WO2009080902A1 - Method and apparatus for diffusion of a liquid product by atomization in the air - Google Patents

Method and apparatus for diffusion of a liquid product by atomization in the air Download PDF

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Publication number
WO2009080902A1
WO2009080902A1 PCT/FR2007/052603 FR2007052603W WO2009080902A1 WO 2009080902 A1 WO2009080902 A1 WO 2009080902A1 FR 2007052603 W FR2007052603 W FR 2007052603W WO 2009080902 A1 WO2009080902 A1 WO 2009080902A1
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WO
WIPO (PCT)
Prior art keywords
air
nozzle
liquid product
chamber
central
Prior art date
Application number
PCT/FR2007/052603
Other languages
French (fr)
Inventor
Calogero Alfano
Original Assignee
Genevois, Christophe
Marinelli, David
Zambito, Baldassare
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 Genevois, Christophe, Marinelli, David, Zambito, Baldassare filed Critical Genevois, Christophe
Priority to PCT/FR2007/052603 priority Critical patent/WO2009080902A1/en
Publication of WO2009080902A1 publication Critical patent/WO2009080902A1/en

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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
    • 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
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • 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
    • B05B7/2489—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 an atomising fluid, e.g. a gas, being supplied to the discharge device
    • 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
    • B05B7/24—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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2429—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together after discharge

