EP2389203A1 - Apparatus for decontamination by atomisation - Google Patents

Apparatus for decontamination by atomisation

Info

Publication number
EP2389203A1
EP2389203A1 EP10704393A EP10704393A EP2389203A1 EP 2389203 A1 EP2389203 A1 EP 2389203A1 EP 10704393 A EP10704393 A EP 10704393A EP 10704393 A EP10704393 A EP 10704393A EP 2389203 A1 EP2389203 A1 EP 2389203A1
Authority
EP
European Patent Office
Prior art keywords
liquid
decontamination device
air flow
tank
sensor
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.)
Withdrawn
Application number
EP10704393A
Other languages
German (de)
French (fr)
Inventor
Frederic Goessens
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.)
Gloster Europe SAS
Original Assignee
Gloster Europe SAS
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 Gloster Europe SAS filed Critical Gloster Europe SAS
Publication of EP2389203A1 publication Critical patent/EP2389203A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0615—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0669—Excitation frequencies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/25—Rooms in buildings, passenger compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container

Definitions

  • the present invention relates to an apparatus for decontaminating by misting a disinfectant on surfaces to be treated, and especially on the walls and objects of a room.
  • the size of the drops formed is relatively high (of the order of 80 to 200 microns for an air flow rate of 3 to 5 ml of air per minute), so that these drops are deposited by simple gravity effect on the surfaces close to their place of spray, which, of course, is not satisfactory insofar as the surfaces remote from the spray nozzle are free of treatment.
  • REPLACEMENT LEAF (Rule 26) It has been proposed in patent FR 2 859 650 in the name of the applicant, to improve the fractionation of sprayed drops by using an injection device for obtaining fine droplets whose dimensions are of the order of 2 micrometers to 20 microns and thus have the property of being suspended in the entire volume of the room and to be deposited on the walls and objects contained therein without agglomerating them so that they form a continuous film; the fog thus generated being called "dry fog".
  • the injection device is provided with an ultrasonic "resonator" disposed downstream of the outlet of the injector, so that the flow at the outlet thereof is subjected to fragmentation forming a a kind of "diffraction" of the drops, having the effect of making them even smaller, which makes it possible to further increase the homogeneity of their distribution.
  • the Applicant has also proposed in application FR 09.00134 a misting treatment apparatus in which the fragmentation is obtained by using a specific injector comprising a main vein successively consisting of a convergent axial vein intended to receive a flow of pressurized gas , a cylindrical vein, and a diverging axial vein, said injector further comprising at least one secondary vein, substantially transverse, intended to admit a flow of treatment liquid, and which opens downstream of the convergent vein, the axis of the cylindrical vein being angularly offset with respect to the longitudinal axis of the convergent and divergent veins.
  • Such an apparatus thus makes it possible to create in a room to be treated with a large volume, of the order of 200 to 300 m 3 , a "Dry fog" formed from the treatment product, to achieve total eradication of any bacterial germ.
  • the object of the present invention is to propose a treatment apparatus of the same type, in particular intended for the treatment of premises of small volume, of the order of about fifty cubic meters.
  • This apparatus by generating a flow of air arriving at the surface of the treatment liquid at a substantial speed, promotes the entrainment of the microparticles of liquid released by the piezoelectric means and their misting in the atmosphere, and this even with generation means. air flow of little complexity, such as for example a simple fan.
  • the apparatus according to the invention is thus of low weight and volume which makes it easily transportable and easy and quick to implement, in particular without requiring an electrical connection to the mains.
  • the subject of the present invention is thus an apparatus for decontaminating a room by misting a liquid treatment product in the volume thereof, of the type comprising a receiver vessel of said product, means capable of generating in a zone of the surface thereof fine droplets of the product, means capable of forming a air flow able to entrain these fine droplets by mixing with them, means able to inject into the room the mist thus formed, characterized in that the air flow passes through a convergent pipe whose axis is coincides with that of said air flow, this tubing opening near the surface of the liquid product and being inclined relative thereto.
  • the angle of inclination of the convergent tube will be between 20 and 60 ° and will preferably be of the order of 45 ° with respect to the surface of the liquid.
  • the means for forming the air flow may consist of a fan and the means for generating the droplets may consist of a piezoelectric generator disposed in the bottom of the tank.
  • the flow of air at the outlet of the convergent pipe will be directed on the surface of the treatment liquid situated above the piezoelectric generator.
  • the decontamination apparatus may comprise means for controlling the size of the droplets of treatment liquid mixed with the air flow.
  • control means may consist of a substantially vertical cylindrical tubing of a given height, an upstream end of which will be disposed above the zone for generating the droplets of treatment liquid and the downstream end will be provided with an injection nozzle including a convergent pipe.
  • the tank may include means for supplying treatment liquid and at least high and low level sensors of the liquid in the tank which are associated with level control means.
  • the tank may also include at least one sensor for detecting the absence of liquid.
  • the various sensors equipping the device may be provided with protection elements against disturbances generated by the transducer.
  • the supply means may be constituted by a pump, for example a reversible pump, in particular of the peristaltic type.
  • the decontamination device may be provided with electronic means for calculating the flow rate of the process liquid supply means from the measurement of the time required for the said supply means to bring the liquid level of a sensor to a minimum. other sensor. It may also include electronic means for calculating its diffusion rate by measuring the time required for the device so that the level of the liquid to be dispensed goes from a detection position of a higher sensor to a detection position of the sensor. a lower sensor.
  • the apparatus according to the invention may comprise suitable means, particularly at the end of the cycle, to recover by means of said pump, the treatment liquid remaining in the tank to bring it back into a storage tank.
  • FIG. 1 is a vertical cross-sectional view of a following decontamination apparatus The invention
  • FIG. 2 is a partial view in vertical section of the decontamination apparatus shown in FIG. 1;
  • FIG. 3 is a diagrammatic representation of the various circuits forming part of the decontamination apparatus according to the invention,
  • Figure 4 is a partial exploded perspective view of an alternative embodiment of a tank of the apparatus according to the invention.
  • FIG. 1 shows an example of implementation of a decontamination apparatus 1 according to the invention.
  • the apparatus comprises a tank 2 for receiving a treatment liquid 3 that it is desired to distribute in the form of dry mist in the room to be treated.
