EP1883478B1 - Nozzle comprising a swirl chamber - Google Patents
Nozzle comprising a swirl chamber Download PDFInfo
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- EP1883478B1 EP1883478B1 EP06764583A EP06764583A EP1883478B1 EP 1883478 B1 EP1883478 B1 EP 1883478B1 EP 06764583 A EP06764583 A EP 06764583A EP 06764583 A EP06764583 A EP 06764583A EP 1883478 B1 EP1883478 B1 EP 1883478B1
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- 238000005507 spraying Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract description 27
- 239000007921 spray Substances 0.000 abstract description 15
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
Definitions
- It relates in particular to a nozzle for obtaining a better spray compared to existing vortex chambers.
- An imprint that delimits a cavity forming said swirl chamber is formed inside the outer part, which further comprises an ejection duct opening on the one hand into the cavity, and on the other hand outside the button pusher, and extending through its wall from the center of said footprint.
- the two parts have faces inclined relative to a second axis of interlocking common to them, applying against each other.
- the impression is made on the inclined face of the outer part, and the inclined faces are oriented in a direction and at an angle sufficient to make possible a demolding of the outer part along the common axis (second interlocking axis) without damage the impression.
- the fluid to be sprayed is introduced into the vortex chamber with a certain flow rate through at least two supply channels opening tangentially into the chamber.
- the duct of the vortex chambers is central and its axis corresponds to the axis of symmetry of revolution of the chamber.
- the ejection duct of the vortex chamber extends perpendicular to the common axis of the two parts, to allow lateral spraying. Also, the axis of the ejection duct is inclined relative to the axis of the vortex chamber.
- the inclination of the axis of the ejection duct creates a disturbance which imbalances the movement of the fluid injected into the vortex chamber at high speed. This movement is slowed, attenuated or even completely rolled, at the entrance of the ejection duct, which leads to obtaining a jet at the outlet of the duct, rather than obtaining the desired spray.
- the reason for obtaining a jet rather than a spray is as follows: the fluid is swirled in an axially symmetrical motion, and this movement is obtained in the vortex chamber around the central axis of the fluid. bedroom. This movement of the fluid in accelerated rotation is strongly disturbed at the approach of the ejection duct, because of the abrupt change of direction imposed by the inclined orientation of the ejection duct relative to the axis of the chamber.
- the present invention aims to overcome the problem of poor quality of spray which is related to the inclination of the axis of the ejection duct relative to the axis of the vortex chamber, proposing another solution compared to that consisting of to realize two channels of different sections.
- the distance separating the two origin O and O ' is at least equal to 60 ⁇ m, and preferably greater than or equal to 120 ⁇ m.
- the distance separating the two origins O and O ' is 150 ⁇ m.
- the channels open uniformly to the periphery of the chamber.
- the channels are oriented in a direction tangent to the periphery of said chamber.
- the chamber is formed of a frustoconical cavity provided with a flat bottom where opens the upstream end of said conduit.
- the nozzle according to the invention thus makes it possible to obtain uniform sprays, with chambers connected to channels whose axis is inclined with respect to that of the axis of the chamber, in order to be able to be used in the sprays. pushers for lateral spraying of fluids.
- the channels 2 and 3 have the same section, so that both channels have identical fluid flow capacities.
- the channels 2 and 3 open uniformly to the periphery of the chamber 1. In this way, it promotes a uniform distribution of the fluid in the chamber.
- the chamber 1 is formed of a frustoconical cavity provided with a flat bottom 5 which opens the upstream end of a conduit 4 for ejecting fluid towards the outside of the nozzle.
- the ejection duct 4 consists of a tubular element and has an axis ⁇ which is inclined at an angle ⁇ with respect to the axis of symmetry Z of the chamber 1.
- the duct 4 is made in such a way that its axis ⁇ has an origin O 'whose position is shifted by a distance d with respect to the origin O of the axis of symmetry Z.
- the distance d depends on the value of the inclination angle ⁇ of the duct.
- the direction defined by the straight line connecting the two origins O and O ' depends on the position and the section of the channels 2 and 3, and finally the direction of orientation between O and O' is opposite to the orientation of the duct 4, that is to say in the direction of ejection of the fluid to the outside of the spray nozzle.