Definitions

  • the invention relates to a method and an apparatus for diffusing a liquid product by atomization in air, in particular for disinfection or disinsectisation.
  • spraying a liquid product directly onto the surfaces to be treated is practiced. This is done manually using a sprayer. It mobilizes an operator for the duration of the operation. It is found that some surfaces masked with respect to the direct spray jet are difficult to reach. In addition, the operator may be exposed to the effects of the product.
  • Document JP 3-162862 A also discloses a disinfection system in which a mist is created from a liquid product reservoir by means of an ultrasonic transducer. The fog thus created is driven into the room to be treated by drafts generated by fans.
  • the aim of the invention is to provide a method and an apparatus for diffusing a liquid product by atomization in the air making it possible to reach the surfaces of a room with the liquid product, with a simple implementation and allowing the construction to take place. a compact device.
  • the subject of the invention is a method for diffusing a liquid product by atomization in air, according to which the liquid product is atomized into fine droplets suspended in the air to form a mist, and the fog is dispersed in a volume to be treated. A swirling air movement is created in the fog to disperse it.
  • the inventor has noted that with such a method of fog dispersion, very good results are obtained in disinfection, because the liquid product, which can be a disinfectant, reaches all the surfaces of the room in which it is dispersed, even those that are not directly in a path from the broadcast device.
  • the swirling motion makes it possible to set the fog in motion without using external means, which ensures that the moving air mass contains liquid product in suspension.
  • the swirling motion allows a large volume to be scanned not only in the vortex axis, but also radiantly with respect to this axis. It also allows the air to store a large amount of movement that it keeps for a long time to reach the farthest surfaces.
  • Such a method can be implemented continuously in an automatic manner, without human intervention. No operator is thus exposed for a long time to the product during its dispersion.
  • swirling motion we create for example a swirling motion of compressed air in a circular chamber, and the compressed air is allowed to escape through a central orifice of the chamber, located substantially on a nozzle axis, central to the chamber.
  • the swirling motion is initiated in the circular chamber with the compressed air, which movement is preserved when passing through the orifice.
  • the expansion of the compressed air after the passage of the central orifice gives a still greater speed to the swirling motion.
  • the liquid product is introduced into a central zone of the central orifice. It is found that this zone is in depression, which makes it possible to suck the fluid brought in the axis of the orifice.
  • the air speed is very important in this area, the liquid is dispersed in fine droplets, of the order of 5 to 10 microns, to form the fog.
  • the compressed air supply pressure is for example between 2 and 3.5 bar, preferably 3 bar.
  • the supply pressure of the liquid product is the atmospheric pressure. It is thus not necessary to provide specific means to force the flow of liquid product. However, specific means may optionally be provided for accurately measuring or dosing the flow of liquid product.
  • the invention also relates to an apparatus for diffusing a liquid product by atomization in air, implementing the method as described above.
  • Such an apparatus comprises for example an air compressor, a liquid tank, and a nozzle adapted to receive compressed air by the compressor and liquid from the tank, the nozzle creating the fog and the swirling air movement. . Movement Swirl is created with the energy of the compressed air that passes through the nozzle.
  • Such an apparatus is compact in that the energy is supplied via the compressor and distributed through the nozzle, which are space-saving elements.
  • the nozzle comprises a circular chamber connected to the compressor and having a central orifice in communication with the open air.
  • a swirling air movement can thus develop in the chamber and out of it through the central orifice while remaining outside the nozzle.
  • the nozzle comprises at least one channel opening into the circular chamber, the axis of the channel being inclined with respect to a radial plane of the chamber passing through the opening of the channel and containing the axis of the chamber.
  • the compressed air opening into the chamber is oriented in a movement with a circular component. This component then imposes the swirling motion in the chamber.
  • the nozzle comprises a central tube connected to the reservoir and opening at the central orifice. The liquid product can be fed through the central tube to be atomized by the compressed air and diffused in the swirling motion.
  • FIG. 1 is a side view of a device according to the invention placed in a room;
  • Figure 2 is a schematic view of the elements of the apparatus of Figure 1;
  • Figure 3 is a view of a nozzle of the apparatus of Figure 1, in partial section along the line III-III of Figure 4;
  • Figure 4 is a view of the chamber according to the arrow IV of Figure 3;
  • Figure 5 is a sectional view along the line VV of Figure 4.
  • An apparatus 1 implementing the method according to the invention is shown in Figure 1.
  • the apparatus 1 is placed on the floor of a room 2 closed. It diffuses a fog in front of it by a nozzle 10 opening out along a front face 11.
  • the fog is diffused in a swirling motion symbolized schematically by the arrows T.
  • the nozzle 10 is oriented along a nozzle axis B around which the whirlpool is formed.
  • the apparatus 1 contains, as shown diagrammatically in FIG. 2, a compressor 12 for delivering compressed air, a reservoir 13 for containing a liquid product 3, and the nozzle 10 for diffusing the liquid product 3 with the aid of the 'pressurized air.
  • the apparatus 1 comprises an air duct 14 connecting the compressor 12 to the nozzle 10. It also comprises a product duct 15 for supplying the nozzle 10 with liquid product 3.
  • the reservoir 13 comprises a cane 130 dipping inside and out through a plug 131.
  • the nozzle 10 is detailed in Figures 3 to 5. It comprises a body 101 receiving the air ducts 13 and 14 of the product 14.
  • the nozzle 10 comprises a capsule 102 fitted and fixed on the body 101 by a ring 104.
  • the capsule 102 delimits with the body 101 a circular chamber 103 of axis the nozzle axis B.
  • the capsule 102 has a central orifice 1020, centered on the nozzle axis B, and opening into the chamber 103 and outside of the nozzle 10.
  • the body 101 further comprises a central tube 1010 connected to the product line 15 by means not shown.
  • the tube 1010 has an axis coincident with the nozzle axis B, and it passes through the orifice 1020 to protrude slightly from the capsule 102.
  • the body 101 also has three channels 1011 regularly distributed and opening into the chamber 103.
  • Each channel 1011 is inclined relative to the surface 1012 of the body 101 defining the chamber 103.
  • the channel 1011 is inclined at an angle OC between the axis of the channel C and a parallel D to the nozzle axis B, seen in the plane P parallel to the nozzle axis B and which contains the axis of the channel C.
  • plane P is distant from the nozzle axis B.
  • the apparatus 1 is placed on the floor 20 in the room 2 as shown in FIG. 1. It could also be hooked on a wall 21.
  • the tank 13 contains a product 3 liquid having disinfecting properties, such as a solution based on hydrogen peroxide.
  • the compressor 12 provides compressed air at more than 3 bar. The compressed air enters the chamber 103 and creates a swirling motion in the direction of the arrows F2. It then passes into the free space between the tube 1010 and the nozzle orifice 1020, and continues its swirling motion in the room. A vacuum is created at the outlet 10100 of the tube 1010, which draws liquid from the reservoir 13.
  • the liquid product 3 flowing from the tube 1010 is driven by air and atomized into fine droplets.
  • the mist thus formed disperses in the room 2 in a swirling motion, which allows the droplets to maintain a high speed while moving away from the apparatus 1. It can be seen that the product 3 can reach surfaces remote from the device 1, even if these surfaces are difficult to access.