  • This tank 2 is closed by a lid 2a which preferably makes it watertight, and is provided at its base with a piezoelectric ceramic transducer 4 which, in known manner, is able to vibrate when it is powered at its frequency. resonance by a high frequency generator not shown in the drawing, in particular of the order of 1.8MHz
  • the means for generating the air flow consist of a fan 6 followed by a convergent pipe 18 and a cylindrical pipe 8.
  • the fan 6 is mounted so that such that, when in operation, it sucks the outside air and propels it in the form of a flow of the order of 301 / min through the ducts 18 and 8.
  • the axis xx 'in which the fan 6 propels the air flow merges with the axis of the convergent pipe 18 and the axis of the cylindrical pipe 8.
  • This common axis xx' is inclined at an angle ⁇ relative to at the liquid surface of a value between 20 ° and 60 ° and preferably close to 45 °, so as to be directed on the area of the surface of the liquid 3 which is above the transducer 4 and which, this fact is excited by the vibrations of the latter.
  • L apparatus comprises electronic control means, in particular consisting of a microcontroller 14 which interfaces with a control panel 15 and which is connected to the pump 9, to the fan 6 as well as to means for controlling the existing liquid level in the tank 2.
  • transducer 4 is disposed a 10vertical tubing which terminates at its upper part by a convergent nozzle 12 whose axis yy 'is inclined at an angle ⁇ relative to the surface of the liquid, the bottom of the tank 2.
  • this angle ⁇ is of the order of 45 °.
  • the transducer 4 When the transducer 4 is excited by supplying it with a current at a frequency that is preferably close to its resonant frequency, the latter enters into vibrations and creates a cavitation effect in the treatment liquid generating gaseous bubbles that go burst after their rise to the surface thus forming a fine fog.
  • the air flow generated by the fan 6 has the effect of recovering this fog and driving it mixed with the flow of air, outwards through the pipe 10.
  • the acceleration, in the manifold 18, of the air flow generated by the fan 6 makes it possible to improve the efficiency of driving such a mixture and thus to have a reserve of drive power which will allow to modulate, as described below, the size of the entrained liquid drops.
  • the vertical tubing 10 has the particular function of controlling and limiting the size of the drops projected out of the device. It has indeed been found that by regulating the power of the flow of the air blown by the fan 6 as well as the height h of the tubing 10, it was possible to control the size of the drops at the outlet, insofar as the largest of the these drops fall under the effect of their own weight in the tank 2. In other words, the designer of the apparatus according to the invention has the possibility, by adjusting the power of the fan 6 and the height h of the tubing 10 , to control the size of the drops at the output of the device.
  • the level control means comprise two sensors, namely a low level detection sensor 17 and a high level detection sensor 19 which leave the lid 2a of the tank 2 and which are extend vertically downwards towards the bottom of the latter and stop at a distance from the latter respectively equal to the low level and to the high level.
  • the sensors 17 and 19 are connected to the microcontroller 14 which controls the filling of the tank 2 when the level of the treatment liquid goes down to the low level and the stoppage of the filling when the liquid reaches the high level.
  • the level detectors are up and down so that the height of water above the transducer 4 remains between 15 mm and 21 mm.
  • the apparatus comprises a third sensor 20 disposed at the bottom of the tank 2, so that it is able to detect any absence of liquid therein. . It will be referred to hereinafter as a zero level sensor.
  • the three sensors are associated with electronic management means, for example the microcontroller 14, making it possible firstly to determine at the beginning of the cycle the actual flow pi of the pump 9 and, secondly, to measure, in progress operation of the device, the diffusion rate p2, that is to say the flow of the treatment liquid actually diffused into the room.
  • electronic management means for example the microcontroller 14, making it possible firstly to determine at the beginning of the cycle the actual flow pi of the pump 9 and, secondly, to measure, in progress operation of the device, the diffusion rate p2, that is to say the flow of the treatment liquid actually diffused into the room.
  • the microcontroller 14 measures the time tl necessary for the pump 9 to fill the volume Vl of the tank 2 between the low and high levels with liquid.
  • the microcontroller 14 controls the interruption of the operation of the pump 9 as soon as the liquid level reaches the top sensor 19 to control the recovery of the latter as soon as the bottom sensor 17 is no longer immersed.
  • the overall operating time T thus consists of the sum of the different operating times of the pump between the high and low levels.
  • the tank 2 will be sealed which will allow the user to easily move the device without risking leakage outside thereof.
  • the microcontroller can, at the end of the cycle, control the recovery of the treatment liquid remaining in the tank 2, that is to say the liquid remaining between the sensor. level 17 and the zero level sensor, to bring it back into the cartridge 13.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Nozzles (AREA)
  • Special Spraying Apparatus (AREA)

Abstract

The invention relates to an apparatus for decontaminating premises by the atomisation of a liquid treatment product (3) in the volume thereof, comprising a receiving tank (2) for said product (3), means (4) capable of generating fine droplets of the product (3) in an area of the surface thereof, means (6) capable of generating an air flow for driving said fine droplets while mixing with them, and means (10, 12) adapted for injecting into the premises the mist thus formed. The apparatus is characterised in that the air flow flows through a convergent tubing (18) having an axis (xx') identical with that of the air flow, the tubing opening in the vicinity of the surface of the liquid product (3) and being inclined at an angle (β) relative thereto.

Description

Appareil de décontamination par brumisation Misting decontamination apparatus
La présente invention concerne un appareil de décontamination par brumisation d'un produit de désinfection sur des surfaces à traiter, et notamment' sur les parois et objets d'un local.The present invention relates to an apparatus for decontaminating by misting a disinfectant on surfaces to be treated, and especially on the walls and objects of a room.
On sait que les agents bactériens qui sont la cause de la contamination et qui sont en suspension dans l'air d'un local ont tendance à se sédimenter sur les différentes surfaces et objets contenus dans celui-ci. On sait par ailleurs, qu'à l'inverse, les agents bactériens qui se développent sur les objets et sur les parois d'un local, (par exemple des salles d'opération, des salles blanches ou de soins divers etc..) ont tendance à entrer en suspension dans l'atmosphère. Ces locaux se trouvent ainsi dans une situation d'échange permanent entre les parois et objets d'une part et l'atmosphère d'autre part.It is known that the bacterial agents that cause the contamination and are suspended in the air of a room tend to sediment on the various surfaces and objects contained therein. We also know that, conversely, bacterial agents that develop on the objects and on the walls of a room, (for example operating rooms, clean rooms or various care etc. ..) tend to suspend in the atmosphere. These premises are thus in a situation of permanent exchange between the walls and objects on the one hand and the atmosphere on the other hand.
