FR2481782A1 - LIQUID SPRAY NOZZLE, PARTICULARLY FOR SPRAYING LIQUID EFFLUENTS TO BE BURNED - Google Patents

LIQUID SPRAY NOZZLE, PARTICULARLY FOR SPRAYING LIQUID EFFLUENTS TO BE BURNED Download PDF

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Publication number
FR2481782A1
FR2481782A1 FR8108866A FR8108866A FR2481782A1 FR 2481782 A1 FR2481782 A1 FR 2481782A1 FR 8108866 A FR8108866 A FR 8108866A FR 8108866 A FR8108866 A FR 8108866A FR 2481782 A1 FR2481782 A1 FR 2481782A1
Authority
FR
France
Prior art keywords
liquid
chamber
conducting
under pressure
nozzle according
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.)
Pending
Application number
FR8108866A
Other languages
French (fr)
Inventor
Leon Wanson
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.)
WANSON CONSTR MAT THERM
Original Assignee
WANSON CONSTR MAT THERM
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
Priority claimed from BE0/200461A external-priority patent/BE883105A/en
Application filed by WANSON CONSTR MAT THERM filed Critical WANSON CONSTR MAT THERM
Publication of FR2481782A1 publication Critical patent/FR2481782A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
    • F23D11/103—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber with means creating a swirl inside the mixing chamber
    • 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
    • B05B17/0692—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 a fluid
    • 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
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0433—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of gas surrounded by an external conduit of liquid upstream the mixing chamber
    • 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
    • B05B7/0892—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 outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations

Abstract

The invention relates to a device for atomising fluids, in particular for atomising effluents or spent lyes which are to be burnt, with means for conducting gas under pressure and with means for conducting liquid under pressure as well as with a resonance chamber for forming waves at a frequency above the hearing threshold. The means for conducting the fluid under pressure are arranged around the circumference of the means for conducting the gas under pressure.

Description

Ajutage de pulvérisation de liquides, notamment
pour pulvériser des effluents liquides destinés à
être brûlés
L'invention a trait à un moyen de pulvérisation de liquides, plus particulièrement étudié pour pulvériser des effluents liquides destinés à être brûlés. I1 s'agit donc la plupart du temps de produits combustibles, mais qu'il serait malaisé, du fait de leurs caractéristiques physiques, de pulvériser par des moyens courants, tels que pulvérisation mécanique par exemple. I1 est donc fait appel à une pulvérisation dite acoustique.Spray nozzle for liquids, especially
for spraying liquid effluents intended for
to be burned
The invention relates to a means for spraying liquids, more particularly studied for spraying liquid effluents intended to be burned. They are therefore most of the time combustible products, but it would be difficult, due to their physical characteristics, to spray by current means, such as mechanical spraying for example. I1 is therefore called a so-called acoustic spray.

Dans ce dispositif, suivant un principe connu en soi, le liquide à pulvériser est introduit dans un champ de vibrations acoustiques, ce qui l'atomise finement tout en permettant que le liquide à pulvériser se présente à l'intérieur d'une fourchette de viscosité très large, allant du minimum à 150E et plus pour le dispositif suivant l'invention. In this device, according to a principle known per se, the liquid to be sprayed is introduced into a field of acoustic vibrations, which atomizes it finely while allowing the liquid to be sprayed to be present within a viscosity range very wide, ranging from the minimum to 150E and more for the device according to the invention.

Le procédé le plus courant pour la production d'ondes acoustiques est de lancer à grande vitesse un gaz dans une cavité dont les dimensions et la position permettent de créer des ondes acoustiques de fréquence légèrement supérieure au seuil audible, d'où aussi la dénomination de "pulvérisation ultrasonique". The most common process for the production of acoustic waves is to launch a gas at high speed into a cavity whose dimensions and position allow the creation of acoustic waves of frequency slightly above the audible threshold, hence also the name of "ultrasonic spraying".