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)

Abstract

In a method for diffusion of a liquid product (3) by atomization in the air, the liquid product (3) is atomized in fine droplets suspended in the air in order to form a mist, and the mist is dispersed within a volume that is to be treated, and a swirling movement of air is created in the mist in order to disperse it. Apparatus for carrying out the method.

Description

Procédé et appareil de diffusion d'un produit liquide par atomisation dans l'air. Method and apparatus for diffusing a liquid product by atomization in air
L'invention concerne un procédé et un appareil de diffusion d'un produit liquide par atomisation dans l'air, en particulier pour la désinfection ou la désinsectisation. Les locaux utilisés dans le domaine de 1' agroalimentaire, pour la transformation ou la préparation des denrées, ont besoin d'être maintenus à de bas niveau de colonisation par des bactéries, des germes ou des insectes. Il en est de même pour des locaux d'hôpitaux ou des salles de soins. Pour cela, en plus d'un lavage fréquent des surfaces qui peuvent être souillées, on utilise des produits traitants, tels que des désinfectants, qu'on répand de manière la plus générale possible. On pratique par exemple la pulvérisation d'un produit liquide directement sur les surfaces à traiter. Cette opération est effectuée manuellement à l'aide d'un pulvérisateur. Elle mobilise un opérateur pour toute la durée de l'opération. On constate que certaines surfaces masquées par rapport au jet direct de pulvérisation sont difficilement atteintes. De plus, l'opérateur peut être exposé aux effets du produit.The invention relates to a method and an apparatus for diffusing a liquid product by atomization in air, in particular for disinfection or disinsectisation. Premises used in the field of agribusiness, for processing or preparation of food, need to be maintained at low levels of colonization by bacteria, germs or insects. It is the same for hospital premises or treatment rooms. For this, in addition to a frequent washing of the surfaces that can be soiled, we use treating products, such as disinfectants, that spread in the most general way possible. For example, spraying a liquid product directly onto the surfaces to be treated is practiced. This is done manually using a sprayer. It mobilizes an operator for the duration of the operation. It is found that some surfaces masked with respect to the direct spray jet are difficult to reach. In addition, the operator may be exposed to the effects of the product.
On connaît aussi par le document JP 3-162862 A un système de désinfection dans lequel un brouillard est créé à partir d'une réserve de produit liquide à l'aide de transducteur ultrasonique . Le brouillard ainsi créé est chassé à l'intérieur du local à traiter par des courants d'air générés par des ventilateurs.Document JP 3-162862 A also discloses a disinfection system in which a mist is created from a liquid product reservoir by means of an ultrasonic transducer. The fog thus created is driven into the room to be treated by drafts generated by fans.
On constate que, du fait de la séparation entre le flux d'air des ventilateurs et le brouillard, les surfaces du local ne sont pas atteintes de manière égale, et même que certaines surfaces ne sont jamais atteintes. De plus, les ventilateurs sont encombrants et ne permettent pas une réalisation compacte de l'appareil.It can be seen that, due to the separation between the air flow of the fans and the fog, the surfaces of the room are not reached equally, and even that some surfaces are never reached. In addition, the fans are bulky and do not not allow a compact implementation of the device.
L' invention vise à fournir un procédé et un appareil de diffusion d'un produit liquide par atomisation dans l'air permettant d'atteindre au mieux les surfaces d'un local avec le produit liquide, de mise en œuvre simple et permettant la construction d'un appareil compact.The aim of the invention is to provide a method and an apparatus for diffusing a liquid product by atomization in the air making it possible to reach the surfaces of a room with the liquid product, with a simple implementation and allowing the construction to take place. a compact device.
Avec ces objectifs en vue, l'invention a pour objet un procédé de diffusion d'un produit liquide par atomisation dans l'air, selon lequel on atomise le produit liquide en fines gouttelettes en suspension dans l'air pour former un brouillard, et on disperse le brouillard dans un volume à traiter. On crée un mouvement d'air tourbillonnaire dans le brouillard pour le disperser.With these objectives in view, the subject of the invention is a method for diffusing a liquid product by atomization in air, according to which the liquid product is atomized into fine droplets suspended in the air to form a mist, and the fog is dispersed in a volume to be treated. A swirling air movement is created in the fog to disperse it.