- the vortex flow created in the chamber is all the more disturbed at the entrance of the ejection duct that the angle of inclination of the duct is high. Also, it has been found that the higher the angle of inclination, and the more we must seek to increase the imbalance in the chamber to obtain, at the outlet of the ejection duct a homogeneous spray. Also, by bringing the upstream orifice of the ejection duct of the outlet end of one of the channels 2 or 3, the disturbance caused by the inclination of the ejection duct is compensated by the imbalance created by means of bringing the duct inlet closer to the outlet of one of the channels.
- the distance d is at least equal to 60 ⁇ m.
- the point O ' is chosen on a straight line D whose direction is substantially parallel to the tangent of the swirling flow passing through the point O.
- the direction of the swirling flow of the fluid in the chamber is symbolized by the arrows S on the figure 2 .
- This line D passing through O cuts the circle C in two points.
- the point O ' which is chosen from these two points in such a way that the vector 00' has a direction opposite to that of circulation of the flow (direction of flow symbolized by the arrows S), and particularly to its direction of ejection of the product from the bedroom and via the duct.
- the invention extends to any nozzle incorporating the characteristics of the invention.
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- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
Description
La présente invention concerne une buse de pulvérisation à chambre tourbillonnaire, qui est conçue pour un bouton-poussoir de pulvérisateur à sortie latérale.The present invention relates to a swirl chamber spray nozzle, which is designed for a side exit sprayer push button.
Elle concerne en particulier une buse permettant d'obtenir une meilleure pulvérisation par rapport aux chambres tourbillonnaires existantes.It relates in particular to a nozzle for obtaining a better spray compared to existing vortex chambers.
La demande de brevet français
Une empreinte qui délimite une cavité formant ladite chambre tourbillonnaire est réalisée à l'intérieur de la pièce extérieure, laquelle comporte en outre un conduit d'éjection débouchant d'une part dans la cavité, et d'autre part à l'extérieur du bouton-poussoir, et s'étendant au travers de sa paroi à partir du centre de ladite empreinte.An imprint that delimits a cavity forming said swirl chamber is formed inside the outer part, which further comprises an ejection duct opening on the one hand into the cavity, and on the other hand outside the button pusher, and extending through its wall from the center of said footprint.
Les deux pièces comportent des faces inclinées par rapport à un second axe d'emboîtement qui leur est commun, s'appliquant l'une contre l'autre. L'empreinte est pratiquée sur la face inclinée de la pièce extérieure, et les faces inclinées sont orientées dans un sens et selon un angle suffisant pour rendre possible un démoulage de la pièce extérieure selon l'axe commun (second axe d'emboîtement) sans endommager l'empreinte.The two parts have faces inclined relative to a second axis of interlocking common to them, applying against each other. The impression is made on the inclined face of the outer part, and the inclined faces are oriented in a direction and at an angle sufficient to make possible a demolding of the outer part along the common axis (second interlocking axis) without damage the impression.
Le fluide à pulvériser est introduit dans la chambre tourbillonnaire avec un certain débit par au moins deux canaux d'amenée débouchant tangentiellement dans la chambre.The fluid to be sprayed is introduced into the vortex chamber with a certain flow rate through at least two supply channels opening tangentially into the chamber.
De manière classique, le débit d'injection du fluide dans la chambre génère une circulation rotative tourbillonnaire accélérée (dite « en swirl ») du fluide dans la chambre juste avant son éjection vers l'extérieur du bouton-poussoir, provoquant la pulvérisation du fluide.In a conventional manner, the rate of injection of the fluid into the chamber generates an accelerated swirling rotary circulation (so-called "swirl") of the fluid in the chamber just before its ejection towards the outside of the pushbutton, causing the spraying of the fluid. .
Généralement, le conduit des chambres tourbillonnaires est central et son axe correspond à l'axe de symétrie de révolution de la chambre.Generally, the duct of the vortex chambers is central and its axis corresponds to the axis of symmetry of revolution of the chamber.
