upwards but said endpiece can also occupy a horizontal position
La coiffe 164 est fixée à la collerette de centrage 161 par des vis et vient en recouvrement du collet de blocage 163 que présente la bague d'inviolabilité 162 Chacune des vis est engagée dans un perçage traversant de la collerette 161 et dans un taraudage borgne pratique dans la coiffe 164 De part cette disposition les têtes de vis sont dans le volume interne du réservoir ou en regard de ce dernier et de ce fait sont inaccessibles Ainsi, après fixation de la bague d'inviolabilité 162 sur le récipient, il ne sera plus possible de démonter la buse, sans destruction de la bague, et d'accéder au contenu du récipient Ce dispositif pourra alors être a usage unique et jetable après épuisement du liquide contenu dans le réservoirThe cap 164 is fixed to the centering collar 161 by screws and overlaps the locking collar 163 which the tamper-evident ring has 162 Each of the screws is engaged in a through hole in the collar 161 and in a practical blind tapping in the cover 164 Due to this arrangement, the screw heads are in the internal volume of the tank or facing the latter and therefore are inaccessible. Thus, after fixing the tamper-evident ring 162 on the container, it will no longer be possible to disassemble the nozzle, without destroying the ring, and to access the contents of the container. This device can then be for single use and disposable after exhaustion of the liquid contained in the reservoir.
Pour renforcer la sécurité en interdisant l'introduction dans le dispositif et notamment dans le réservoir de corps étranger ou de liquide et dans ce cas avant ou après épuisement complet du liquide contenu initialement dans le réservoir, les différents conduits accessibles de l'extérieur du dispositif pourront être équipés de moyens de sécurisation tel que des clapets antiretour et autre.To reinforce security by prohibiting the introduction into the device and in particular into the foreign body or liquid reservoir and in this case before or after complete exhaustion of the liquid initially contained in the reservoir, the various accessible conduits of the outside of the device can be fitted with securing means such as non-return valves and the like.
La buse 160 comporte un conduit d'arrivée d'air 110 en relation de communication avec le conduit 110a ménagé dans la coiffe, le conduit secondaire 122, une zone de nebulisation 130 dans laquelle se trouve un ajutage 115 du conduit d'arrivée d'air 110 et un ajutage 125 du conduit d'amenée de liquide 120, une sortie 150 de la zone de nebulisation 130, un moyen de réglage 1 0 de la position du conduit secondaire 122, un évasement conique 175 prolongeant la sortie 150 de la zone de nebulisation et une chambre cylindπque 180 prolongeant l'évasement conique. Le moyen de réglage 170 est constitué d'un vissage à pas micrométrique. La buse 160, pourra présenter de plus un conduit d'air libre 140 présentant un ajutage145 dans la zone de nebulisation 130. Ce conduit d'air libre sera en relation de communication avec un conduit traversant 140a pratiqué dans la coiffe.The nozzle 160 comprises an air inlet duct 110 in communication relation with the duct 110a formed in the cap, the secondary duct 122, a nebulization zone 130 in which there is a nozzle 115 of the inlet duct of air 110 and a nozzle 125 of the liquid supply conduit 120, an outlet 150 of the nebulization zone 130, a means of adjusting 10 the position of the secondary conduit 122, a conical flare 175 extending the outlet 150 of the zone and a cylindrical chamber 180 extending the conical flare. The adjustment means 170 consists of a screwing with micrometric pitch. The nozzle 160 may also have a free air duct 140 having a nozzle 145 in the nebulization zone 130. This free air duct will be in communication relation with a through duct 140a formed in the cap.