L'inventeur a constaté qu'avec une telle méthode de dispersion du brouillard, on obtient de très bons résultats en désinfection, car le produit liquide, qui peut être un désinfectant, atteint toutes les surfaces du local dans lequel il est dispersé, même celles qui ne sont pas directement dans une trajectoire en provenance de l'appareil de diffusion. Le mouvement tourbillonnaire permet de mettre en mouvement le brouillard sans faire appel à des moyens extérieurs, ce qui garantit que la masse d'air en mouvement contient du produit liquide en suspension. Le mouvement tourbillonnaire permet de balayer un grand volume non seulement dans l'axe du tourbillon, mais aussi de manière rayonnante par rapport à cet axe. Il permet aussi que l'air emmagasine une quantité de mouvement importante qu' il conserve longtemps afin d'atteindre les surfaces les plus éloignées. Un tel procédé peut être mise en œuvre en continu de manière automatique, sans intervention humaine. Aucun opérateur n'est ainsi exposé longuement au produit pendant sa dispersion.The inventor has noted that with such a method of fog dispersion, very good results are obtained in disinfection, because the liquid product, which can be a disinfectant, reaches all the surfaces of the room in which it is dispersed, even those that are not directly in a path from the broadcast device. The swirling motion makes it possible to set the fog in motion without using external means, which ensures that the moving air mass contains liquid product in suspension. The swirling motion allows a large volume to be scanned not only in the vortex axis, but also radiantly with respect to this axis. It also allows the air to store a large amount of movement that it keeps for a long time to reach the farthest surfaces. Such a method can be implemented continuously in an automatic manner, without human intervention. No operator is thus exposed for a long time to the product during its dispersion.
Pour former le mouvement tourbillonnaire, on crée par exemple un mouvement tourbillonnaire d'air comprimé dans une chambre circulaire, et on laisse l'air comprimé s'échapper par un orifice central de la chambre, situé sensiblement sur un axe de buse, central à la chambre. Le mouvement tourbillonnaire est initié dans la chambre circulaire avec l'air comprimé, lequel mouvement est conservé lors du passage par l'orifice. La détente de l'air comprimé après le passage de l'orifice central donne une plus grande vitesse encore au mouvement tourbillonnaire.To form the swirling motion, we create for example a swirling motion of compressed air in a circular chamber, and the compressed air is allowed to escape through a central orifice of the chamber, located substantially on a nozzle axis, central to the chamber. The swirling motion is initiated in the circular chamber with the compressed air, which movement is preserved when passing through the orifice. The expansion of the compressed air after the passage of the central orifice gives a still greater speed to the swirling motion.
Selon une disposition particulière, on introduit le produit liquide dans une zone centrale de l'orifice central. On constate que cette zone est en dépression, ce qui permet d'aspirer le fluide amené dans l'axe de l'orifice. De plus, la vitesse de l'air étant très importante dans cette zone, le liquide est dispersé en fines gouttelettes, de l'ordre de 5 à 10 μm, pour former le brouillard.According to a particular arrangement, the liquid product is introduced into a central zone of the central orifice. It is found that this zone is in depression, which makes it possible to suck the fluid brought in the axis of the orifice. In addition, the air speed is very important in this area, the liquid is dispersed in fine droplets, of the order of 5 to 10 microns, to form the fog.
La pression d'alimentation en air comprimé est par exemple comprise entre 2 et 3,5 bar, de préférence 3 bar.The compressed air supply pressure is for example between 2 and 3.5 bar, preferably 3 bar.
Dans une configuration particulière, la pression d'alimentation du produit liquide est la pression atmosphérique. Il n'est ainsi pas nécessaire de prévoir de moyens spécifiques pour forcer le débit de produit liquide. Cependant, des moyens spécifiques peuvent être éventuellement prévus pour mesurer ou doser de manière précise le débit de produit liquide.In a particular configuration, the supply pressure of the liquid product is the atmospheric pressure. It is thus not necessary to provide specific means to force the flow of liquid product. However, specific means may optionally be provided for accurately measuring or dosing the flow of liquid product.
L'invention a aussi pour objet un appareil de diffusion d'un produit liquide par atomisation dans l'air, mettant en œuvre le procédé tel que décrit précédemment .The invention also relates to an apparatus for diffusing a liquid product by atomization in air, implementing the method as described above.
Un tel appareil comporte par exemple un compresseur d'air, un réservoir de liquide, et une buse apte à recevoir de l'air comprimé par le compresseur et du liquide depuis le réservoir, la buse créant le brouillard et le mouvement d'air tourbillonnaire. Le mouvement tourbillonnaire est créé avec l'énergie de l'air comprimé qui passe par la buse. Un tel appareil est de réalisation compacte, car l'énergie est fournie par l'intermédiaire du compresseur et distribuée par la buse, qui sont des éléments peu encombrants.Such an apparatus comprises for example an air compressor, a liquid tank, and a nozzle adapted to receive compressed air by the compressor and liquid from the tank, the nozzle creating the fog and the swirling air movement. . Movement Swirl is created with the energy of the compressed air that passes through the nozzle. Such an apparatus is compact in that the energy is supplied via the compressor and distributed through the nozzle, which are space-saving elements.