Suivant le mode de réalisation du bouton-poussoir qui est décrit dans la demande de brevet
Cette inclinaison de l'axe du conduit d'éjection par rapport à l'axe de la chambre tourbillonnaire perturbe et inhibe l'effet produit par la chambre tourbillonnaire, cet effet étant à l'origine de la pulvérisation du fluide en sortie du bouton-poussoir.This inclination of the axis of the ejection duct with respect to the axis of the vortex chamber disturbs and inhibits the effect produced by the vortex chamber, this effect being at the origin of the spraying of the fluid at the outlet of the control knob. button.
En effet, l'inclinaison de l'axe du conduit d'éjection crée une perturbation qui déséquilibre le mouvement du fluide injecté dans la chambre tourbillonnaire à grande vitesse. Ce mouvement se trouve ralenti, atténué, voire totalement laminé, à l'entrée du conduit d'éjection, ce qui conduit à l'obtention d'un jet en sortie du conduit, plutôt qu'à l'obtention de la pulvérisation recherchée.Indeed, the inclination of the axis of the ejection duct creates a disturbance which imbalances the movement of the fluid injected into the vortex chamber at high speed. This movement is slowed, attenuated or even completely rolled, at the entrance of the ejection duct, which leads to obtaining a jet at the outlet of the duct, rather than obtaining the desired spray.
La raison de l'obtention d'un jet plutôt que d'une pulvérisation est la suivante : le tourbillonnement du fluide se fait suivant un mouvement à symétrie axiale, et ce mouvement est obtenu dans la chambre tourbillonnaire autour de l'axe central de la chambre. Ce mouvement du fluide en rotation accélérée est fortement perturbé à l'approche du conduit d'éjection, du fait du changement brusque de direction imposé par l'orientation inclinée du conduit d'éjection par rapport à l'axe de la chambre.The reason for obtaining a jet rather than a spray is as follows: the fluid is swirled in an axially symmetrical motion, and this movement is obtained in the vortex chamber around the central axis of the fluid. bedroom. This movement of the fluid in accelerated rotation is strongly disturbed at the approach of the ejection duct, because of the abrupt change of direction imposed by the inclined orientation of the ejection duct relative to the axis of the chamber.
En pratique, pour un conduit d'éjection incliné selon un angle relativement faible (de l'ordre de 5 ° à 10 °) par rapport à l'axe de la chambre, on obtient une pulvérisation dégradée, non homogène, et un flux pulvérisé en forme de « demi-lune ». Et plus la valeur de l'angle d'inclinaison est élevée, plus la qualité de la pulvérisation se dégrade jusqu'à ce que la pulvérisation se transforme en un jet quasi-rectiligne.In practice, for an ejection duct inclined at a relatively small angle (of the order of 5 ° to 10 °) with respect to the axis of the chamber, there is obtained a degraded spraying, non-homogeneous, and a sprayed flow in the form of "half-moon". And the higher the angle of inclination value, the more the quality of the spraying deteriorates until the spray is transformed into a quasi-rectilinear jet.
Aussi, dans le cadre du mode de réalisation décrit dans la demande de brevet
Une telle solution ne permet toutefois pas d'atteindre les excellents résultats de pulvérisation obtenus avec une chambre tourbillonnaire classique à symétrie de révolution, avec un conduit central dont l'axe est confondu avec celui de la chambre et avec des conduits d'amenée de section identique.Such a solution, however, does not achieve the excellent spraying results obtained with a conventional vortex chamber with symmetry of revolution, with a central duct whose axis coincides with that of the chamber and with section supply ducts. identical.
La présente invention vise à pallier le problème de mauvaise qualité de pulvérisation qui est lié à l'inclinaison de l'axe du conduit d'éjection par rapport à l'axe de la chambre tourbillonnaire, en proposant une autre solution par rapport à celle consistant à réaliser deux canaux de sections différentes.The present invention aims to overcome the problem of poor quality of spray which is related to the inclination of the axis of the ejection duct relative to the axis of the vortex chamber, proposing another solution compared to that consisting of to realize two channels of different sections.