Deux inconvénients limitent cependant fortement le champ d'application du procédé de base, à savoir que la cavité se remplit rapidement de dépôts tels que carbone ou impuretés contenues dans le liquide, et qu'il est difficile de maîtriser l'angle de pulvérisation et donc la forme du jet ou de la flamme. Two drawbacks, however, greatly limit the scope of the basic process, namely that the cavity quickly fills with deposits such as carbon or impurities contained in the liquid, and that it is difficult to control the spray angle and therefore the shape of the jet or flame.

L'invention a pour but d'obvier aux inconvénients précités. The invention aims to overcome the aforementioned drawbacks.

Elle consiste en un ajutage de pulvérisation de liquides, notamment pour pulvériser des effluents liquides destinés à être brûlés, comprenant des moyens de conduite de gaz sous pression et des moyens de conduite de liquide sous pression, et une cavité de résonance pour la production d'ondes de fréquence supérieure au seuil audible, dans lequel les moyens de conduite du liquide sous pression sont disposés périphériquement autour des moyens de conduite du gaz sous pression, et dont les dispositions principales sont les suivantes
- essentiellement, les moyens de conduite du gaz sous pression sont constitués par un conduit central convergent aboutissant dans une extrémité d'une chambre dite de rotation, les moyens de conduite du liquide comprenant des canaux tangentiels à la paroi latérale intérieure de cette chambre, l'extrémité opposée de la chambre de rotation s'ouvrant dans un orifice coaxial à paroi conique divergente, disposé coaxialement en-dessous d'une cupule qui constitue la cavité de résonance. La cupule est entourée d'une chambre finale annulaire située au-dessus de l'orifice conique divergent qui débouche dans celle-ci, des orifices d'éjection pour le liquide pulvérisé étant répartis dans la paroi de fond de ladite chambre annulaire finale
- les moyens de conduite du liquide comprennent une chambre plate annulaire de distribution dans laquelle aboutissent, près de sa périphérie, les conduits d'amenée de liquide qui s'étendent parallèlement à l'axe longitudinal du convergent d'amenée du gaz sous pression, la chambre de rotation étant disposée au centre de la chambre de distribution et étant reliée à cette dernière par lesdits conduits tangentiels
- les génératrices de la paroi conique divergente de l'orifice par lequel le liquide est entrainé par le gaz dans la chambre finale, prolongées dans cette chambre, embrassent, sans le toucher, le bord de l'ouverture inférieure de la cavité de résonance.It consists of a nozzle for spraying liquids, in particular for spraying liquid effluents intended to be burned, comprising means for conducting gas under pressure and means for conducting liquid under pressure, and a resonance cavity for the production of waves of frequency greater than the audible threshold, in which the means for conducting the pressurized liquid are disposed peripherally around the means for conducting the pressurized gas, and the main provisions of which are as follows
- essentially, the means for conducting the pressurized gas are constituted by a converging central duct terminating in one end of a so-called rotation chamber, the means for conducting the liquid comprising channels tangential to the inner side wall of this chamber, l 'opposite end of the rotation chamber opening into a coaxial orifice with a diverging conical wall, arranged coaxially below a cup which constitutes the resonance cavity. The cup is surrounded by an annular final chamber situated above the divergent conical orifice which opens into it, ejection orifices for the sprayed liquid being distributed in the bottom wall of said final annular chamber
the means for conducting the liquid comprise an annular flat distribution chamber in which close, around its periphery, the liquid supply conduits which extend parallel to the longitudinal axis of the convergent supply line for the pressurized gas, the rotation chamber being arranged in the center of the distribution chamber and being connected to the latter by said tangential conduits
- The generators of the divergent conical wall of the orifice through which the liquid is entrained by the gas in the final chamber, extended in this chamber, embrace, without touching it, the edge of the lower opening of the resonance cavity.

L'invention sera mieux comprise en considérant les figures jointes qui en représentent une forme de réalisation. The invention will be better understood by considering the attached figures which represent an embodiment thereof.