De manière particulière, la buse comporte une chambre circulaire reliée au compresseur et comportant un orifice central en communication avec l'air libre. Un mouvement d'air tourbillonnaire peut ainsi se développer dans la chambre et sortir de celle-ci par l'orifice central tout en perdurant à l'extérieur de la buse.In particular, the nozzle comprises a circular chamber connected to the compressor and having a central orifice in communication with the open air. A swirling air movement can thus develop in the chamber and out of it through the central orifice while remaining outside the nozzle.
Selon une disposition spécifique, la buse comporte au moins un canal débouchant dans la chambre circulaire, l'axe du canal étant incliné par rapport à un plan radial de la chambre passant par le débouché du canal et contenant l'axe de la chambre. Ainsi, l'air comprimé débouchant dans la chambre est orienté selon un mouvement avec une composante circulaire. Cette composante impose alors le mouvement tourbillonnaire dans la chambre. De manière particulière, la buse comporte un tube central relié au réservoir et débouchant au niveau de l'orifice central. Le produit liquide peut être amené par le tube central pour être atomisé par l'air comprimé et diffusé dans le mouvement tourbillonnaire.According to a specific provision, the nozzle comprises at least one channel opening into the circular chamber, the axis of the channel being inclined with respect to a radial plane of the chamber passing through the opening of the channel and containing the axis of the chamber. Thus, the compressed air opening into the chamber is oriented in a movement with a circular component. This component then imposes the swirling motion in the chamber. In particular, the nozzle comprises a central tube connected to the reservoir and opening at the central orifice. The liquid product can be fed through the central tube to be atomized by the compressed air and diffused in the swirling motion.
L'invention sera mieux comprise et d'autres particularités et avantages apparaîtront à la lecture de la description qui va suivre, la description faisant référence aux dessins annexés parmi lesquels : - la figure 1 est une vue latérale d'un appareil conforme à l'invention placé dans un local ; la figure 2 est une vue schématique des éléments de l'appareil de la figure 1 ; la figure 3 est une vue d'une buse de l'appareil de la figure 1, en coupe partielle selon la ligne III-III de la figure 4 ; la figure 4 est une vue de la chambre selon la flèche IV de la figure 3 ; la figure 5 est une vue en coupe selon la ligne V-V de la figure 4. Un appareil 1 mettant en œuvre le procédé selon l'invention est montré sur la figure 1. L'appareil 1 est posé sur le sol d'un local 2 fermé. Il diffuse un brouillard devant lui par une buse 10 débouchant le long d'une face avant 11. Le brouillard est diffusé dans un mouvement tourbillonnaire symbolisé de manière schématique par les flèches T. La buse 10 est orientée selon un axe de buse B autour duquel le tourbillon se forme .The invention will be better understood and other features and advantages will appear on reading the description which follows, the description referring to the appended drawings among which: - Figure 1 is a side view of a device according to the invention placed in a room; Figure 2 is a schematic view of the elements of the apparatus of Figure 1; Figure 3 is a view of a nozzle of the apparatus of Figure 1, in partial section along the line III-III of Figure 4; Figure 4 is a view of the chamber according to the arrow IV of Figure 3; Figure 5 is a sectional view along the line VV of Figure 4. An apparatus 1 implementing the method according to the invention is shown in Figure 1. The apparatus 1 is placed on the floor of a room 2 closed. It diffuses a fog in front of it by a nozzle 10 opening out along a front face 11. The fog is diffused in a swirling motion symbolized schematically by the arrows T. The nozzle 10 is oriented along a nozzle axis B around which the whirlpool is formed.
L'appareil 1 contient, comme schématisé sur la figure 2, un compresseur 12 pour délivrer de l'air comprimé, un réservoir 13 pour contenir un produit 3 liquide, et la buse 10 pour diffuser le produit 3 liquide avec l'aide de l'air comprimé. L'appareil 1 comporte une canalisation d'air 14 reliant le compresseur 12 à la buse 10. Il comporte également une canalisation de produit 15 pour alimenter la buse 10 en produit 3 liquide. Le réservoir 13 comporte une cane 130 plongeant à l'intérieur et sortant par un bouchon 131.The apparatus 1 contains, as shown diagrammatically in FIG. 2, a compressor 12 for delivering compressed air, a reservoir 13 for containing a liquid product 3, and the nozzle 10 for diffusing the liquid product 3 with the aid of the 'pressurized air. The apparatus 1 comprises an air duct 14 connecting the compressor 12 to the nozzle 10. It also comprises a product duct 15 for supplying the nozzle 10 with liquid product 3. The reservoir 13 comprises a cane 130 dipping inside and out through a plug 131.