Préférentiellement, le conduit de liquide à nébuliser 121 , comporte en extrémité inférieure un filtre 121a. Ce filtre plonge dans le liquide présent dans le réservoir. Le conduit d'air libre ou conduit d'aspiration 140 présente, en outre • Preferably, the liquid pipe to be nebulized 121 has at its lower end a filter 121a. This filter immerses in the liquid present in the tank. The free air duct or suction duct 140 also has •
- une ouverture 142 destinée à recevoir un capteur de dépression (voir figure 9)- an opening 142 intended to receive a vacuum sensor (see FIG. 9)
Dans la zone de nebulisation 130, l'ajutage 115 du conduit d'arrivée d'air 110 et l'ajutage 125 du conduit d'amenée de liquide 120 sont positionnés respectivement pour que, par effet Venturi, le liquide soit aspiré dans la zone de nebulisation 130 où le flux d'air sortant de l'ajutage 115 provoque la génération d'un flux de particules de liquides nébulisées, dirigées vers la sortie 150 de la zone de nebulisation 130, de manière connueIn the nebulization zone 130, the nozzle 115 of the air inlet conduit 110 and the nozzle 125 of the liquid supply conduit 120 are positioned respectively so that, by the Venturi effect, the liquid is sucked into the zone nebulization 130 where the air flow leaving the nozzle 115 causes the generation of a flow of nebulized liquid particles, directed towards the outlet 150 of the nebulization zone 130, in known manner
L'inventeur a observé que la présence du conduit d'arrivée d'air libre 140 permettait d'augmenter le rendement de la buse 160, pai rapport à une même buse qui ne serait pas dotée de ce conduit d'arrivée d'air libre 140 En outre, puisque le conduit d'aspiration aspire de l'air dans la chambre 180, une partie du flux issu de la buse est reinjecté dans la zone de nebulisation, ce qui permet d'augmenter la concentration de particules de liquide nébulisées dans le flux quittant la chambre 180The inventor observed that the presence of the free air inlet duct 140 made it possible to increase the efficiency of the nozzle 160, compared to the same nozzle which would not be provided with this free air inlet duct. 140 In addition, since the suction duct draws air into the chamber 180, part of the flow from the nozzle is reinjected into the nebulization zone, which makes it possible to increase the concentration of particles of liquid nebulized in the flow leaving chamber 180
D'une manière caractéristique d'un aspect de la présente invention, l'ouverture d'échappement 190 par laquelle le flux sortant de la chambre 180 quitte la buse 160 débouche dans le réservoir de liquide 100 et le réservoir de liquide 100 comporte une ouverture de libération 195 des particules de liquide nébulisées par laquelle une partie des particules de liquide nébulisées provenant de l'ouverture d'échappement 190 quitte le réservoir 100 et le liquide de nebulisation pour être diffusées dans l'atmosphère entourant ce dispositif de nebulisation Ainsi, les plus grosses particules de liquide nébulisées se déposent, par effet de gravité ou du fait de leur inertie, dans le réservoir 100 où elles rejoignent le liquide a nébuliserTypically in one aspect of the present invention, the exhaust opening 190 through which the flow leaving the chamber 180 leaves the nozzle 160 opens into the liquid tank 100 and the liquid tank 100 has an opening release 195 of the nebulized liquid particles by which a part of the nebulized liquid particles coming from the exhaust opening 190 leaves the tank 100 and the nebulization liquid to be diffused in the atmosphere surrounding this nebulization device. larger particles of nebulized liquid are deposited, by gravity or due to their inertia, in the tank 100 where they join the liquid to be nebulized
Préférentiellement, l'ouverture d'échappement 190 est dirigée vers la surface du liquide contenu dans le réservoir.Preferably, the exhaust opening 190 is directed towards the surface of the liquid contained in the reservoir.