La présente invention concerne une buse pour la pulvérisation d'un fluide comprenant une chambre tourbillonnaire à symétrie de révolution autour d'un axe Z d'origine O, dans laquelle débouche au moins deux canaux d'amenée du fluide. La chambre est pourvue d'un conduit d'éjection dont l'axe est incliné par rapport à l'axe de symétrie de la chambre suivant un certain angle. Selon l'invention, le conduit 4 est réalisé de telle manière que son axe Δ présente une origine O'
- dont la position est décalée d'une certaine distance par rapport à l'origine O de l'axe de symétrie de la chambre, la distance étant dépendante de la valeur de l'angle d'inclinaison du conduit par rapport à l'axe de la chambre;
- selon une direction qui dépend de la position et de la section des canaux, et
- selon un sens qui est opposé à l'orientation du conduit.
- whose position is shifted a certain distance from the origin O of the axis of symmetry of the chamber, the distance being dependent on the value of the angle of inclination of the duct with respect to the axis of bedroom;
- in a direction that depends on the position and section of the channels, and
- in a direction that is opposed to the orientation of the conduit.
On comprendra par orientation du conduit le sens d'éjection du fluide de l'intérieur de la chambre vers l'extérieur de la buse de pulvérisation.It will be understood by orientation of the conduit the direction of ejection of the fluid from the inside of the chamber to the outside of the spray nozzle.
Le décalage de l'origine de l'axe du conduit d'éjection par rapport à l'origine de l'axe de la chambre permet de pallier le problème de perturbations du fluide tourbillonnant dans la chambre.The offset of the origin of the axis of the ejection duct relative to the origin of the axis of the chamber makes it possible to overcome the problem of perturbations of the swirling fluid in the chamber.
En effet, l'écoulement tourbillonnaire autour de l'axe de symétrie de la chambre se déstructure dans le conduit d'éjection à cause d'un changement de direction.Indeed, the swirling flow around the axis of symmetry of the chamber is destructured in the ejection duct due to a change of direction.
En rapprochant l'entrée du conduit d'éjection de l'un des canaux d'alimentation de la chambre, on obtient un écoulement tourbillonnaire non symétrique par rapport à l'axe de la chambre.By bringing the inlet of the ejection duct closer to one of the supply channels of the chamber, a swirling flow is obtained that is not symmetrical with respect to the axis of the chamber.
Cet écoulement reste toutefois symétrique par rapport à un certain axe.This flow remains symmetrical with respect to a certain axis.
Il convient donc de confondre l'axe du conduit avec cet axe, pour que l'écoulement tourbillonnaire soit symétrique par rapport à l'axe du conduite d'éjection.It is therefore appropriate to confuse the axis of the duct with this axis, so that the vortex flow is symmetrical with respect to the axis of the ejection duct.
La solution consistant à décaler l'origine du conduit par rapport à l'origine de l'axe de la chambre permet ainsi de retrouver un écoulement tourbillonnaire qui est symétrique par rapport à l'axe du conduit d'éjection. En effet, quand le conduit incliné est positionné dans l'axe de la chambre, l'écoulement tourbillonnaire est symétrique dans la chambre mais totalement dissymétrique dans le conduit d'éjection. Pour obtenir une pulvérisation uniforme, il faut que l'écoulement soit symétrique dans le conduit d'éjection. Et le décalage de l'origine du conduit d'éjection par rapport à l'origine de l'axe de la chambre permet d'obtenir un écoulement symétrique et tourbillonnaire dans le conduit.The solution of shifting the origin of the duct relative to the origin of the axis of the chamber thus makes it possible to find a vortex flow which is symmetrical with respect to the axis of the ejection duct. Indeed, when the inclined duct is positioned in the axis of the chamber, the swirling flow is symmetrical in the chamber but totally asymmetrical in the ejection duct. To obtain an even spray, the flow must be symmetrical in the ejection duct. And the offset of the origin of the ejection duct relative to the origin of the axis of the chamber makes it possible to obtain a symmetrical and swirling flow in the duct.
Selon un premier mode de réalisation de la buse selon l'invention, pour une valeur d'angle d'inclinaison qui est supérieure à 20°, la distance séparant les deux origine O et O' est au moins égale à 60 µm, et de préférence supérieure ou égale à 120 µm.According to a first embodiment of the nozzle according to the invention, for an angle of inclination value which is greater than 20 °, the distance separating the two origin O and O 'is at least equal to 60 μm, and preferably greater than or equal to 120 μm.
