EP0650764B1 - Spray device - Google Patents
Spray device Download PDFInfo
- Publication number
- EP0650764B1 EP0650764B1 EP94402473A EP94402473A EP0650764B1 EP 0650764 B1 EP0650764 B1 EP 0650764B1 EP 94402473 A EP94402473 A EP 94402473A EP 94402473 A EP94402473 A EP 94402473A EP 0650764 B1 EP0650764 B1 EP 0650764B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- core
- face
- outer element
- inner element
- 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.)
- Expired - Lifetime
Links
- 239000007921 spray Substances 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims 2
- 238000005507 spraying Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 235000004251 balanced diet Nutrition 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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
- B05B1/3431—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 the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3436—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 the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
Definitions
- the present invention relates to a spraying device.
- Fluids and in particular liquids are taken from the tank then sprayed as a micro mist droplets after dispersion at the level of a head comprising a expansion chamber where the distributor ejection opening opens and which communicates by at least one exhaust duct with a nozzle.
- the nozzle consists of an insert which is generally cup-shaped with a central hole and which is mounted on the head.
- This nozzle defines with the elements of the head on which it is supported by a network of vortex canals.
- Assembly faults are mainly due to improper positioning of the nozzle which is not caught or compensated by corresponding elements of the head due to their rigidity and irremovable nature.
- the object of the present invention is to solve this problem technique satisfactorily.
- a spraying device intended to be mounted on a fluids connected to a tank; of the type comprising a head provided an expansion chamber into which the ejection orifice opens said distributor; and which communicates by at least one conduit outlet with a nozzle, characterized in that said nozzle is consisting of an articulated internal element which is at least partially housed in the exhaust pipe and which includes a central core and a peripheral sleeve disposed coaxially and delimiting between them a distribution enclosure to the interior of the exhaust duct, said core and sleeve being connected by at least one elastically deformable transverse fin for allow relative displacement of said core, and an external element fixed in support waterproof against said internal element to define between their surfaces respective in contact with a network of vortex channels communicating with the discharge pipe and opening to the outside through a spray orifice formed through the external element.
- said peripheral sleeve consists of a cylindrical front part extending backwards by an annular radial shoulder which comes to bear in a corresponding recess in the inner wall of the duct evacuation while said central core has one end front provided with a contact face with the external element which extends in a plane substantially perpendicular to the longitudinal axis of the internal element and a rear end with a tapered or rounded profile.
- the external element comprises a housing cylindrical internal adapted to receive the front part of said sleeve; the side wall of said housing ending towards the rear by a fixing flange on the internal wall of the exhaust duct which abuts against the radial shoulder of said element sleeve internal.
- said element external is formed by a cup whose flat rear face comes in bearing contact against the respective front faces of the core and the muff.
- the sleeve of the element internal is made in one piece with the head and in this case, the fins are provided at the rear of the core and are confused with the wall of the expansion chamber.
- said network of channels vortex is delimited on the one hand by the front and rear faces of the internal element and the external element respectively, and, on the other part, by an axial crown interspersed with grooves made on the face front of the core of the internal element or on the rear face of the element external.
- Said crown forms a spacer or a contact stop between the internal element and the external element and borders a central cavity supplied from the discharge conduit by said grooves and which opens directly to the outside through the spray orifice.
- said grooves cross tangentially said crown so as to produce turbulence in said cavity central.
- said axial ring is produced on the front face of said core of the internal element and the bottom of the cavity central is located in the plane containing the front edge of said sleeve.
- said axial ring is produced on the rear face of said external element.
- the length of the core is greater than that of the sleeve so that its rear end projects inside from the exhaust duct towards the expansion chamber.
- the quality of the spraying (orientation, homogeneity %) is significantly improved since the swirling and turbulent movements of fluids are no longer disturbed.
- the path traveled by the fluids between the ejection orifice of the distributor and the spray orifice is thus more confined, which provides a homogeneous and more balanced diet of grooves and the central cavity without causing a pressure drop.
- the internal and external elements making up the the invention are very easy to carry out according to. traditional processes. Their assembly with the head is very simple and without risk of error or default.
- the spraying device of the invention as shown in the figures is intended to be mounted on a pump connected to a liquid tank (not shown).
- the embodiment shown in Figure 1 includes a head 1 adapted to cap the tank and provided with a trigger 10 into which the pump ejection orifice opens.
- the expansion chamber 10 communicates through at least one conduit discharge 11 with a spray nozzle 2.