La buse 10 est détaillée sur les figures 3 à 5. Elle comporte un corps 101 recevant les canalisations d'air 13 et de produit 14. La buse 10 comporte une capsule 102 emboîtée et fixée sur le corps 101 par une bague 104. La capsule 102 délimite avec le corps 101 une chambre 103 circulaire d'axe l'axe de buse B. La capsule 102 comporte un orifice 1020 central, centré sur l'axe de buse B, et débouchant dans la chambre 103 et à l'extérieur de la buse 10. Le corps 101 comporte en outre un tube 1010 central relié à la canalisation de produit 15 par des moyens non représentés. Le tube 1010 a un axe confondu avec l'axe de buse B, et il traverse l'orifice 1020 pour faire légèrement saillie de la capsule 102. Le corps 101 comporte également trois canaux 1011 répartis régulièrement et débouchant dans la chambre 103. Chaque canal 1011 est incliné par rapport à la surface 1012 du corps 101 délimitant la chambre 103. Comme on le voit en particulier sur la figure 5, le canal 1011 est incliné d'un angle OC entre l'axe du canal C et une parallèle D à l'axe de buse B, vu dans le plan P parallèle à l'axe de buse B et qui contient l'axe du canal C. Ce plan P est distant de l'axe de buse B. Ainsi, l'air débouchant dans la chambre 103 selon la direction de l'axe du canal C a une vitesse dont une composante engendre un mouvement circulaire dans la chambre 103, dans le sens des flèches F2.The nozzle 10 is detailed in Figures 3 to 5. It comprises a body 101 receiving the air ducts 13 and 14 of the product 14. The nozzle 10 comprises a capsule 102 fitted and fixed on the body 101 by a ring 104. The capsule 102 delimits with the body 101 a circular chamber 103 of axis the nozzle axis B. The capsule 102 has a central orifice 1020, centered on the nozzle axis B, and opening into the chamber 103 and outside of the nozzle 10. The body 101 further comprises a central tube 1010 connected to the product line 15 by means not shown. The tube 1010 has an axis coincident with the nozzle axis B, and it passes through the orifice 1020 to protrude slightly from the capsule 102. The body 101 also has three channels 1011 regularly distributed and opening into the chamber 103. Each channel 1011 is inclined relative to the surface 1012 of the body 101 defining the chamber 103. As can be seen in particular in FIG. 5, the channel 1011 is inclined at an angle OC between the axis of the channel C and a parallel D to the nozzle axis B, seen in the plane P parallel to the nozzle axis B and which contains the axis of the channel C. plane P is distant from the nozzle axis B. Thus, the air opening into the chamber 103 in the direction of the axis of the channel C has a speed whose component generates a circular motion in the chamber 103, in the direction arrows F2.
Lors de la mise en œuvre du procédé selon l'invention, l'appareil 1 est disposé sur le sol 20 dans le local 2 comme représenté sur la figure 1. Il pourrait aussi être accroché à une paroi 21. Le réservoir 13 contient un produit 3 liquide ayant des propriétés de désinfection, tel qu'une solution à base de peroxyde d'hydrogène. Le compresseur 12 fournit de l'air comprimé à plus de 3 bar. L'air comprimé pénètre dans la chambre 103 et crée un mouvement tourbillonnaire dans le sens des flèches F2. Il passe ensuite dans l'espace libre entre le tube 1010 et l'orifice 1020 de buse, et continue son mouvement tourbillonnaire dans la pièce. Une dépression est créée au débouché 10100 du tube 1010, ce qui aspire du liquide depuis le réservoir 13. Le produit 3 liquide qui s'écoule du tube 1010 est entraîné par l'air et atomisé en fines gouttelettes. Le brouillard ainsi formé se disperse dans le local 2 dans un mouvement tourbillonnaire, ce qui permet aux gouttelettes de conserver une vitesse importante tout en s' éloignant de l'appareil 1. On constate que le produit 3 peut atteindre des surfaces éloignées de l'appareil 1, même si ces surfaces sont difficiles d'accès.During the implementation of the method according to the invention, the apparatus 1 is placed on the floor 20 in the room 2 as shown in FIG. 1. It could also be hooked on a wall 21. The tank 13 contains a product 3 liquid having disinfecting properties, such as a solution based on hydrogen peroxide. The compressor 12 provides compressed air at more than 3 bar. The compressed air enters the chamber 103 and creates a swirling motion in the direction of the arrows F2. It then passes into the free space between the tube 1010 and the nozzle orifice 1020, and continues its swirling motion in the room. A vacuum is created at the outlet 10100 of the tube 1010, which draws liquid from the reservoir 13. The liquid product 3 flowing from the tube 1010 is driven by air and atomized into fine droplets. The mist thus formed disperses in the room 2 in a swirling motion, which allows the droplets to maintain a high speed while moving away from the apparatus 1. It can be seen that the product 3 can reach surfaces remote from the device 1, even if these surfaces are difficult to access.
Un essai de traitement d'un local a été réalisé selon la norme NF T 72-281 sur une souche de Candida Albicans IP 1180-79 en utilisant le produit EBT 100 V2001 fourni par Gerfo (FR) . L'essai montre que le taux de réduction de la souche est de 6,5 log. A local treatment trial was conducted according to standard NF T 72-281 on a strain of Candida Albicans IP 1180-79 using the product EBT 100 V2001 provided by Gerfo (FR). The test shows that the strain reduction rate is 6.5 log.