On a proposé d'assurer la décontamination globale, c'est-à- dire à la fois de l'atmosphère et des parois et objets divers d'un local, en pulvérisant dans le volume de celui-ci un produit désinfectant. On a constaté que ce type de traitement par projection présentait plusieurs inconvénients.It has been proposed to ensure the overall decontamination, that is to say of both the atmosphere and the walls and various objects of a room, by spraying in the volume of the latter a disinfectant product. This type of projection treatment has been found to have several disadvantages.
De première part, la taille des gouttes formées est relativement élevée (de l'ordre de 80 à 200 μm pour un débit d'air de 3 à 5 ml d'air par minute), si bien que ces gouttes viennent se déposer par simple effet de gravité sur les surfaces proches de leur lieu de pulvérisation, ce qui, bien entendu, n'est pas satisfaisant dans la mesure où les surfaces éloignées de l'injecteur de pulvérisation se trouvent exemptes de traitement .Firstly, the size of the drops formed is relatively high (of the order of 80 to 200 microns for an air flow rate of 3 to 5 ml of air per minute), so that these drops are deposited by simple gravity effect on the surfaces close to their place of spray, which, of course, is not satisfactory insofar as the surfaces remote from the spray nozzle are free of treatment.
De seconde part, en raison notamment de la grosseur des gouttes, celles-ci ont tendance à se regrouper et à former en surface des parois et objets du local un film humide, voire même des flaques de liquide.Secondly, due in particular to the size of the drops, they have a tendency to cluster and form on the surface of the walls and objects of the local a wet film, or even puddles of liquid.
FEUiLLE DE REMPLACEMENT (Règte 26) On a proposé dans le brevet FR 2 859 650 au nom de la demanderesse, d'améliorer le fractionnement des gouttes pulvérisées en faisant appel à un dispositif d'injection permettant d'obtenir de fines gouttelettes dont les dimensions sont de l'ordre de 2 μm à 20 μm et qui présentent ainsi la propriété de se trouver en suspension dans l'ensemble du volume du local et de se déposer sur les parois et les objets contenus dans celui-ci sans s'agglomérer entre-elles si bien qu'elles forment un film continu ; le brouillard ainsi généré étant dénommé « brouillard sec ».REPLACEMENT LEAF (Rule 26) It has been proposed in patent FR 2 859 650 in the name of the applicant, to improve the fractionation of sprayed drops by using an injection device for obtaining fine droplets whose dimensions are of the order of 2 micrometers to 20 microns and thus have the property of being suspended in the entire volume of the room and to be deposited on the walls and objects contained therein without agglomerating them so that they form a continuous film; the fog thus generated being called "dry fog".
Suivant une variante de cette invention le dispositif d'injection est pourvu d'un « résonateur » ultrasonore disposé en aval de la sortie de l'injecteur, de façon que le flux en sortie de celui-ci se trouve soumis à une fragmentation formant une sorte de « diffraction » des gouttes, ayant pour effet de les rendre encore plus petites ce qui permet d'augmenter encore l'homogénéité de leur distribution.According to a variant of this invention the injection device is provided with an ultrasonic "resonator" disposed downstream of the outlet of the injector, so that the flow at the outlet thereof is subjected to fragmentation forming a a kind of "diffraction" of the drops, having the effect of making them even smaller, which makes it possible to further increase the homogeneity of their distribution.
La demanderesse a également proposé dans la demande FR 09.00134 un appareil de traitement par brumisation dans lequel la fragmentation est obtenue en faisant appel à un injecteur spécifique comportant une veine principale successivement constituée d'une veine axiale convergente destinée à recevoir un flux de gaz sous pression, une veine cylindrique, et une veine axiale divergente, ledit injecteur comportant par ailleurs au moins une veine secondaire, sensiblement transversale, destinée à admettre un flux de liquide de traitement, et qui débouche en aval de la veine convergente, l'axe de la veine cylindrique étant décalé angulairement par rapport à l'axe longitudinal des veines convergente et divergente.The Applicant has also proposed in application FR 09.00134 a misting treatment apparatus in which the fragmentation is obtained by using a specific injector comprising a main vein successively consisting of a convergent axial vein intended to receive a flow of pressurized gas , a cylindrical vein, and a diverging axial vein, said injector further comprising at least one secondary vein, substantially transverse, intended to admit a flow of treatment liquid, and which opens downstream of the convergent vein, the axis of the cylindrical vein being angularly offset with respect to the longitudinal axis of the convergent and divergent veins.
Un tel appareil permet ainsi de créer dans un local à traiter de volume important, de l'ordre de 200 à 300 m3, un « brouillard sec » constitué à partir du produit de traitement, permettant d'atteindre une éradication totale de tout germe bactérien.Such an apparatus thus makes it possible to create in a room to be treated with a large volume, of the order of 200 to 300 m 3 , a "Dry fog" formed from the treatment product, to achieve total eradication of any bacterial germ.
On connaît également par le brevet US 2008/223953 un dispositif de pulvérisation d'un produit de traitement faisant appel à des moyens piézoélectriques pour générer en surface de celui-ci de fines gouttelettes qui sont ensuite entraînées par un flux d'air. On remarquera cependant que, en raison de sa constitution, le flux d'air généré par ce dispositif subit de multiples réflexions avant d'atteindre la surface du liquide ce qui a pour effet de diminuer la vitesse de l'écoulement et d'accroître le bruit généré par l'appareil, et ceci au détriment de la diffusion du liquide de traitement .Also known from US Patent 2008/223953 a device for spraying a treatment product using piezoelectric means for generating on the surface thereof small droplets which are then driven by a flow of air. It should be noted, however, that, due to its constitution, the air flow generated by this device undergoes multiple reflections before reaching the liquid surface which has the effect of reducing the flow velocity and increasing the flow rate. noise generated by the device, and this to the detriment of the diffusion of the treatment liquid.