Selon une variante de réalisation, pour une valeur d'angle d'inclinaison de 60°, la distance séparant les deux origines O et O' est de 150 µm.According to a variant embodiment, for a tilt angle value of 60 °, the distance separating the two origins O and O 'is 150 μm.
Suivant une autre variante de réalisation, les canaux débouchent uniformément à la périphérie de la chambre.According to another embodiment, the channels open uniformly to the periphery of the chamber.
Suivant encore une autre variante de réalisation, les canaux présentent la même section.According to yet another embodiment, the channels have the same section.
Suivant encore une autre variante de réalisation, les canaux sont orientés suivant une direction tangente par rapport à la périphérie de ladite chambre.According to yet another embodiment, the channels are oriented in a direction tangent to the periphery of said chamber.
Suivant encore une autre variante de réalisation, les canaux présentent une forme courbe et convexe.According to yet another embodiment, the channels have a curved and convex shape.
Suivant encore une autre variante de réalisation, la chambre est formée d'une cavité tronconique pourvue d'un fond plat où débouche l'extrémité amont dudit conduit.According to yet another alternative embodiment, the chamber is formed of a frustoconical cavity provided with a flat bottom where opens the upstream end of said conduit.
La buse selon l'invention permet ainsi l'obtention de pulvérisations uniformes, avec des chambres reliées à des canaux dont l'axe est incliné par rapport à celui de l'axe de la chambre, pour pouvoir être mises en oeuvre dans les bouton-poussoirs destinés à la pulvérisation latérale de fluides.The nozzle according to the invention thus makes it possible to obtain uniform sprays, with chambers connected to channels whose axis is inclined with respect to that of the axis of the chamber, in order to be able to be used in the sprays. pushers for lateral spraying of fluids.
D'autres objets et avantages de l'invention apparaîtront au cours de la description qui suit, faite en référence aux dessins annexés, dans lesquels :
- la
figure 1 est une représentation schématique d'une buse selon l'invention en vue de profil, dans un référentiel XYZ ; et - la
figure 2 est une autre représentation schématique de la buse représentée sur lafigure 1 , en vue de profil, dans un référentiel XY.
- the
figure 1 is a schematic representation of a nozzle according to the invention in profile view, in an XYZ frame; and - the
figure 2 is another schematic representation of the nozzle shown on thefigure 1 , in profile view, in an XY repository.
La description qui va suivre concerne un mode de réalisation d'une buse selon l'invention qui est particulièrement adaptée à un bouton-poussoir conçu pour délivrer un fluide latéralement sous forme d'une pulvérisation, tel que décrit dans la demande de brevet français
Comme le montre la
Deux canaux 2 et 3 d'amenée d'un fluide débouchent ici dans cette chambre 1.Two
Le principe de l'invention s'appliquerait toutefois aussi à une buse pourvue de plus de deux canaux d'amenée.The principle of the invention would however also apply to a nozzle provided with more than two supply channels.
Comme on peut le voir sur les
De plus, les canaux 2 et 3 débouchent uniformément à la périphérie de la chambre 1. De cette manière, on favorise une répartition uniforme du fluide dans la chambre.In addition, the
Pour générer le mouvement tourbillonnant du fluide dans la chambre, on prévoit d'orienter les canaux 2 et 3 suivant une direction tangente à la périphérie de la chambre 1, comme le montre la
Pour encore mieux favoriser le mouvement tourbillonnant, il peut également être prévu de réaliser les canaux suivant une forme courbe et convexe. Ce mode de réalisation est suggéré par la
La chambre 1 est formée d'une cavité tronconique pourvue d'un fond plat 5 où débouche l'extrémité amont d'un conduit 4 d'éjection du fluide vers l'extérieur de la buse.The
Le conduit d'éjection 4 est constitué d'un élément tubulaire, et il présente un axe Δ qui est incliné suivant un angle α par rapport l'axe de symétrie Z de la chambre 1.The
Conformément à l'invention, le conduit 4 est réalisé de telle manière que son axe Δ présente une origine O' dont la position est décalée d'une distance d par rapport à l'origine O de l'axe de symétrie Z.According to the invention, the
La distance d dépend de la valeur de l'angle α d'inclinaison du conduit.The distance d depends on the value of the inclination angle α of the duct.