On observe, en figure 9, un dispositif de nebulisation 200 comportant le réservoir 100 et la buse 160, un compresseur 2 0, une alimentation électrique 220 du compresseur 210, un capteur de pression 230, un moyen de traitement 240, un générateur de signaux d'alarme 250, un émetteur sonore 260, un voyant 270 et un réseau informatique 280FIG. 9 shows a nebulization device 200 comprising the reservoir 100 and the nozzle 160, a compressor 20, a power supply 220 of the compressor 210, a pressure sensor 230, processing means 240, generator of alarm signals 250, sound transmitter 260, indicator light 270 and computer network 280
Le capteur de pression 230 est positionné sur l'ouverture 142 du conduit 140 et émet un signal représentatif de la pression (ou de la dépression) dans les parties latérales de la zone de nebulisation 130 Le moyen de traitement 240, par exemple une cartes électroniqueThe pressure sensor 230 is positioned on the opening 142 of the duct 140 and emits a signal representative of the pressure (or of the vacuum) in the lateral parts of the nebulization zone 130 The processing means 240, for example an electronic card
(éventuellement à microprocesseur), un ordinateur ou un circuit à seuil, reçoit le signal émis par le capteur de pression 230 et, en fonction de critères de variation de ce signal prédéterminés, provoque la génération de signaux d'alarme par le générateur de signaux d'alarme 250, à destination de l'émetteur sonore 260, du voyant 270 et/ou du réseau informatique 280 Les critères prédéterminés sont, par exemple(possibly with microprocessor), a computer or a threshold circuit, receives the signal emitted by the pressure sensor 230 and, according to predetermined criteria for variation of this signal, causes the generation of alarm signals by the signal generator alarm 250, intended for the sound transmitter 260, the indicator light 270 and / or the computer network 280 The predetermined criteria are, for example
- la diminution de la pression mesurée en dessous d'un niveau seuil et/ou- the decrease in pressure measured below a threshold level and / or
- la diminution de la pression mesurée d'au moins 10 % en moins de 5 minutes L'inventeur à, en effet, découvert que, lorsqu'il n'y a plus de liquide dans l'ajutage 125, la valeur de la dépression captée par le capteur de pression 230 est différente de la valeur de dépression lorsque ledit ajutage contient du liquide à nébuliser Dans le mode de réalisation illustrée en figures 6 à 9, la valeui de la pression mesurée est, lorsqu'il n'y a plus de liquide dans l'ajutage 1 5, inférieure à ce qu'elle est lorsqu'il y a encore du liquide à nébuliser dans l'ajutage- the decrease in pressure measured by at least 10% in less than 5 minutes The inventor has, in fact, discovered that, when there is no longer any liquid in the nozzle 125, the value of the vacuum sensed by the pressure sensor 230 is different from the vacuum value when said nozzle contains liquid to be nebulized In the embodiment illustrated in FIGS. 6 to 9, the value of the pressure measured is, when there is no longer of liquid in the nozzle 1 5, lower than it is when there is still liquid to be nebulized in the nozzle
125125
Le générateur de signaux d'alarme 250 est adapté à commander - l'émission de signaux sonores par l'émetteur sonore 260, par exemple constitue d'un haut-parleur,The alarm signal generator 250 is suitable for controlling - the emission of sound signals by the sound transmitter 260, for example consists of a loudspeaker,
- l'émission de signaux visibles par le voyant 270, par exemple constitué d'une diode électroluminescente et/outhe emission of signals visible by the indicator 270, for example consisting of a light-emitting diode and / or
- la transmission de signaux d'alarme par le réseau informatique 280, par exemple constitue d'une liaison filaire ou non filaire reliée à une carte d'acquisition elle même reliée à un système informatiquethe transmission of alarm signals by the computer network 280, for example constitutes a wired or non-wired link connected to an acquisition card itself connected to a computer system
Le moyen de traitement est aussi adapte, lorsqu'il a détecte qu'il n'y a plus de liquide à nébuliser, à arrêter l'alimentation électrique du compresseur 210The processing means is also suitable, when it detects that there is no longer any liquid to be nebulized, to stop the electrical supply to the compressor 210
On observe, en figure 10, une étape d'initialisation 300 au cours de laquelle on connecte une buse à un réservoir de liquide à nébuliser, de telle manière que la projection, par la buse, de particules de liquide nébulisées se fasse à l'intérieur du réservoirFIG. 10 shows an initialization step 300 during which a nozzle is connected to a reservoir of liquid to be nebulized, in such a way that the projection, by the nozzle, of nebulized liquid particles takes place at the inside the tank
Ensuite, au cours d'une étape 310, on met en marche un compresseur d'air pour provoquer l'aspiration de liquide à nébuliser dans un réservoirThen, during a step 310, an air compressor is started to cause the suction of liquid to be nebulized in a tank.
Pour chaque partie du liquide aspirée au cours de l'étape 310, se déroule ensuite une étape 320 d'injection dans une zone de nebulisation et une étape 330 de projection des particules de liquide nébulisées depuis la zone de nebulisation dans ledit réservoirFor each part of the liquid sucked up during step 310, there then takes place a step 320 of injection into a nebulization zone and a step 330 of spraying the particles of nebulized liquid from the nebulization zone into said tank.