La présente invention a pour but de proposer un appareil de traitement de même type, notamment destiné au traitement de locaux de faible volume, de l'ordre d'une cinquantaine de mètres cubes. Cet appareil en générant un flux d'air arrivant sur la surface du liquide de traitement à une vitesse conséquente favorise l'entraînement des microparticules de liquide libérées par les moyens piézoélectriques et leur brumisation dans l'atmosphère, et ceci même avec des moyens de génération du flux d' air peu complexes, tels que par exemple un simple ventilateur.The object of the present invention is to propose a treatment apparatus of the same type, in particular intended for the treatment of premises of small volume, of the order of about fifty cubic meters. This apparatus, by generating a flow of air arriving at the surface of the treatment liquid at a substantial speed, promotes the entrainment of the microparticles of liquid released by the piezoelectric means and their misting in the atmosphere, and this even with generation means. air flow of little complexity, such as for example a simple fan.
L'appareil suivant l'invention est ainsi de faible poids et volume ce qui le rend facilement transportable et facile et rapide à mettre en oeuvre, notamment sans nécessiter un raccordement électrique au secteur.The apparatus according to the invention is thus of low weight and volume which makes it easily transportable and easy and quick to implement, in particular without requiring an electrical connection to the mains.
La présente invention a ainsi pour objet un appareil de décontamination d'un local par brumisation d'un produit liquide de traitement dans le volume de celui-ci, du type comportant une cuve réceptrice dudit produit, des moyens aptes à générer dans une zone de la surface de celui-ci de fines gouttelettes du produit, des moyens aptes à former un flux d'air en mesure d'entraîner ces fines gouttelettes en se mélangeant à celles-ci, des moyens aptes à injecter dans le local le brouillard ainsi formé, caractérisé en ce que le flux d'air traverse une tubulure convergente dont l'axe est confondu avec celui dudit flux d'air, cette tubulure débouchant à proximité de la surface du produit liquide et étant inclinée par rapport à celle-ci.The subject of the present invention is thus an apparatus for decontaminating a room by misting a liquid treatment product in the volume thereof, of the type comprising a receiver vessel of said product, means capable of generating in a zone of the surface thereof fine droplets of the product, means capable of forming a air flow able to entrain these fine droplets by mixing with them, means able to inject into the room the mist thus formed, characterized in that the air flow passes through a convergent pipe whose axis is coincides with that of said air flow, this tubing opening near the surface of the liquid product and being inclined relative thereto.
L'angle d'inclinaison de la tubulure convergente sera compris entre 20 et 60° et sera préférentiellement de l'ordre de 45° par rapport à la surface du liquide.The angle of inclination of the convergent tube will be between 20 and 60 ° and will preferably be of the order of 45 ° with respect to the surface of the liquid.
Les moyens de formation du flux d' air pourront être constitués d' un ventilateur et les moyens de génération des gouttelettes pourront être constitués d'un générateur piézoélectrique disposé dans le fond de la cuve.The means for forming the air flow may consist of a fan and the means for generating the droplets may consist of a piezoelectric generator disposed in the bottom of the tank.
Préférentiellement le flux d'air en sortie de la tubulure convergente sera dirigé sur la surface du liquide de traitement se trouvant au-dessus du générateur piézoélectrique .Preferably, the flow of air at the outlet of the convergent pipe will be directed on the surface of the treatment liquid situated above the piezoelectric generator.
L'appareil de décontamination suivant l'invention pourra comporter des moyens de contrôle de la grosseur des gouttelettes de liquide de traitement mélangées au flux d'air. Ces moyens de contrôle pourront être constitués d'une tubulure cylindrique sensiblement verticale, d'une hauteur déterminée, dont une extrémité amont sera disposée au-dessus de la zone de génération des gouttelettes de liquide de traitement et l'extrémité aval sera pourvue d'une buse d'injection notamment constituée d'une conduite convergente .The decontamination apparatus according to the invention may comprise means for controlling the size of the droplets of treatment liquid mixed with the air flow. These control means may consist of a substantially vertical cylindrical tubing of a given height, an upstream end of which will be disposed above the zone for generating the droplets of treatment liquid and the downstream end will be provided with an injection nozzle including a convergent pipe.
La cuve pourra comporter des moyens d'alimentation en liquide de traitement ainsi qu'au moins des capteurs de niveau haut et bas du liquide dans la cuve qui sont associés à des moyens de contrôle des niveaux. Par ailleurs la cuve pourra également comporter au moins un capteur de détection d'absence de liquide. Les différents capteurs équipant l'appareil pourront être pourvus d'éléments de protection contre les perturbations engendrées par le transducteur.The tank may include means for supplying treatment liquid and at least high and low level sensors of the liquid in the tank which are associated with level control means. In addition, the tank may also include at least one sensor for detecting the absence of liquid. The various sensors equipping the device may be provided with protection elements against disturbances generated by the transducer.
Les moyens d'alimentation pourront être constitués d'une pompe, par exemple une pompe réversible, notamment de type péristaltique .The supply means may be constituted by a pump, for example a reversible pump, in particular of the peristaltic type.
L'appareil de décontamination pourra être pourvu de moyens électroniques de calcul du débit des moyens d' alimentation en liquide de traitement à partir de la mesure du temps nécessaire aux dits moyens d'alimentation pour amener le niveau de liquide d'un capteur à un autre capteur. Il pourra également comporter des moyens électroniques de calcul de son débit de diffusion par la mesure du temps nécessaire à l'appareil pour que le niveau du liquide à distribuer passe d'une position de détection d'un capteur supérieur à une position de détection d'un capteur inférieur.The decontamination device may be provided with electronic means for calculating the flow rate of the process liquid supply means from the measurement of the time required for the said supply means to bring the liquid level of a sensor to a minimum. other sensor. It may also include electronic means for calculating its diffusion rate by measuring the time required for the device so that the level of the liquid to be dispensed goes from a detection position of a higher sensor to a detection position of the sensor. a lower sensor.
Enfin, l'appareil suivant l'invention pourra comporter des moyens aptes, notamment en fin de cycle, à récupérer au moyen de ladite pompe, le liquide de traitement restant dans la cuve pour le ramener dans un bac de stockage.Finally, the apparatus according to the invention may comprise suitable means, particularly at the end of the cycle, to recover by means of said pump, the treatment liquid remaining in the tank to bring it back into a storage tank.