Conformément à l'invention, la direction définie par la droite reliant les deux origines O et O' dépend de la position et de la section des canaux 2 et 3, et enfin le sens d'orientation entre O et O' est opposé à l'orientation du conduit 4, c'est-à-dire au sens d'éjection du fluide vers l'extérieur de la buse de pulvérisation.According to the invention, the direction defined by the straight line connecting the two origins O and O 'depends on the position and the section of the
En effet, comme il a été vu ci avant, le flux tourbillonnaire créé dans la chambre est d'autant plus perturbé à l'entrée du conduit d'éjection que l'angle d'inclinaison du conduit est élevé. Aussi, il a été trouvé que plus l'angle d'inclinaison est élevé, et plus il faut chercher à augmenter le déséquilibre dans la chambre pour obtenir, en sortie du conduit d'éjection une pulvérisation homogène. Aussi, en rapprochant l'orifice amont du conduit d'éjection de l'extrémité de sortie de l'un des canaux 2 ou 3, la perturbation engendrée par l'inclinaison du conduit d'éjection est compensée par le déséquilibre créé au moyen d'un rapprochement de l'entrée du conduit avec la sortie de l'un des canaux.Indeed, as has been seen above, the vortex flow created in the chamber is all the more disturbed at the entrance of the ejection duct that the angle of inclination of the duct is high. Also, it has been found that the higher the angle of inclination, and the more we must seek to increase the imbalance in the chamber to obtain, at the outlet of the ejection duct a homogeneous spray. Also, by bringing the upstream orifice of the ejection duct of the outlet end of one of the
De plus, concernant la direction de la droite reliant O et O', elle dépend du débit du fluide introduit dans la chambre et du mouvement du flux tourbillonnaire qu'il génère dans la chambre. Concernant le sens vectoriel de O vers O', il convient de placer O' dans un sens opposé à l'orientation du conduit.Moreover, concerning the direction of the straight line connecting O and O ', it depends on the flow rate of the fluid introduced into the chamber and the movement of the vortex flow that it generates in the chamber. Concerning the vectorial direction of O towards O ', it is advisable to place O' in a direction opposite to the orientation of the conduit.
Conformément à l'invention, comme illustré sur la
Dans le cadre du mode de réalisation illustré, il est prévu que l'angle d'inclinaison α du conduit soit de 60°. La distance d entre O et O' est sensiblement de 150 µm (+/- 20 µm).In the context of the illustrated embodiment, it is expected that the angle of inclination α of the duct is 60 °. The distance d between O and O 'is substantially 150 μm (+/- 20 μm).
Une fois que la distance d a été déterminée, on comprend que le point O' peut être choisi sur un cercle C de distance d ayant pour origine O.Once the distance d has been determined, it is understood that the point O 'can be chosen on a circle C of distance d having origin O.
Comme on peut le comprendre de la
Cette droite D passant par O vient couper le cercle C en deux points.This line D passing through O cuts the circle C in two points.
Le point O' qui est choisi parmi ces deux points de telle manière que le vecteur 00' soit de sens opposé à celui de circulation du flux (sens du flux symbolisé par les flèches S), et particulièrement à son sens d'éjection du produit à partir de la chambre et via le conduit.The point O 'which is chosen from these two points in such a way that the vector 00' has a direction opposite to that of circulation of the flow (direction of flow symbolized by the arrows S), and particularly to its direction of ejection of the product from the bedroom and via the duct.
La description qui précède explique clairement de quelle manière la solution de l'invention permet d'obtenir une pulvérisation uniforme.The above description clearly explains how the solution of the invention provides a uniform spray.
Les valeurs d'angle α et de distance d qui ont été données dans le cadre de l'exemple de réalisation ne limite aucunement l'invention.The values of angle α and distance d which have been given in the context of the exemplary embodiment in no way limit the invention.