On voit, en
- figure 1, la coupe longitudinale axiale d'un ajutage suivant l'invention
- figure 2, une demi-coupe suivant II-II de la figure 1.We see, in
- Figure 1, the axial longitudinal section of a nozzle according to the invention
- Figure 2, a half-section along II-II of Figure 1.

Sur la figure 1, on a représenté par 1 l'extrémité de l'ajutage, dirigée vers le foyer. 2 est la cavité de résonance, 3 désigne les orifices répartis régulièrement autour de la chambre 2 et mettant en communication avec l'extérieur la chambre annulaire finale 4. 5 désigne un plateau limitant inférieurement la chambre finale 4, et supérieurement la chambre plate annulaire de distribution 13. Au centre de celle-ci se trouve un plateau 14 présentant en son centre la chambre de rotation 7. Celle-ci reçoit par des canaux- tangentiels à sa paroi intérieure, le liquide arrivant dans la chambre plate 13 par les conduits 10. In Figure 1, there is shown by 1 the end of the nozzle, directed towards the hearth. 2 is the resonance cavity, 3 denotes the orifices distributed regularly around the chamber 2 and putting the final annular chamber 4 into communication with the outside. 5 denotes a plate lowerly limiting the final chamber 4, and higherly the annular flat chamber of distribution 13. At the center thereof is a plate 14 having at its center the rotation chamber 7. The latter receives by channels tangential to its inner wall, the liquid arriving in the flat chamber 13 through the conduits 10 .

Ceux-ci sont limités par des parois diviseuses 10'. Dans une tige centrale 15 est creusé le passage 9 amenant lue gaz sous pression (par exemple de l'air). Le passage converge vers une partie rétrécie 8 s'ouvrant dans la chambre de rotation 7. Le plateau 5 est traversé par un orifice à paroi conique, 11, qui débouche dans la chambre 4. L'air entrainant le liquide sort de la chambre 7 par l'orifice 11 pour arriver autour du bord périphérique 2' de la cavité de résonance, sans le dépasser, la cavité 2 ne recevant qu'un jet d'airpurcentral. These are limited by dividing walls 10 '. In a central rod 15 is hollowed out the passage 9 bringing the gas under pressure (for example air). The passage converges towards a narrowed portion 8 opening into the rotation chamber 7. The plate 5 is crossed by a conical wall orifice, 11, which opens into the chamber 4. The air entraining the liquid leaves the chamber 7 through the orifice 11 to arrive around the peripheral edge 2 ′ of the resonance cavity, without exceeding it, the cavity 2 receiving only a jet of central air.

Aux abords des bords 2' se situe la région où se passe l'effet ultrasonique dont il a été question plus haut. Le mélange combustible final s'échappe vers le foyer par les orifices d'éjection 3 dont la section totale est d'au moins trois fois la section de passage 8. Chaque orifice doit être assez grand pour ne pas être obstrué par d'éventuelles impuretés solides. Near the edges 2 ′ is located the region where the ultrasonic effect mentioned above occurs. The final fuel mixture escapes towards the hearth through the ejection orifices 3, the total section of which is at least three times the passage section 8. Each orifice must be large enough not to be obstructed by possible impurities solid.

On comprendra aisément que la forme et la disposition des orifices 3 permettent d'obtenir toute forme voulue de jet ou de flamme.  It will be readily understood that the shape and arrangement of the orifices 3 make it possible to obtain any desired form of jet or flame.