On décrira ci-après, à titre d'exemple non limitatif, une forme d' exécution de la présente invention, en référence au dessin annexé sur lequel : la figure 1 est une vue en coupe verticale et transversale d'un appareil de décontamination suivant 1' invention,An embodiment of the present invention will be described hereinafter by way of nonlimiting example, with reference to the appended drawing, in which: FIG. 1 is a vertical cross-sectional view of a following decontamination apparatus The invention,
- la figure 2 est une vue partielle en coupe verticale de l'appareil de décontamination représenté sur la figure 1, la figure 3 est une représentation sous forme schématique des différents circuits entrant dans la constitution de l'appareil de décontamination suivant 1' invention, la figure 4 est une vue partielle éclatée en perspective d'une variante de réalisation d'une cuve de l'appareil suivant l'invention.FIG. 2 is a partial view in vertical section of the decontamination apparatus shown in FIG. 1; FIG. 3 is a diagrammatic representation of the various circuits forming part of the decontamination apparatus according to the invention, Figure 4 is a partial exploded perspective view of an alternative embodiment of a tank of the apparatus according to the invention.
On a représenté sur la figure 1 un exemple de mise en oeuvre d'un appareil de décontamination 1 suivant 1' invention.FIG. 1 shows an example of implementation of a decontamination apparatus 1 according to the invention.
Sur cette figure l'appareil comprend une cuve 2 destinée à recevoir un liquide de traitement 3 que l'on souhaite distribuer sous forme de brouillard sec dans le local à traiter. Cette cuve 2 est fermée par un couvercle 2a permettant préférentiellement de la rendre étanche, et est pourvue à sa base d'un transducteur à céramique piézoélectrique 4 qui, de façon connue, est apte à entrer en vibration lorsqu' il est alimenté à sa fréquence de résonance par un générateur haute fréquence non représenté sur le dessin, notamment de l'ordre de 1,8MHzIn this figure the apparatus comprises a tank 2 for receiving a treatment liquid 3 that it is desired to distribute in the form of dry mist in the room to be treated. This tank 2 is closed by a lid 2a which preferably makes it watertight, and is provided at its base with a piezoelectric ceramic transducer 4 which, in known manner, is able to vibrate when it is powered at its frequency. resonance by a high frequency generator not shown in the drawing, in particular of the order of 1.8MHz
Dans le présent mode de mise en oeuvre de l'invention les moyens de génération du flux d'air sont constitués d'un ventilateur 6 suivi d'une tubulure convergente 18 et d'un conduit cylindrique 8. Le ventilateur 6 est monté de façon telle que, lorsqu'il est en fonctionnement, il aspire l'air extérieur et le propulse sous forme d'un flux de l'ordre de 301/min à travers les conduits 18 et 8.In the present embodiment of the invention, the means for generating the air flow consist of a fan 6 followed by a convergent pipe 18 and a cylindrical pipe 8. The fan 6 is mounted so that such that, when in operation, it sucks the outside air and propels it in the form of a flow of the order of 301 / min through the ducts 18 and 8.
L'axe xx' suivant lequel le ventilateur 6 propulse le flux d'air se confond avec l'axe de la tubulure convergente 18 et l'axe du conduit cylindrique 8. Cet axe commun xx' est incliné d'un angle β par rapport à la surface du liquide d'une valeur comprise entre 20° et 60° et préférentiellement voisine de 45°, de façon à être dirigé sur la zone de la surface du liquide 3 qui se trouve au- dessus du transducteur 4 et qui, de ce fait, est excitée par les vibrations de ce dernier.The axis xx 'in which the fan 6 propels the air flow merges with the axis of the convergent pipe 18 and the axis of the cylindrical pipe 8. This common axis xx' is inclined at an angle β relative to at the liquid surface of a value between 20 ° and 60 ° and preferably close to 45 °, so as to be directed on the area of the surface of the liquid 3 which is above the transducer 4 and which, this fact is excited by the vibrations of the latter.
Le fond de la cuve 2 est pourvu d' un embout 5 permettant, ainsi que représenté sur la figure 3, de la raccorder par l'intermédiaire d'un tuyau souple 7 à une pompe d'alimentation 9, par exemple une pompe péristaltique réversible, qui est en communication par une conduite 11 avec un réservoir, ou cartouche 13, contenant le produit de traitement 3. L'appareil comprend des moyens électroniques de commande, notamment constitués d'un microcontrôleur 14 qui est interface à un pupitre de commande 15 et qui est relié à la pompe 9, au ventilateur 6 ainsi qu'à des moyens de contrôle du niveau de liquide existant dans la cuve 2.The bottom of the tank 2 is provided with a nozzle 5 allowing, as shown in FIG. connect via a hose 7 to a feed pump 9, for example a reversible peristaltic pump, which is in communication with a pipe 11 with a reservoir, or cartridge 13, containing the treatment product 3. L apparatus comprises electronic control means, in particular consisting of a microcontroller 14 which interfaces with a control panel 15 and which is connected to the pump 9, to the fan 6 as well as to means for controlling the existing liquid level in the tank 2.
Au-dessus du transducteur 4 est disposée une tubulure 10verticale qui se termine à sa partie supérieure par une buse convergente 12 dont l'axe yy' est incliné d'un angle α par rapport à la surface du liquide, soit le fond de la cuve 2. Préférentiellement cet angle α est de l'ordre de 45°.Above the transducer 4 is disposed a 10vertical tubing which terminates at its upper part by a convergent nozzle 12 whose axis yy 'is inclined at an angle α relative to the surface of the liquid, the bottom of the tank 2. Preferably, this angle α is of the order of 45 °.
Dans ces conditions le fonctionnement de l'appareil suivant l'invention s'établit comme suit.Under these conditions the operation of the apparatus according to the invention is established as follows.
Lorsque l'on excite le transducteur 4 en l'alimentant par un courant à une fréquence préférentiellement proche de sa fréquence de résonance, celui-ci entre en vibrations et crée au sein du liquide de traitement un effet de cavitation générant des bulles gazeuses qui vont éclater après leur remontée à la surface formant ainsi un fin brouillard. Le flux d'air généré par le ventilateur 6 a pour effet de récupérer ce brouillard et de l'entraîner mélangé au flux d'air, vers l'extérieur par la tubulure 10.When the transducer 4 is excited by supplying it with a current at a frequency that is preferably close to its resonant frequency, the latter enters into vibrations and creates a cavitation effect in the treatment liquid generating gaseous bubbles that go burst after their rise to the surface thus forming a fine fog. The air flow generated by the fan 6 has the effect of recovering this fog and driving it mixed with the flow of air, outwards through the pipe 10.