Une partie des particules de liquide nébulisées quittent ensuite le réservoir par une ouverture de libération, au cours d'une étape 340Part of the nebulized liquid particles then leave the reservoir through a release opening, during a step 340
Parallèlement aux étapes 320 à 340, une partie de l'air dans le réservoir est aspirée dans un conduit d'air libre, étape 350, et injecté dans la zone de nebulisation, étape 360 Parallèlement aux étapes 320 à 360, on effectue une étape de mesure 370 de la pression dans la zone de nebulisation et une étape de traitement 380 de ladite mesure Préférentiellement, au cours de l'étape de mesure 370, on mesure la pression dans un conduit d'aspiration présentant un ajutage dans la zone de nebulisation et, éventuellement une ouverture à l'air libre, par exemple dans le réservoirIn parallel with steps 320 to 340, part of the air in the tank is sucked into a free air duct, step 350, and injected into the nebulization zone, step 360 In parallel with steps 320 to 360, a step 370 of measuring the pressure in the nebulization zone is carried out and a step of processing 380 of said measurement. Preferably, during the measurement step 370, the pressure is measured in a duct. suction with a nozzle in the nebulization zone and, optionally, an opening to the open air, for example in the tank
Au cours de l'étape de traitement 380, on arrête le fonctionnement du compresseur d'air ou on génère un signal d'alarme, lorsque la mesure de la pression répond à des critères de variation prédéterminés, comme explique en regard de la figure 9During the processing step 380, the operation of the air compressor is stopped or an alarm signal is generated, when the pressure measurement meets predetermined variation criteria, as explained with reference to FIG. 9
La figure 11 représente une pièce circulaire ou diaphragme 196 possédant trois ouvertures latérales 197 qui peut être insérée dans l'ouverture d'échappement 190 préférentiellement dans un épaulement que cette ouverture présente en partie terminale à savoir à l'opposée de la chambre de nebulisation (voir figure 6). Cette pièce circulaire a pour fonction de retenir les particules de liquide nébulisé les plus grosses afin qu'elles forment des gouttes de grandes dimensions, par rapport aux particules de liquide nébulisé, qui tombent, sous l'effet de la gravité, dans le réservoir 100. On évite ainsi que ce forme une émulsion qui risque de piovoquer une oxydation du liquide à nébuliserFIG. 11 represents a circular part or diaphragm 196 having three lateral openings 197 which can be inserted into the exhaust opening 190 preferably in a shoulder which this opening has in the terminal part, namely opposite to the nebulization chamber ( see figure 6). This circular part has the function of retaining the largest particles of nebulized liquid so that they form large drops, relative to the particles of nebulized liquid, which fall, under the effect of gravity, into the tank 100 This prevents this form an emulsion which risks piovocating oxidation of the liquid to be nebulized
On observe, en figure 12 une variante 26 de forme de l'ajutage 25 (voir figures 1 à 4) Dans cette variante, l'ouverture de l'ajutage 25 présente une foi me qui non plane, est formée par l'intersection du cylindre du conduit d'amenée de liquide 70 et d'un cylindre entourant l'ajutage du conduit d'amenée d'air sous piession 10, ayant pour axe le conduit d'amenée d'an sous pression L'inventeur a remarqué que cette forme particulière 26 permet un bon rendement de la buse de nebulisation 61 à 64 On pourra prévoir toute autre forme par exemple une forme triangulaireOne observes, in FIG. 12, a variant 26 of the shape of the nozzle 25 (see FIGS. 1 to 4). In this variant, the opening of the nozzle 25 presents a faith that is not planar, is formed by the intersection cylinder of the liquid supply pipe 70 and of a cylinder surrounding the nozzle of the air supply pipe under pressure 10, having as its axis the supply pipe of pressure year The inventor noticed that this particular shape 26 allows good performance of the nebulization nozzle 61 to 64 We can provide any other shape for example a triangular shape
Le dispositif tel que décrit seia avantageusement dispose dans un coffiet de protection compartimenté tel que représenté en figures 13 et 14 Comme on peut le voir, ce coffret comporte une trappe d'obturation avec serrure. Un des compartiments du coffret sera prévu pour recevoir le dispositif selon l'invention et l'un des autres compartiments sera prévu pour recevoir le compresseur d'air comprimé. La sortie d'air comprimé du compresseur sera reliée par une conduite souple ou rigide à un embout femelle fixé dans le premier compartiment et prévu pour recevoir l'embout femelle de la coiffe du dispositif de nebulisation. Un autre compartiment sera prévu pour recevoir l'électronique du dispositif.The device as described advantageously is arranged in a compartmentalized protective box as shown in FIGS. 13 and 14 As can be seen, this box includes a shutter hatch with lock. One of the compartments of the box will be provided to receive the device according to the invention and one of the other compartments will be provided to receive the compressed air compressor. The compressed air outlet of the compressor will be connected by a flexible or rigid pipe to a female end piece fixed in the first compartment and designed to receive the female end piece of the cap of the nebulization device. Another compartment will be provided to receive the electronics of the device.