Claims (5)

REVENDICATIONS 1. Ajutage de pulvérisation de liquides, notamment pour pulvériser des effluents liquides destinés à être brûlés, comprenant des moyens de conduite de gaz sous pression et des moyens de conduite de liquide sous pression, et une cavité de résonance pour la production d'ondes de fréquence supérieure au seuil audible, caractérisé en ce que les moyens de conduite du liquide sous pression (10, 13) sont disposés périphériquement autour des moyens de conduite du gaz sous pression. 1. Nozzle for spraying liquids, in particular for spraying liquid effluents intended to be burned, comprising means for conducting gas under pressure and means for conducting liquid under pressure, and a resonance cavity for producing waves of frequency above the audible threshold, characterized in that the means for conducting the pressurized liquid (10, 13) are disposed peripherally around the means for conducting the pressurized gas. 2. Ajutage suivant la revendication 1, caractérisé en ce que les moyens de conduite du gaz sous pression sont constitués par un conduit central convergent (9),-aboutissant dans une extrémité (8) d'une chambre dite de rotation (7), les moyens de conduite du liquide (10) comprenant des canaux tangentiels à la paroi latérale intérieure de cette chambre, l'extrémité opposéede la chambre de rotation s'ouvrant dans un orifice coaxial (11) à paroi divergente, disposé coaxialement en-dessous d'une cupule qui constitue la cavité de résonance (2) ; et en ce que la cupule est entourée d'une chambre finale annulaire (4) située au-dessus de l'orifice conique divergent (11) qui debouche dans celle-ci, des orifices d'éjection (3) pour le liquide pulvérisé étant répartis dans la paroi de fond (5) de ladite chambre annulaire finale. 2. Nozzle according to claim 1, characterized in that the means for conducting the pressurized gas consist of a converging central duct (9), - terminating in one end (8) of a so-called rotation chamber (7), the liquid conducting means (10) comprising channels tangential to the inner side wall of this chamber, the opposite end of the rotation chamber opening into a coaxial orifice (11) with a divergent wall, arranged coaxially below 'a cup which constitutes the resonance cavity (2); and in that the cup is surrounded by an annular final chamber (4) situated above the divergent conical orifice (11) which opens into it, ejection orifices (3) for the sprayed liquid being distributed in the bottom wall (5) of said final annular chamber. 3. Ajutage suivant la revendication 2, caractérisé en ce que les moyens de conduite du liquide comprennent une chambre plate annulaire de distribution (13) dans laquelle aboutissent, près de sa périphérie, les conduits d'amenée de liquide (10) qui s'étendent parallèlement à l'axe longitudinal du convergent d'amenée du gaz sous pression, la chambre de rotation (7) étant disposée au centre de la chambre de distribution (13) et étant reliée à cette dernière par lesdits conduits tangentiels. 3. Nozzle according to claim 2, characterized in that the liquid conducting means comprise a flat annular distribution chamber (13) in which terminate, near its periphery, the liquid supply conduits (10) which are extend parallel to the longitudinal axis of the pressurized gas supply converging, the rotation chamber (7) being arranged in the center of the distribution chamber (13) and being connected to the latter by said tangential conduits. 4. Ajutage suivant les revendication 2 et 3, carac térisé en ce que les génératrices de la paroi conique divergente de l'orifice (11) par lequel le liquide est entraîné par le gaz dans la chambre finale (4), prolongés dans cette chambre, embrassent, sans le toucher, le bord (2') de l'ou verture inférieure de la cavité de résonance. 4. Nozzle according to claims 2 and 3, charac terized in that the generators of the diverging conical wall of the orifice (11) through which the liquid is entrained by the gas in the final chamber (4), extended in this chamber , embrace, without touching it, the edge (2 ') of the lower opening of the resonance cavity. 5. Ajutage suivant la revendication 2, caractérisé en ce que la section totale des orifices d'éjection (3) est au moins égale à trois fois la section de la partie la plus étroite (8) du conduit central convergent qui amène le gaz sous pression.  5. Nozzle according to claim 2, characterized in that the total section of the ejection orifices (3) is at least equal to three times the section of the narrowest part (8) of the converging central duct which brings the gas under pressure.
FR8108866A 1980-05-05 1981-05-05 LIQUID SPRAY NOZZLE, PARTICULARLY FOR SPRAYING LIQUID EFFLUENTS TO BE BURNED Pending FR2481782A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE0/200461A BE883105A (en) 1980-05-05 1980-05-05 LIQUID SPRAY NOZZLE, PARTICULARLY FOR SPRAYING LIQUID EFFLUENTS TO BE BURNED