L'accélération, dans la tubulure 18, du flux d'air généré par le ventilateur 6 permet d'améliorer l'efficacité de l'entraînement d'un tel mélange et de disposer ainsi d'une réserve de puissance d'entraînement qui permettra de moduler, ainsi que décrit ci-après, la grosseur des gouttes de liquide entraînées.The acceleration, in the manifold 18, of the air flow generated by the fan 6 makes it possible to improve the efficiency of driving such a mixture and thus to have a reserve of drive power which will allow to modulate, as described below, the size of the entrained liquid drops.
On a remarqué en effet qu'un brouillard ainsi formé comporte à la fois des microgouttes et des gouttes plus grosses. Il est donc nécessaire d'éliminer ces dernières qui auraient, si elles étaient conservées, un effet mouillant que l'on souhaite éviter pour ce type d'application. La tubulure verticale 10 a notamment pour fonction de contrôler et limiter la grosseur des gouttes projetées hors de l'appareil. On a en effet constaté qu'en réglant la puisssance du flux de l'air soufflé par le ventilateur 6 ainsi que la hauteur h de la tubulure 10, on pouvait contrôler la dimension des gouttes en sortie, dans la mesure où les plus grosses de ces gouttes retombent sous l'effet de leur propre poids dans la cuve 2. Autrement dit, le concepteur de l'appareil suivant l'invention a la possibilité, en jouant sur la puissance du ventilateur 6 et sur la hauteur h de la tubulure 10, de contrôler la grosseur des gouttes en sortie de l'appareil.It has been observed that a mist thus formed comprises both microdrops and drops more large. It is therefore necessary to eliminate the latter which would, if they were preserved, a wetting effect that it is desired to avoid for this type of application. The vertical tubing 10 has the particular function of controlling and limiting the size of the drops projected out of the device. It has indeed been found that by regulating the power of the flow of the air blown by the fan 6 as well as the height h of the tubing 10, it was possible to control the size of the drops at the outlet, insofar as the largest of the these drops fall under the effect of their own weight in the tank 2. In other words, the designer of the apparatus according to the invention has the possibility, by adjusting the power of the fan 6 and the height h of the tubing 10 , to control the size of the drops at the output of the device.
On a constaté par ailleurs qu'en donnant à la buse de sortie 12 disposée dans le prolongement de la tubulure 10 une forme convergente on améliore la qualité du jet de sortie en évitant les tourbillons, ce qui permet de former un brouillard plus dense.It has furthermore been found that by giving the outlet nozzle 12 arranged in the extension of the tubing 10 a convergent shape, the quality of the outlet jet is improved by avoiding the vortices, which makes it possible to form a denser mist.
Les moyens de contrôle de niveau, ainsi que représenté sur la figure 2, comprennent deux capteurs, à savoir un capteur de détection de niveau bas 17 et un capteur de détection de niveau haut 19 qui partent du couvercle 2a de la cuve 2 et qui s'étendent verticalement vers le bas en direction du fond de celle-ci pour s'arrêter à une distance de ce dernier respectivement égale au niveau bas et au niveau haut. Les capteurs 17 et 19 sont réunis au microcontrôleur 14 qui commande le remplissage de la cuve 2 lorsque le niveau du liquide de traitement descend jusqu'au niveau bas et l'arrêt du remplissage lorsque le liquide atteint le niveau haut. Dans le présent mode de mise en oeuvre de l'invention on dispose les détecteurs de niveau haut et bas de façon telle que la hauteur d'eau au-dessus du transducteur 4 reste comprise entre 15 mm et 21 mm.The level control means, as shown in FIG. 2, comprise two sensors, namely a low level detection sensor 17 and a high level detection sensor 19 which leave the lid 2a of the tank 2 and which are extend vertically downwards towards the bottom of the latter and stop at a distance from the latter respectively equal to the low level and to the high level. The sensors 17 and 19 are connected to the microcontroller 14 which controls the filling of the tank 2 when the level of the treatment liquid goes down to the low level and the stoppage of the filling when the liquid reaches the high level. In the present embodiment of the invention, the level detectors are up and down so that the height of water above the transducer 4 remains between 15 mm and 21 mm.
Dans une variante particulièrement intéressante de la présente invention, représentée sur la figure 4, l'appareil comporte un troisième capteur 20 disposé au niveau du fond de la cuve 2, si bien qu'il est apte à détecter toute absence de liquide dans cette dernière. On le désignera ci- après par capteur de niveau zéro.In a particularly advantageous variant of the present invention, represented in FIG. 4, the apparatus comprises a third sensor 20 disposed at the bottom of the tank 2, so that it is able to detect any absence of liquid therein. . It will be referred to hereinafter as a zero level sensor.
Les trois capteurs sont associés à des moyens électroniques de gestion, par exemple le microcontrôleur 14, permettant notamment d'une part de déterminer en début de cycle le débit réel pi de la pompe 9 et, d'autre part, de mesurer, en cours de fonctionnement de l'appareil, le débit de diffusion p2, c'est-à-dire le débit du liquide de traitement réellement diffusé dans le local.The three sensors are associated with electronic management means, for example the microcontroller 14, making it possible firstly to determine at the beginning of the cycle the actual flow pi of the pump 9 and, secondly, to measure, in progress operation of the device, the diffusion rate p2, that is to say the flow of the treatment liquid actually diffused into the room.
Pour ce faire, en début de cycle, le microcontrôleur 14 mesure le temps tl nécessaire pour que la pompe 9 ait rempli de liquide le volume Vl de la cuve 2 compris entre les niveaux bas et haut. Le débit réel pi de la pompe 9 est ainsi : pl=Vl/tl.To do this, at the beginning of the cycle, the microcontroller 14 measures the time tl necessary for the pump 9 to fill the volume Vl of the tank 2 between the low and high levels with liquid. The actual flow pi of the pump 9 is thus: pl = Vl / tl.
Par ailleurs, au moyen du pupitre de commande 15 l'utilisateur a la possibilité de saisir le volume Vd qu'il souhaite brumiser dans le local au cours d'un cycle de traitement, si bien que le microcontrôleur 14 est alors en mesure de calculer le temps T de fonctionnement de la pompe 9 nécessaire pour qu'elle amène dans la cuve 2 ce volume Vd de produit de traitement, soit T=Vd/pl. Le temps T une fois écoulé, le microcontrôleur 14 commande l'arrêt définitif de la pompe 9 pour ce cycle de traitement, et la brumisation continue jusqu'à ce que le capteur de niveau zéro détecte le vidage complet de la cuve 2, ce qui marque la fin du cycle de traitement.Moreover, by means of the control panel 15 the user has the possibility of entering the volume Vd that he wishes to mist in the room during a treatment cycle, so that the microcontroller 14 is then able to calculate the time T of operation of the pump 9 necessary for it to bring into the tank 2 this volume Vd of treatment product, ie T = Vd / pl. After the time T, the microcontroller 14 commands the final shutdown of the pump 9 for this treatment cycle, and the fogging continues until the zero level sensor detects the complete emptying of the tank 2, which marks the end of the treatment cycle.