Préférentiellement, pour une immobilisation du dispositif dans le coffret sans altérer la possibilité d'amovibilité du dispositif, ce dernier est équipé d'un levier de blocage destiné à coopérer par pivotement avec deux plots d'ancrage fixés dans le premier compartiment. II va de soi que la présente invention peut recevoir tous aménagements et variantes du domaine des équivalents techniques sans pour autant sortir du cadre du présent brevet Preferably, for immobilization of the device in the box without altering the possibility of the device being removable, the latter is equipped with a blocking lever intended to cooperate by pivoting with two anchoring studs fixed in the first compartment. It goes without saying that the present invention can receive all arrangements and variants in the field of technical equivalents without departing from the scope of this patent.

Claims

11 11
REVENDICATIONS
1 - Buse (61 à 65, 160) de nebulisation comportant un conduit d'amenée de liquide (20, 85, 120) et un conduit d'arrivée d'air sous pression (10, 110), les deux conduits présentant chacun au moins un ajutage débouchant vers une zone de nebulisation (30, 130) dans laquelle l'air sous pression Issue du conduit d'arrivée d'air nébulisé le liquide issu du conduit d'amenée de liquide, caractérisée en ce qu'elle comporte un moyen de réglage (70, 170) de la position relative de l'ajutage (25, 125) du conduit d'amenée de liquide par rapport à l'ajutage (15, 115) du conduit d'arrivée d'air sous pression1 - Nebulization nozzle (61 to 65, 160) comprising a liquid supply pipe (20, 85, 120) and a pressurized air supply pipe (10, 110), the two pipes each having at minus a nozzle leading to a nebulization zone (30, 130) in which the pressurized air Comes from the nebulized air inlet pipe the liquid coming from the liquid supply pipe, characterized in that it comprises a means for adjusting (70, 170) the relative position of the nozzle (25, 125) of the liquid supply pipe with respect to the nozzle (15, 115) of the pressurized air supply pipe
2 - Buse selon la revendication 1, caractérisée en ce que le moyen de réglage (70, 170) est adapte à régler au moins la position longitudinale de l'ajutage (25, 125) d'arπvée de liquide, le long de l'axe du conduit d'amenée de liquide (20, 85, 120)2 - Nozzle according to claim 1, characterized in that the adjustment means (70, 170) is adapted to adjust at least the longitudinal position of the nozzle (25, 125) of liquid supply, along the axis of the liquid supply duct (20, 85, 120)
3 - Buse selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que l'ajutage d'arrivée de liquide (25) ne présente pas de symétrie de révolution, par rapport à l'axe du conduit d'amenée de liquide (20, 85) et le moyen de réglage (70) est adapté à régler au moins la position angulaire de l'ajutage d'arrivée de liquide, par rapport à l'axe du conduit d'amenée de liquide3 - Nozzle according to any one of claims 1 or 2, characterized in that the liquid inlet nozzle (25) does not have symmetry of revolution, relative to the axis of the liquid supply duct (20, 85) and the adjustment means (70) is adapted to adjust at least the angular position of the liquid inlet nozzle, relative to the axis of the liquid supply duct
4 - Buse selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte un conduit d'arrivée d'air libre (40, 140) présentant un ajutage dans la zone de nebulisation (30, 130) et une ouverture à l'air libre 5 - Buse selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte un évasement conique (75, 175) en aval de la zone de nebulisation (30, 130)4 - Nozzle according to any one of claims 1 to 3, characterized in that it comprises a free air intake duct (40, 140) having a nozzle in the nebulization zone (30, 130) and a opening to the open air 5 - Nozzle according to any one of claims 1 to 3, characterized in that it comprises a conical flare (75, 175) downstream of the nebulization zone (30, 130)