- Manual pressure on the upper face of head 1 causes emission from the nozzle of a mist in the form of a jet of sprayed micro droplets.
- the nozzle 2 consists of an internal element 21 and an element external 22.
- the internal element 21 is at least partially housed in the conduit 11.
- the external element 22 is fixed in sealed support against the element internal 21 at the outlet of circuit 11, to define between their surfaces respective in contact, a network of vortex channels which communicates with conduit 11 and which opens to the outside via a spray orifice 220 formed through the internal element 21.
- the external element 22 is provided with a front face 22a in the form of deflector with a predetermined angular opening according to the orientation sought for the jet.
- This orientation also depends on the geometry of the channels and from that of spray port 220.
- the internal element 21 is articulated so as to ensure cladding correct of the external element 22 and thus guarantee an assembly without leak in the vortex channels.
- the internal element 21 comprises a central core 211 and a peripheral sleeve 212 arranged coaxially with respect to the nucleus 211.
- the sleeve 212 is at least partially cylindrical and surrounds the core 211 at a distance so as to delimit between them an enclosure of distribution 110 of annular section inside the duct 11.
- the core 211 and the sleeve 212 are connected by at least one and, preferably three transverse fins 210 (see also Figures 2a and 2b).
- the fins 210 are resiliently deformable so as to form a joint allowing relative movement of the core 211 relative to sleeve 212.
- the sleeve 212 remains stationary by being secured to the wall internal of duct 11.
- the travel of the core 211 is of small amplitude and allows compensate for any misalignment in element plating external 22 or to correct a manufacturing defect.
- the three fins connect symmetrically (at angular intervals 120 °) the respective front parts of the core 211 and the sleeve 212.
- the core 211 therefore produces in combination with the fins 210 a spring effect which gives flexibility to the assembly and avoids pressure losses in the channels.
- the peripheral sleeve 212 as shown in Figures 2a and 2b consists of a cylindrical front part 212a extending backwards by an annular radial shoulder 212b.
- the radial shoulder 212b comes into wedging support in a 111 corresponding recess, forming a stop, which is formed in the inner wall of the duct 11.
- the internal face of the shoulder 212b has a frustoconical profile which converges in the conduit 11, the liquid flows coming from the expansion chamber 10 towards the distribution enclosure 110.
- the passage 112 of communication between the duct 11 and the chamber 10 is produced with a divergent profile.
- central core 212 has a cylindrical-conical profile with a rear end 211b tapered and / or convex.
- the length of the core is greater than that of the sleeve 212 of so that its rear end 211b protrudes inside the passage 112 towards chamber 10 to divide the flows. in from the distributor.
- the front end 211a of the core 211 is provided with a contact face with the external element 22. This face of contact extends in a plane substantially perpendicular to the axis longitudinal X common to the internal element 21, to the external element 22 and to conduit 11.
- the external element as shown in Figures 3a and 3b has a cylindrical internal housing 221 adapted to receive the front part 212a of the sleeve 212.
- the external face of the front part 212a of the sleeve 212 seals the internal face of the housing 221 of the external element 21.
- the side wall of the housing 221 ends rearwards by a 222 mounting flange which allows snapping behind a rod 113 produced on the internal wall of the duct 11 or in the absence of a rod, direct anchoring in the internal wall of said duct 11.
- the collar 222 abuts backwards against the shoulder 212b of the sleeve 212.
- the network of eddy channels is delimited on the one hand by the front faces 211a and rear 22b respectively of the internal element 21 and the element external 22 and, on the other hand, by a crown 20 of axis X, interspersed with grooves 200.
- the crown 20 is formed on the front face 211a of the core 211 ( Figure 5b) or on the rear face 22b of the external element 22 ( Figure 3a).
- the crown 20 thus forms a spacer or stop contact between the internal element 21 and the external element 22 and borders a central cavity 12 supplied from the conduit 11 and more precisely to from the distribution enclosure 110 through the grooves 200.
- the cavity central 12 opens directly to the outside through the opening 220 of spray.
- the conduit 11 and the enclosure 110 communicate with the cavity central 12 through the peripheral passages located between the fins 210, which increases the turbulence of the flows.
- the grooves 200 cross the side of the crown 20 according to predetermined directions so as to establish a turbulent regime and swirling inside the cavity 12.
- the inclination of the grooves is such that they are tangent to the inner periphery of the crown 20 ..
- the crown 20 is formed on the face front 211a of the core 211 and the bottom of the central cavity 12 is located in the plane containing the front edge 212a of the sleeve 212.