L'invention s'étend à toute buse reprenant les caractéristiques propres à l'invention.The invention extends to any nozzle incorporating the characteristics of the invention.
Claims (8)
- Nozzle for spraying a liquid comprising a swirl chamber (1) with symmetry of rotation around an axis (Z) with origin (0), which at least two inlet channels (2, 3) for said liquid open into, said chamber (1) being equipped with an ejection conduit (4), having its axis (Δ) tilted in relation to the axis of symmetry (Z) by an angle (α), characterised in that said conduit (4) is made so that its axis (Δ) has an origin (O') with a position offset by a distance (d) in relation to the origin (O) of the axis of symmetry (Z) which depends on the value of the tilting angle (α) of the conduit;- according to a direction that depends on the position and the cross-section of said channels, and- according to a direction that is opposite to the orientation of said conduit (4).
- Nozzle according to claim 1, characterised in that, for an angle value (α) greater than 20°, the distance (d) is at least equal to 60 µm, and preferably greater than 120 µm.
- Nozzle according to claim 1, characterised in that, for an angle value (α) of 60°, the distance (d) is substantially 150 µm.
- Nozzle according to any one of the preceding claims, characterised in that said channels (2, 3) open uniformly into the periphery of the chamber (1).
- Nozzle according to any one of the preceding claims, characterised in that said channels (2, 3) have the same cross-section.
- Nozzle according to any one of the preceding claims, characterised in that said channels are positioned in a direction that is tangential to the periphery of said chamber (1).
- Nozzle according to any one of the preceding claims, characterised in that said channels have a curved and convex shape.
- Nozzle according to any one of the preceding claims, characterised in that said chamber (1) is made up of a tapered cavity with a flat bottom (5) which the upstream end of said conduit (4) opens into.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0551291A FR2885820B1 (en) | 2005-05-18 | 2005-05-18 | ROOM NOZZLE TOURBILLONNAIRE |
PCT/FR2006/000981 WO2006123032A1 (en) | 2005-05-18 | 2006-05-02 | Nozzle comprising a swirl chamber |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1883478A1 EP1883478A1 (en) | 2008-02-06 |
EP1883478B1 true EP1883478B1 (en) | 2011-07-27 |
Family
ID=35432444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06764583A Active EP1883478B1 (en) | 2005-05-18 | 2006-05-02 | Nozzle comprising a swirl chamber |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080067265A1 (en) |
EP (1) | EP1883478B1 (en) |
CN (1) | CN101175573B (en) |
AT (1) | ATE517690T1 (en) |
BR (1) | BRPI0612913B1 (en) |
ES (1) | ES2369402T3 (en) |
FR (1) | FR2885820B1 (en) |
WO (1) | WO2006123032A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090034361A1 (en) * | 2007-05-14 | 2009-02-05 | Trang Duy K | Systems and methods for mixing fluids |
US20110303767A1 (en) | 2010-06-11 | 2011-12-15 | Scott Edward Smith | Dispenser having convergent flow path |
US9174229B2 (en) | 2010-06-11 | 2015-11-03 | The Procter & Gamble Company | Dispenser having non-frustro-conical funnel wall |
EP2969159B1 (en) | 2013-03-15 | 2019-10-02 | Neomend, Inc. | Centrifugal mixing spray nozzle |
CN109513334A (en) * | 2019-01-15 | 2019-03-26 | 西安西热锅炉环保工程有限公司 | A kind of smoke-gas wet desulfurization atomizer |
WO2022051664A1 (en) * | 2020-09-04 | 2022-03-10 | Baldino Mark Steven | Fire suppression system and method |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