6 - Dispositif de nebulisation (200) comportant une buse (61 à 65, 160) selon l'une quelconque des revendications 1 à 56 - nebulization device (200) comprising a nozzle (61 to 65, 160) according to any one of claims 1 to 5
7 - Dispositif de nebulisation selon la levendication 6, caractérise en ce qu'il comporte, en outre, un diaphragme (80, 180) place en sortie (50, 150) de la zone de nebulisation (30, 130) et adapte a retenir les particules de liquide nébulisées se trouvant dans les parties latérales du flux de particules sortant de la zone de nebulisation7 - Nebulization device according to levendication 6, characterized in that it further comprises a diaphragm (80, 180) placed at the outlet (50, 150) of the nebulization zone (30, 130) and adapted to retain the nebulized liquid particles located in the lateral parts of the particle flow leaving the nebulization zone
8 - Dispositif selon l'une quelconque des revendications 6 ou 7, caractérisé en ce que la buse comporte un conduit d'aspiration d'air (145) présentant un ajutage dans la zone de nebulisation (130) et le dispositif comporte, à une autre ouverture du conduit d'aspiration (142) d'air, un capteur de dépression (230) et un moyen de traitement (240) d'un signal issu dudit capteur et représentatif de la dépression à l'intérieur du conduit d'aspiration8 - Device according to any one of claims 6 or 7, characterized in that the nozzle comprises an air suction duct (145) having a nozzle in the nebulization zone (130) and the device comprises, at a another opening of the air suction pipe (142), a vacuum sensor (230) and a processing means (240) of a signal from said sensor and representative of the vacuum inside the suction pipe
9 - Dispositif selon la revendication 8, caractérisé en ce que le moyen de traitement du signal (240) est adapté à générer une alarme, sonore, visuelle ou transmise a distance, ou à provoquer l'arrêt d'alimentation électrique d'un compresseur d'air fournissant de l'air sous pression à la buse9 - Device according to claim 8, characterized in that the signal processing means (240) is adapted to generate an alarm, sound, visual or transmitted remotely, or to cause the power supply to a compressor to stop air supplying pressurized air to the nozzle
10 - Dispositif selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que le conduit d'aspiration (140) comporte, en outre, une ouverture à l'air libre (141) 10 - Device according to any one of claims 8 or 9, characterized in that the suction duct (140) further comprises an opening to the open air (141)
EP04719461A 2003-03-11 2004-03-11 Nebulisation venturi and device comprising the same Expired - Lifetime EP1603683B1 (en)

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FR0303203A FR2852261B1 (en) 2003-03-11 2003-03-11 NOBULIZING NOZZLE AND DEVICE COMPRISING IT
FR0303203 2003-03-11
PCT/EP2004/050294 WO2004080605A1 (en) 2003-03-11 2004-03-11 Nebulisation venturi and device comprising the same

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FR2852261A1 (en) 2004-09-17
US20060219814A1 (en) 2006-10-05
CN100450634C (en) 2009-01-14
KR20050114233A (en) 2005-12-05
WO2004080605A1 (en) 2004-09-23
DE602004025453D1 (en) 2010-03-25
CA2518244C (en) 2010-06-01
AU2004218942A1 (en) 2004-09-23
CA2518244A1 (en) 2004-09-23
JP2006519691A (en) 2006-08-31
MXPA05009812A (en) 2006-05-31
EP1603683B1 (en) 2010-02-10
RU2005131428A (en) 2006-06-27
ES2344983T3 (en) 2010-09-13
AU2004218942B2 (en) 2008-07-17
JP4664279B2 (en) 2011-04-06
KR100740924B1 (en) 2007-07-19
ATE457203T1 (en) 2010-02-15
BRPI0408277B1 (en) 2014-04-29
RU2348465C2 (en) 2009-03-10

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