FR2555470A1 - Apparatus and method for spraying a liquid product in the form of fine particles - Google Patents

Apparatus and method for spraying a liquid product in the form of fine particles Download PDF

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Publication number
FR2555470A1
FR2555470A1 FR8318829A FR8318829A FR2555470A1 FR 2555470 A1 FR2555470 A1 FR 2555470A1 FR 8318829 A FR8318829 A FR 8318829A FR 8318829 A FR8318829 A FR 8318829A FR 2555470 A1 FR2555470 A1 FR 2555470A1
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FR
France
Prior art keywords
nozzle
product
fine particles
liquid product
air source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8318829A
Other languages
French (fr)
Other versions
FR2555470B1 (en
Inventor
Eric Guiol
Karl Heinz Debrus
Jean-Pierre Moraldo
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PARAGERM FRANCE
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PARAGERM FRANCE
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 PARAGERM FRANCE filed Critical PARAGERM FRANCE
Priority to FR8318829A priority Critical patent/FR2555470B1/en
Publication of FR2555470A1 publication Critical patent/FR2555470A1/en
Application granted granted Critical
Publication of FR2555470B1 publication Critical patent/FR2555470B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • 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
    • B05B7/16—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 incorporating means for heating or cooling the material to be sprayed
    • B05B7/1606—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 incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—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 incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • B05B7/162—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 incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed
    • B05B7/1626—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 incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed at the moment of mixing

Abstract

Apparatus and method for spraying a liquid product in the form of fine particles. The liquid product 7 arrives at the nozzle 1 via the pipe 5 and compressed air via the second pipe. The air is preheated by a heating device 13. Disinfecting premises.

Description

Appareil et procédé de diffusion en fines particules d'un produit liquide.Apparatus and method for diffusing a liquid product into fine particles.

La présente invention- se rapporte aux appareils et procédés de diffusion en fines particules d'un produit liquide. Ces appareils de formation d'aérosols sont particulièrement utiles pour désinfecter ou assainir l'atmosphère de locaux, notamment de salles d'hôpitaux. The present invention relates to apparatus and methods for diffusing into fine particles a liquid product. These aerosol forming devices are particularly useful for disinfecting or cleaning the atmosphere of premises, in particular hospital rooms.

On connaît déjà un appareil de diffusion en fines particules d'un produit liquide, qui comprend une buse de diffusion alimentée, par deux conduits distincts, respectivement par un récipient de produit à diffuser et par une source d'air comprimé. Un dispositif de chauffage chauffe le récipient et/ou le conduit menant du récipient à la buse de manière à porter le produit liquide à la température requise pour la diffusion. An apparatus for diffusing fine particles of a liquid product is already known, which comprises a diffusion nozzle supplied by two separate conduits, respectively by a container of product to be diffused and by a source of compressed air. A heating device heats the container and / or the duct leading from the container to the nozzle so as to bring the liquid product to the temperature required for diffusion.

Certains produits supportent mal cet échauf f e- ment avant la buse d'une durée relativement longue, soit qu'ils se décomposent, soit que certains de leurs constituants plus volatils sont diffuses préférentiel- lement. La concentration du produit diffusé n'est pas constante dans le temps. Lorsque l'on interrompt pendant peu de temps le fonctionnement de l'appareil, il arrive que le produit soit porté à l'ébullition dans la buse. Cet état d'ébullition empêche de réamorcer la pompe d'alimentation en air comprimé de la buse. Some products do not tolerate this heating badly before the nozzle of a relatively long duration, either because they decompose, or because some of their more volatile constituents are preferentially diffuse. The concentration of the diffused product is not constant over time. When the operation of the apparatus is interrupted for a short time, it happens that the product is brought to the boil in the nozzle. This boiling state prevents re-priming of the nozzle air supply pump.

On ne peut pas pallier cet inconvénient en abaissant la température à laquelle on porte normalement le produit, parce que toute diminution de température donne une mauvaise granulométrie à l'aérosol.This disadvantage cannot be overcome by lowering the temperature to which the product is normally brought, because any reduction in temperature gives the aerosol a bad particle size.