En cours d' un cycle de traitement on comprend que le microcontrôleur 14 commande l'interruption du fonctionnement de la pompe 9 dès que le niveau de liquide atteint le capteur haut 19 pour commander la reprise de celui-ci dès que le capteur bas 17 n'est plus immergé. Le temps de fonctionnement global T est ainsi constitué de la somme des différents temps de fonctionnement de la pompe entre les niveaux haut et bas.During a processing cycle it is understood that the microcontroller 14 controls the interruption of the operation of the pump 9 as soon as the liquid level reaches the top sensor 19 to control the recovery of the latter as soon as the bottom sensor 17 is no longer immersed. The overall operating time T thus consists of the sum of the different operating times of the pump between the high and low levels.
De plus, en cours de fonctionnement, le microcontrôleur 14 est en mesure de compter le temps t2 qui s'écoule entre l'instant où le liquide est au niveau haut (détection du capteur 17) et celui où il se trouve au niveau bas (détection du capteur 19) , ce qui correspond à la brumisation d'un volume V2 de liquide égal à celui compris entre les deux capteurs. Il est ainsi en mesure de déterminer le débit de diffusion p2, soit le débit du liquide utilisé p2=V2/t2. Si celui-ci s'avère insuffisant une programmation appropriée du microcontrôleur permet alors à celui-ci d'intervenir afin de l'augmenter par exemple en augmentant la tension d'alimentation du transducteur piézoélectrique 4.In addition, during operation, the microcontroller 14 is able to count the time t 2 which flows between the moment when the liquid is at the high level (detection of the sensor 17) and that at which it is at the low level ( detection of the sensor 19), which corresponds to the misting of a volume V2 of liquid equal to that between the two sensors. It is thus able to determine the diffusion rate p2, ie the flow rate of the liquid used p2 = V2 / t2. If this is insufficient, appropriate programming of the microcontroller then allows it to intervene to increase it for example by increasing the supply voltage of the piezoelectric transducer 4.
Afin d' éviter aux capteurs d' être gênés par les perturbations générées par les vibration du transducteur 4 ils peuvent, ainsi que représenté sur la figure 4, être protégés par des cloisonnements 21 qui peuvent les entourer sans gêner l'accès au liquide de traitement.In order to avoid the sensors being disturbed by the disturbances generated by the vibrations of the transducer 4, they can, as shown in FIG. 4, be protected by partitions 21 which can surround them without hindering access to the treatment liquid. .
Préférentiellement la cuve 2 sera étanche ce qui permettra à l'utilisateur de déplacer facilement l'appareil sans risquer de fuites à l'extérieur de celui-ci.Preferably the tank 2 will be sealed which will allow the user to easily move the device without risking leakage outside thereof.
Par ailleurs dans la mesure où la pompe 9 est de type réversible le microcontrôleur peut, à la fin du cycle, commander la récupération du liquide de traitement restant dans la cuve 2, c'est-à-dire le liquide restant entre le capteur de nivea'u bas 17 et la capteur de niveau zéro, afin de le ramener dans la cartouche 13. Moreover, insofar as the pump 9 is of the reversible type, the microcontroller can, at the end of the cycle, control the recovery of the treatment liquid remaining in the tank 2, that is to say the liquid remaining between the sensor. level 17 and the zero level sensor, to bring it back into the cartridge 13.

Claims

REVEN D I CAT I ON S REVEN DI CAT I ON S
1. - Appareil de décontamination d'un local par brumisation d'un produit liquide de traitement (3) dans le volume de celui-ci, du type comportant une cuve réceptrice1. - Apparatus for decontaminating a room by misting a liquid treatment product (3) in the volume thereof, of the type comprising a receiving tank
(2) dudit produit (3), des moyens (4) aptes à générer dans une zone de la surface de celui-ci de fines gouttelettes du produit (3), des moyens (6) aptes à former un flux d'air en mesure d' entraîner ces fines gouttelettes en se mélangeant à celles-ci, des moyens (10,12) aptes à injecter dans le local le brouillard ainsi formé, caractérisé en ce que le flux d'air traverse une tubulure convergente (18) dont l'axe (xx' ) est confondu avec celui dudit flux d'air, cette tubulure débouchant à proximité de la surface du produit liquide (3) et étant inclinée d'un angle (β) par rapport à celle-ci .(2) of said product (3), means (4) capable of generating in a zone of the surface thereof fine droplets of the product (3), means (6) able to form an air stream in able to entrain these fine droplets by mixing with them, means (10, 12) capable of injecting into the room the mist thus formed, characterized in that the air flow passes through a convergent pipe (18) of which the axis (xx ') is coincident with that of said air flow, this tubing opening near the surface of the liquid product (3) and being inclined at an angle (β) relative thereto.
2. - Appareil de décontamination suivant la revendication 1 caractérisé en ce que l'angle d'inclinaison (β) de l'axe de la tubulure convergente (18) par rapport à la surface du liquide est voisin de 45°.2. - Decontamination device according to claim 1 characterized in that the angle of inclination (β) of the axis of the convergent tube (18) relative to the liquid surface is close to 45 °.
3. - Appareil de décontamination suivant l'une des revendications 1 ou 2 caractérisé en ce que les moyens de formation du flux d'air sont constitués d'un ventilateur (6) .3. - Decontamination device according to one of claims 1 or 2 characterized in that the air flow forming means consist of a fan (6).
4. - Appareil de décontamination suivant l'une des revendications précédentes caractérisé en ce que les moyens de génération des gouttelettes sont constitués d'un générateur piézoélectrique (4) .4. - Decontamination device according to one of the preceding claims characterized in that the means for generating the droplets consist of a piezoelectric generator (4).
5. - Appareil de décontamination suivant la revendication 4 caractérisé en ce que le générateur piézoélectrique (4) est disposé dans le fond de la cuve (2) .5. - Decontamination device according to claim 4 characterized in that the piezoelectric generator (4) is disposed in the bottom of the tank (2).