Publications (1)

Publication Number Publication Date
FR2481782A1 true FR2481782A1 (en) 1981-11-06

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FR8108866A Pending FR2481782A1 (en) 1980-05-05 1981-05-05 LIQUID SPRAY NOZZLE, PARTICULARLY FOR SPRAYING LIQUID EFFLUENTS TO BE BURNED

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DE (1) DE3117524A1 (en)
FR (1) FR2481782A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004056488A1 (en) * 2002-12-20 2004-07-08 Consejo Superior De Investigaciones Científicas Highly-efficient spray head for viscous fluids and use thereof
FR2859650A1 (en) * 2003-09-12 2005-03-18 Gloster Sante Europ Liquid composition atomization nozzle for disinfecting e.g. hospital, has ultrasonic resonator and resonant chamber coupled to opening of primary channel so that liquid ejected from opening is subjected to ultrasonic field
DE212008000073U1 (en) 2007-09-28 2010-07-29 Officine Meccaniche Pejrani S.R.L. Device for disinfecting closed rooms
CN106622717A (en) * 2016-11-11 2017-05-10 合肥辰泰安全设备有限责任公司 Atomized water spray nozzle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3117523A1 (en) 1980-05-07 1982-03-25 Etablissements Wanson, Construction de Matériel Thermique, S.A., 1130 Bruxelles Device for combusting a liquid
DE4439670A1 (en) * 1994-11-07 1996-05-09 Bayer Ag Process for the thermal oxidation of liquid waste
CN116213179B (en) * 2023-05-10 2023-07-28 通威微电子有限公司 Ultrasonic atomization glue spraying device, ultrasonic atomization glue spraying system and seed crystal bonding method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240254A (en) * 1963-12-23 1966-03-15 Sonic Dev Corp Compressible fluid sonic pressure wave apparatus and method
US3899130A (en) * 1974-02-28 1975-08-12 Sonic Dev Corp Atomizer with graduated liquid feed and manufacturing method
US4018387A (en) * 1975-06-19 1977-04-19 Erb Elisha Nebulizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240254A (en) * 1963-12-23 1966-03-15 Sonic Dev Corp Compressible fluid sonic pressure wave apparatus and method
US3899130A (en) * 1974-02-28 1975-08-12 Sonic Dev Corp Atomizer with graduated liquid feed and manufacturing method
US4018387A (en) * 1975-06-19 1977-04-19 Erb Elisha Nebulizer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004056488A1 (en) * 2002-12-20 2004-07-08 Consejo Superior De Investigaciones Científicas Highly-efficient spray head for viscous fluids and use thereof
ES2249074A1 (en) * 2002-12-20 2006-03-16 Consejo Sup. Investig. Cientificas Highly-efficient spray head for viscous fluids and use thereof
FR2859650A1 (en) * 2003-09-12 2005-03-18 Gloster Sante Europ Liquid composition atomization nozzle for disinfecting e.g. hospital, has ultrasonic resonator and resonant chamber coupled to opening of primary channel so that liquid ejected from opening is subjected to ultrasonic field
WO2005025757A2 (en) * 2003-09-12 2005-03-24 Gloster Sante Europe Device for atomizing a liquid composition
WO2005025757A3 (en) * 2003-09-12 2005-06-02 Gloster Sante Europ Device for atomizing a liquid composition
CN100441309C (en) * 2003-09-12 2008-12-10 欧洲格罗斯特健康公司 Device for atomizing a liquid composition
DE212008000073U1 (en) 2007-09-28 2010-07-29 Officine Meccaniche Pejrani S.R.L. Device for disinfecting closed rooms
US8529833B2 (en) 2007-09-28 2013-09-10 Officine Meccaniche Perjrani S.r.l. Method and apparatus for disinfecting enclosed spaces
CN106622717A (en) * 2016-11-11 2017-05-10 合肥辰泰安全设备有限责任公司 Atomized water spray nozzle

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