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US966628A (en) * | 1906-07-14 | 1910-08-09 | Carl W Weiss | Burner for liquid fuel. |
US2905234A (en) * | 1955-05-09 | 1959-09-22 | Dortmund Hoerder Huttenunion A | Apparatus for the combustion of liquid fuels |
CA584712A (en) * | 1956-02-01 | 1959-10-06 | A. Gusmer | Apparatus and methods for spraying a mixture of a plurality of liquids |
US3004719A (en) * | 1957-09-26 | 1961-10-17 | Phillips Petroleum Co | Apparatus for spraying viscous liquids |
GB1160113A (en) * | 1965-08-06 | 1969-07-30 | Richard Terenc Macguire-Cooper | Improvements in or relating to Spray Nozzles |
US3506241A (en) * | 1967-07-06 | 1970-04-14 | Pittsburgh Railways Co | Tilt valve |
US3641808A (en) * | 1970-06-01 | 1972-02-15 | Corning Glass Works | Vortex generating sensor with secondary flow |
CH512723A (en) * | 1970-08-07 | 1971-09-15 | Contraves Ag | Level sensor |
US4260110A (en) * | 1977-02-18 | 1981-04-07 | Winfried Werding | Spray nozzle, devices containing the same and apparatus for making such devices |
US4480925A (en) * | 1980-11-10 | 1984-11-06 | Dietrich David E | Method of mixing fluids |
GB2239191B (en) * | 1989-11-28 | 1993-04-14 | Orkney Water Test Centre Limit | A method of coalescing a disperse phase within a continuous phase of a fluid mixture |
GB2251703B (en) * | 1991-01-11 | 1994-08-03 | Marconi Gec Ltd | Valve devices |
CN2187221Y (en) * | 1993-03-31 | 1995-01-11 | 胜利石油管理局钻井工艺研究院 | Swirl-nozzle |
FR2729091B1 (en) * | 1995-01-11 | 1997-05-30 | Valois | SPRAY NOZZLE |
US5711488A (en) * | 1995-10-13 | 1998-01-27 | The Procter & Gamble Company | High pressure swirl atomizer |
DE19815795A1 (en) * | 1998-04-08 | 1999-10-14 | Bosch Gmbh Robert | Atomizer disc and fuel injector with atomizer disc |
DE19907899A1 (en) * | 1999-02-24 | 2000-08-31 | Bosch Gmbh Robert | Fuel injector |
AR028747A1 (en) * | 2000-06-23 | 2003-05-21 | Norton Health Care Ltd | DEGREME FOR DRY POWDER INHALER OPERATED BY BREATHING, A DRY POWDER INHALER AND A DRY POWDER DEFAULT METHOD. |
DE10033781C1 (en) * | 2000-07-12 | 2001-12-06 | Lechler Gmbh & Co Kg | Dual rotation spray jet has common feed channel leading tangentially to opposing rotation chambers on either side of its center axis |
US20050054506A1 (en) * | 2003-07-30 | 2005-03-10 | Bradley Bruce J. | Microbial concentration system |
US7597275B2 (en) * | 2005-07-25 | 2009-10-06 | Isothermal Systems Research, Inc. | Methods and apparatus for atomization of a liquid |
US20070194146A1 (en) * | 2005-08-24 | 2007-08-23 | Advanced Specialized Technologies, Inc. | A liquid atomizing nozzle |
-
2005
- 2005-05-18 FR FR0551291A patent/FR2885820B1/en not_active Expired - Fee Related
-
2006
- 2006-05-02 WO PCT/FR2006/000981 patent/WO2006123032A1/en not_active Application Discontinuation
- 2006-05-02 AT AT06764583T patent/ATE517690T1/en not_active IP Right Cessation
- 2006-05-02 ES ES06764583T patent/ES2369402T3/en active Active
- 2006-05-02 CN CN2006800163820A patent/CN101175573B/en active Active
- 2006-05-02 BR BRPI0612913A patent/BRPI0612913B1/en active IP Right Grant
- 2006-05-02 EP EP06764583A patent/EP1883478B1/en active Active
-
2007
- 2007-11-15 US US11/940,580 patent/US20080067265A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
BRPI0612913A2 (en) | 2010-12-07 |
CN101175573B (en) | 2010-07-28 |
ES2369402T3 (en) | 2011-11-30 |
BRPI0612913B1 (en) | 2018-05-08 |
WO2006123032A1 (en) | 2006-11-23 |
ATE517690T1 (en) | 2011-08-15 |
FR2885820A1 (en) | 2006-11-24 |
CN101175573A (en) | 2008-05-07 |
US20080067265A1 (en) | 2008-03-20 |
FR2885820B1 (en) | 2007-06-22 |
EP1883478A1 (en) | 2008-02-06 |
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