6. - Appareil de décontamination suivant l'une des revendications 4 ou 5 caractérisé en ce que le flux d' air en sortie de la tubulure convergente (18) est dirigé sur la surface du liquide de traitement se trouvant au-dessus du générateur piézoélectrique (4) .6. - decontamination device according to one of claims 4 or 5 characterized in that the air flow at the outlet of the convergent pipe (18) is directed on the surface of the process liquid above the piezoelectric generator (4).
7. - Appareil de décontamination suivant l'une des revendications précédentes caractérisé en ce que qu' il comporte des moyens de contrôle (10) de la grosseur des gouttelettes de liquide de traitement mélangées au flux d'air7. - Decontamination device according to one of the preceding claims characterized in that it comprises means for controlling (10) the size of the treatment liquid droplets mixed with the air flow
8. - Appareil de décontamination suivant la revendication8. - Decontamination apparatus according to claim
7 caractérisé en ce que lesdits moyens de contrôle sont constitués d'une tubulure cylindrique (10) sensiblement verticale, d'une hauteur (h) déterminée, dont une extrémité amont est disposée au-dessus de la zone de génération des gouttelettes de liquide de traitement et l'extrémité aval est pourvue d'une buse d'injection (12) .7 characterized in that said control means consist of a cylindrical pipe (10) substantially vertical, a height (h) determined, an upstream end is disposed above the zone of generation of liquid droplets of treatment and the downstream end is provided with an injection nozzle (12).
9. - Appareil de décontamination suivant la revendication9. - Decontamination device according to claim
8 caractérisé en ce que la buse d'injection est constituée d'une conduite convergente (12) .8 characterized in that the injection nozzle consists of a convergent conduit (12).
10. - Appareil de décontamination suivant l'une des revendications précédentes caractérisé en ce que la cuve (2) comporte des moyens d'alimentation (9) en liquide de traitement (3) ainsi qu'au moins des capteurs de niveau haut (19) et bas (17) du liquide dans la cuve (2) qui sont associés à des moyens (14) de contrôle des niveaux.10. - Decontamination device according to one of the preceding claims characterized in that the vessel (2) comprises supply means (9) of treatment liquid (3) and at least high level sensors (19). ) and bottom (17) of the liquid in the tank (2) which are associated with means (14) for controlling the levels.
11. - Appareil de décontamination suivant la revendication 10 caractérisé en ce que la cuve comporte un capteur (20) de détection d'absence de liquide.11. - Decontamination device according to claim 10 characterized in that the vessel comprises a sensor (20) of detection of absence of liquid.
12. - Appareil de décontamination suivant la revendication 10 caractérisé en ce que les capteurs (17,19,20) sont pourvus d'éléments de protection (21) contre les perturbations engendrées par les moyens aptes à générer de fines gouttelettes.12. - Decontamination device according to claim 10 characterized in that the sensors (17,19,20) are provided with protection elements (21) against the disturbances generated by the means capable of generating fine droplets.
13. - Appareil de décontamination suivant l'une des revendications 10 à 12 caractérisé en ce que les moyens d'alimentation sont constitués d'une pompe (9), par exemple une pompe réversible, notamment de type péristaltique .13. - decontamination device according to one of claims 10 to 12 characterized in that the means supply are constituted by a pump (9), for example a reversible pump, in particular of the peristaltic type.
14. - Appareil de décontamination suivant l'une des revendications 10 à 13 caractérisé en ce qu'il comporte des moyens électroniques de calcul (14) du débit (pi) des moyens d'alimentation (9) en liquide de traitement à partir de la mesure du temps (tl) nécessaire aux dits moyens d'alimentation pour amener le niveau de liquide d'un capteur à un autre capteur.14. - Decontamination device according to one of claims 10 to 13 characterized in that it comprises electronic means (14) for calculating the flow (pi) of the supply means (9) in the treatment liquid from measuring the time (tl) required for said supply means to bring the liquid level from one sensor to another sensor.
15. - Appareil de décontamination suivant l'une des revendications 10 à 14 caractérisé en ce qu'il comporte des moyens électroniques de calcul (14) de son débit de diffusion (p2) par la mesure du temps (t2) nécessaire à l'appareil pour que le niveau du liquide à distribuer passe d'une position de détection d'un capteur supérieur à une position de détection d'un capteur inférieur.15. - decontamination device according to one of claims 10 to 14 characterized in that it comprises electronic means for calculating (14) its diffusion rate (p2) by measuring the time (t2) necessary for the apparatus for dispensing the level of the liquid to be dispensed from a detection position of a larger sensor to a detection position of a lower sensor.
16.- Appareil de décontamination suivant l'une des revendications 13 à 15 caractérisé en ce qu' il comporte des moyens aptes, notamment en fin de cycle, à récupérer au moyen de ladite pompe (9), le liquide de traitement restant dans la cuve (2) pour le ramener dans un bac de stockage. 16.- decontamination device according to one of claims 13 to 15 characterized in that it comprises means adapted, particularly at the end of the cycle, recovering by means of said pump (9), the treatment liquid remaining in the tank (2) to bring it back into a storage tank.
EP10704393A 2009-01-23 2010-01-22 Apparatus for decontamination by atomisation Withdrawn EP2389203A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0900302A FR2941378A1 (en) 2009-01-23 2009-01-23 APPARATUS FOR DECONTAMINATION BY FOGGING
PCT/FR2010/000057 WO2010084270A1 (en) 2009-01-23 2010-01-22 Apparatus for decontamination by atomisation

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EP2389203A1 true EP2389203A1 (en) 2011-11-30

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US (1) US20110280767A1 (en)
EP (1) EP2389203A1 (en)
JP (1) JP2012515589A (en)
CN (1) CN102307599A (en)
AU (1) AU2010207669A1 (en)
BR (2) BRPI1007039A2 (en)
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RU2011135044A (en) 2013-02-27
WO2010084270A1 (en) 2010-07-29
FR2941378A1 (en) 2010-07-30
JP2012515589A (en) 2012-07-12
MX2011007840A (en) 2011-12-08
CN102307599A (en) 2012-01-04
CA2750614A1 (en) 2010-07-29
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US20110280767A1 (en) 2011-11-17
BRPI1007439A2 (en) 2017-06-06

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