Claims

REVENDICATIONS
1. Procédé de diffusion d'un produit (3) liquide par atomisation dans l'air, selon lequel on atomise le produit (3) liquide en fines gouttelettes en suspension dans l'air pour former un brouillard, et on disperse le brouillard dans un volume à traiter, caractérisé en ce que l'on crée un mouvement d'air tourbillonnaire dans le brouillard pour le disperser.A method of diffusing a liquid product (3) by atomization in air, in which the liquid product (3) is atomized into fine droplets suspended in the air to form a mist, and the fog is dispersed in a volume to be treated, characterized in that a swirling air movement is created in the fog to disperse it.
2. Procédé de diffusion selon la revendication 1, selon lequel, pour former le mouvement tourbillonnaire, on crée un mouvement tourbillonnaire d'air comprimé dans une chambre (103) circulaire, et on laisse l'air comprimé s'échapper par un orifice (1020) central de la chambreThe diffusion method according to claim 1, wherein, to form the swirling motion, a swirling motion of compressed air is created in a circular chamber (103), and the compressed air is allowed to escape through an orifice ( 1020) central of the room
(103), situé sensiblement sur un axe de buse (B), central à la chambre (103) . (103), located substantially on a nozzle axis (B), central to the chamber (103).
3. Procédé selon la revendication 2, selon lequel on introduit le produit (3) liquide dans une zone centrale de l'orifice (1020) central.3. Method according to claim 2, wherein the liquid product (3) is introduced into a central zone of the central orifice (1020).
4. Procédé selon la revendication 2, selon lequel la pression d'alimentation en air comprimé est comprise entre 2 et 3,5 bar, de préférence 3 bar.4. The method of claim 2, wherein the compressed air supply pressure is between 2 and 3.5 bar, preferably 3 bar.
5. Procédé selon la revendication 3, selon lequel la pression d'alimentation du produit (3) liquide est la pression atmosphérique.5. Method according to claim 3, wherein the supply pressure of the liquid product (3) is the atmospheric pressure.
6. Appareil de diffusion d'un produit (3) liquide par atomisation dans l'air, caractérisé en ce qu'il met en œuvre le procédé selon l'une des revendications 1 à 5.6. Apparatus for diffusing a product (3) liquid by atomization in air, characterized in that it implements the method according to one of claims 1 to 5.
7. Appareil selon la revendication 6, caractérisé en ce qu'il comporte un compresseur (12) d'air, un réservoir (13) de liquide, et une buse (10) apte à recevoir de l'air comprimé par le compresseur (12) et du liquide depuis le réservoir (13), la buse (10) créant le brouillard et le mouvement d'air tourbillonnaire.7. Apparatus according to claim 6, characterized in that it comprises a compressor (12) of air, a reservoir (13) of liquid, and a nozzle (10) adapted to receive compressed air by the compressor ( 12) and liquid from the reservoir (13), the nozzle (10) creating the mist and the swirling air movement.
8. Appareil selon la revendication 7, dans lequel la buse (10) comporte une chambre (103) circulaire reliée au compresseur (12) et comportant un orifice (1020) central en communication avec l'air libre.Apparatus according to claim 7, wherein the nozzle (10) has a connected circular chamber (103) compressor (12) and having a central opening (1020) in communication with the open air.
9. Appareil selon la revendication 8, dans lequel la buse (10) comporte au moins un canal (1011) débouchant dans la chambre (103) circulaire, l'axe du canal (C) étant incliné par rapport à un plan radial de la chambre (103) passant par le débouché du canal (1011) et contenant l'axe de buse (B) .9. Apparatus according to claim 8, wherein the nozzle (10) comprises at least one channel (1011) opening into the chamber (103) circular, the axis of the channel (C) being inclined relative to a radial plane of the chamber (103) passing through the outlet of the channel (1011) and containing the nozzle axis (B).
10. Appareil selon la revendication 8, dans lequel la buse (10) comporte un tube (1010) central relié au réservoir (13) et débouchant au niveau de l'orifice (1020) central. 10. Apparatus according to claim 8, wherein the nozzle (10) comprises a central tube (1010) connected to the reservoir (13) and opening at the central orifice (1020).
PCT/FR2007/052603 2007-12-21 2007-12-21 Method and apparatus for diffusion of a liquid product by atomization in the air WO2009080902A1 (en)