L'invention remédie à ces inconvénients par un appareil et par un procédé de diffusion en fines particules d'un produit liquide, qui suppriment toute décantation ou séparation de phases due à la chaleur dans le récipient, qui assurent une bonne régularité de la concentration du produit diffusé, qui permettent d'interrompre la diffusion pendant une durée brève puis de la reprendre sans craindre que l'appareil ne fonctionne plus, tout en obtenantlagranulométrie requise dans l'aérosol. The invention remedies these drawbacks by an apparatus and by a process for diffusing into fine particles a liquid product, which eliminates any decantation or phase separation due to the heat in the container, which ensures a good regularity of the concentration of the diffused product, which make it possible to interrupt the diffusion for a short time and then to resume it without fear that the device will no longer work, while obtaining the required particle size in the aerosol.

Dans l'appareil suivant l'invention, le dispositif de chauffage est en contact d'échange thermique avec le conduit allant de la source d'air à la buse. In the device according to the invention, the heating device is in heat exchange contact with the duct going from the air source to the nozzle.

C'est maintenant l'air, et non plus le produit éventuellement sensible, qui est chargé d'apporter les calories nécessaires à la buse. Le produit n'est porté à la température requise que brièvement, seulement lorsqu'il passe dans la buse. It is now the air, and no longer the potentially sensitive product, which is responsible for supplying the calories necessary for the nozzle. The product is brought to the required temperature only briefly, only when it passes through the nozzle.

Les inconvénients d'une ébullition sont d'autant mieux écartés que, suivant une variante avantageuse, le conduit allant de la source d'air à la buse comprend deux tronçons dont le plus proche de la buse est en un matériau isolant du point de vue thermique. The drawbacks of a boil are all the more avoided since, according to an advantageous variant, the duct going from the air source to the nozzle comprises two sections of which the closest to the nozzle is made of an insulating material from the point of view thermal.

La propagation de la chaleur entre le dispositif de chauffage et la buse s'effectue ainsi par le biais de l'air chauffé et non par conduction calorifique le long du conduit. L'inertie thermique est bien moindre.The propagation of heat between the heating device and the nozzle is thus effected by means of the heated air and not by heat conduction along the duct. The thermal inertia is much lower.

Dès que l'on cesse d'alimenter l'appareil en air, la température de la buse diminue, sans retard.As soon as the air supply is stopped, the temperature of the nozzle decreases without delay.

L'invention vise également un procédé pour diffuser en fines particules un produit liquide qui consiste à envoyer de l'air comprimé et du produit dans une buse, caractérisé en ce qu'il consiste à chauffer l'air comprimé avant de l'envoyer dans la buse. The invention also relates to a method for diffusing into fine particles a liquid product which consists in sending compressed air and product in a nozzle, characterized in that it consists in heating the compressed air before sending it in the nozzle.

La figure unique du dessin annexé illustre l'invention.  The single figure of the accompanying drawing illustrates the invention.

L'appareil comprend une buse 1 ayant une sortie 2 et deux entrées 3, 4. L'entrée 3 est raccordée par un tuyau souple 5 à un bidon 6 contenant du produit liquide 7 à diffuser. L'entrée 4 est raccordée par un tronçon isolant thermique 8 et un tronçon 12 en cuivre au raccord de refoulement 9 d'une source d'air comprimé 1G, constituée d'un compresseur aspirant de l'air frais par une aspiration 11. The apparatus comprises a nozzle 1 having an outlet 2 and two inlets 3, 4. The inlet 3 is connected by a flexible pipe 5 to a container 6 containing liquid product 7 to be diffused. The inlet 4 is connected by a thermal insulating section 8 and a copper section 12 to the discharge connection 9 of a compressed air source 1G, consisting of a compressor sucking in fresh air by a suction 11.

Le tronçon isolant thermique 8 met en communication l'entrée 4 de la buse 1 et un tronçon 12-en cuivre partant du raccord de refoulement 9 et serpentant autour d'un élément de chauffage 13 par résistance électrique. The thermal insulating section 8 connects the inlet 4 of the nozzle 1 and a copper section 12 starting from the discharge connection 9 and winding around a heating element 13 by electrical resistance.

Pour diffuser du produit, on met le compresseur 10 en marche et on met sous tension le dispositif de chauffage 13. De l'air chaud est aspiré dans la buse 1, s'y mélange avec le produit 7 également aspiré et le réchauffe. Le mélange de produit et d'air est diffusé par la sortie 2 sous la forme dsun aérosol.  To diffuse the product, the compressor 10 is started and the heating device 13 is turned on. Hot air is sucked into the nozzle 1, mixed with the product 7 also sucked in and heats it. The mixture of product and air is diffused through outlet 2 in the form of an aerosol.