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PCT/FR2007/052603 WO2009080902A1 (en) 2007-12-21 2007-12-21 Method and apparatus for diffusion of a liquid product by atomization in the air

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Application Number Priority Date Filing Date Title
PCT/FR2007/052603 WO2009080902A1 (en) 2007-12-21 2007-12-21 Method and apparatus for diffusion of a liquid product by atomization in the air

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB525736A (en) * 1939-02-27 1940-09-03 Geoffrey Warner Parr Improvements in and relating to apparatus for the nebulisation of liquids
FR2325434A1 (en) * 1975-09-24 1977-04-22 Green Edward VAPORIZER HEAD FOR LIQUID VAPORIZATION
GB2096911A (en) * 1981-04-21 1982-10-27 Simpkins David Rogers Price Atomizer
DE3412319C1 (en) * 1984-04-03 1985-06-27 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Working tool designed as a hydraulic vortex jet nozzle
WO1996023530A1 (en) * 1995-01-30 1996-08-08 Conceptair B.V. Fluid fumigating device
FR2867688A1 (en) * 2004-03-16 2005-09-23 Alain Michel Delaite Vortex sprayer for e.g. small premise, has blower creating air flow in tube, where air flow passing into helical static mixer generates vortex leaving through spray nozzle into atmosphere of premises

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB525736A (en) * 1939-02-27 1940-09-03 Geoffrey Warner Parr Improvements in and relating to apparatus for the nebulisation of liquids
FR2325434A1 (en) * 1975-09-24 1977-04-22 Green Edward VAPORIZER HEAD FOR LIQUID VAPORIZATION
GB2096911A (en) * 1981-04-21 1982-10-27 Simpkins David Rogers Price Atomizer
DE3412319C1 (en) * 1984-04-03 1985-06-27 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Working tool designed as a hydraulic vortex jet nozzle
WO1996023530A1 (en) * 1995-01-30 1996-08-08 Conceptair B.V. Fluid fumigating device
FR2867688A1 (en) * 2004-03-16 2005-09-23 Alain Michel Delaite Vortex sprayer for e.g. small premise, has blower creating air flow in tube, where air flow passing into helical static mixer generates vortex leaving through spray nozzle into atmosphere of premises

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