Claims (5)

REVENDICATIONS 1. Appareil de diffusion en fines particules d'un produit liquide, comprenant une buse ll) de diffusion alimentée, par deux conduits distincts, respectivement par un récipient de produit (7) à diffuser et par une source d'air (10) et un dispositif de chauffage (13) permettant de porter à la température requise le produit se trouvant dans la buse (1), caractérisé en ce que le dispositif de chauffage (13) est en contact d'échange thermique avec le conduit (8) allant de la source d'air (10) à la buse (1). 1. Apparatus for diffusing fine particles of a liquid product, comprising a diffusion nozzle 11) supplied by two separate conduits, respectively by a container of product (7) to be diffused and by an air source (10) and a heating device (13) allowing the product in the nozzle (1) to be brought to the required temperature, characterized in that the heating device (13) is in heat exchange contact with the conduit (8) going from the air source (10) to the nozzle (1). 2. Appareil suivant la revendication 1, caractérisé en ce que le conduit allant de la source ce d'air (10) à la buse (1) comprend un serpentin (12) serpentant autour d'un élément de chauffage (13). 2. Apparatus according to claim 1, characterized in that the duct from the air source (10) to the nozzle (1) comprises a coil (12) winding around a heating element (13). 3. Appareil suivant la revendication 1 ou 2, caractérisé en ce que le conduit allant de la source d'air (10) à la buse (1) comprend deux tron çons (8, 12) dont le plus proche (8) de la buse (1) est en un matériau isolant du point de vue thermique. 3. Apparatus according to claim 1 or 2, characterized in that the duct going from the air source (10) to the nozzle (1) comprises two sections (8, 12) of which the closest (8) to the nozzle (1) is made of a thermally insulating material. 4. Appareil suivant la revendication 2 ou 3, caractérisé en ce que le tronçon le plus proche (8) de la buse (1) est en matière plastique et le tronçon le plus éloigné (12) de la buse (l) est en métal. 4. Apparatus according to claim 2 or 3, characterized in that the closest section (8) of the nozzle (1) is made of plastic and the most distant section (12) of the nozzle (l) is made of metal . 5. Procédé pour diffuser en fines particules un produit liquide qui consiste à envoyer de l'air comprimé et du produit dans une buse, caractérisé en ce qu'il consiste à chauffer l'air comprimé avant de l'envoyer dans la buse.  5. Method for diffusing into fine particles a liquid product which consists in sending compressed air and product in a nozzle, characterized in that it consists in heating the compressed air before sending it in the nozzle.
FR8318829A 1983-11-25 1983-11-25 APPARATUS AND METHOD FOR DELIVERING FINE PARTICLES OF A LIQUID PRODUCT Expired FR2555470B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8318829A FR2555470B1 (en) 1983-11-25 1983-11-25 APPARATUS AND METHOD FOR DELIVERING FINE PARTICLES OF A LIQUID PRODUCT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8318829A FR2555470B1 (en) 1983-11-25 1983-11-25 APPARATUS AND METHOD FOR DELIVERING FINE PARTICLES OF A LIQUID PRODUCT

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FR2555470A1 true FR2555470A1 (en) 1985-05-31
FR2555470B1 FR2555470B1 (en) 1987-01-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655547A1 (en) * 1989-12-13 1991-06-14 Total France Process for neutralising unpleasant industrial and urban odours and apparatus for carrying out this process
FR2659854A1 (en) * 1990-03-23 1991-09-27 Goldenberg Marc Method for slowly diffusing a liquid substance into an enclosure, and installation for carrying out this method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE478441A (en) * 1947-04-26
US3095264A (en) * 1963-06-25 Device for aspirating and heating a liquid fumigant
US4065057A (en) * 1976-07-01 1977-12-27 Durmann George J Apparatus for spraying heat responsive materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095264A (en) * 1963-06-25 Device for aspirating and heating a liquid fumigant
BE478441A (en) * 1947-04-26
US4065057A (en) * 1976-07-01 1977-12-27 Durmann George J Apparatus for spraying heat responsive materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655547A1 (en) * 1989-12-13 1991-06-14 Total France Process for neutralising unpleasant industrial and urban odours and apparatus for carrying out this process
FR2659854A1 (en) * 1990-03-23 1991-09-27 Goldenberg Marc Method for slowly diffusing a liquid substance into an enclosure, and installation for carrying out this method

Also Published As

Publication number Publication date
FR2555470B1 (en) 1987-01-30

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