- the front face 211a of the core projects at rest by compared to the front edge 212a but it is depressed by deformation elastic of the fins 210 when the external element is supported 22.
- the external element 22 is formed of a cup of which the front face is concave and the flat rear face comes into bearing contact both against the respective front faces of the core 211 and of the sleeve 212.
- This cup is retained by snapping on its free edge behind a rod 113 ′ produced on the internal wall of the duct 11.
- the external element 22 is in the form of a cup as in FIG. 4 and the sleeve of the internal element 21 is made in one piece with the head 1.
- the fins 210 are then provided at the rear of the core 211 and are confused with the wall of the expansion chamber 10 while the crown 20 is produced on the front face 211a of the core 211.
- the wall separating the chamber 10 from the conduit 11 is, for example, perforated to define the fins 210 and the wall deforms elastically when the core 211 is pushed in.
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- Catching Or Destruction (AREA)
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- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
La présente invention concerne un dispositif de pulvérisation.The present invention relates to a spraying device.
Il existe déjà des dispositifs de pulvérisation traditionnels sous forme de bouton poussoir qui sont destinés à être montés sur des distributeurs de fluides (pompes, valves..) raccordés à des réservoirs .There are already traditional spraying devices under form of push button which are intended to be mounted on fluid distributors (pumps, valves, etc.) connected to tanks.
Les fluides et notamment les liquides sont prélevés dans le réservoir puis pulvérisés sous forme d'un brouillard de micro gouttelettes après dispersion au niveau d'une tête comprenant une chambre de détente où débouche l'orifice d'éjection du distributeur et qui communique par au moins un conduit d'évacuation avec une buse.Fluids and in particular liquids are taken from the tank then sprayed as a micro mist droplets after dispersion at the level of a head comprising a expansion chamber where the distributor ejection opening opens and which communicates by at least one exhaust duct with a nozzle.
La buse est constituée d'une pièce rapportée qui est généralement en forme de coupelle avec un orifice central et qui est montée sur la tête.The nozzle consists of an insert which is generally cup-shaped with a central hole and which is mounted on the head.
Cette buse définit avec les éléments de la tête sur lesquels elle s'appuie, un réseau de canaux tourbillonnaires.This nozzle defines with the elements of the head on which it is supported by a network of vortex canals.
Or, il arrive fréquemment que l'assemblage de la buse et de la tête soit défectueux et que par suite le réseau de canaux comporte des fuites entraínant des pertes de charge ou des détériorations des caractéristiques du brouillard pulvérisé (asymétrie de la projection, jets directs, augmentation et dispersion de la taille des micro gouttelettes).However, it often happens that the assembly of the nozzle and the head is defective and that consequently the network of channels contains leaks resulting in pressure losses or deterioration of the characteristics spray mist (asymmetry of the projection, direct jets, increase and dispersion of the size of the micro droplets).
Les défauts de l'assemblage sont principalement dus à un mauvais positionnement de la buse qui n'est pas rattrapé ni compensé par les éléments correspondants de la tête en raison de leur rigidité et de leur caractère inamovible.Assembly faults are mainly due to improper positioning of the nozzle which is not caught or compensated by corresponding elements of the head due to their rigidity and irremovable nature.
La présente invention a pour but de résoudre ce problème technique de manière satisfaisante.The object of the present invention is to solve this problem technique satisfactorily.
Ce but est atteint conformément à l'invention au moyen d'un dispositif de pulvérisation destiné à être monté sur un distributeur de fluides raccordé à un réservoir ; du type comprenant une tête pourvue d'une chambre de détente dans laquelle débouche l'orifice d'éjection dudit distributeur ; et qui communique par au moins un conduit d'évacuation avec une buse, caractérisé en ce que ladite buse est constituée d'un élément interne articulé qui est au moins partiellement logé dans le conduit d'évacuation et qui comprend un noyau central et un manchon périphérique disposé coaxialement et délimitant entre eux une enceinte de distribution à l'intérieur du conduit d'évacuation, lesdits noyau et manchon étant reliés par au moins une ailette transversale déformable de façon élastique pour permettre un débattement relatif dudit noyau, et d'un élément externe fixé en appui étanche contre ledit élément interne pour définir entre leurs surfaces respectives en contact un réseau de canaux tourbillonnaires communiquant avec le conduit d'évacuation et débouchant à l'extérieur par un orifice de pulvérisation ménagé au travers de l'élément externe.This object is achieved in accordance with the invention by means of a spraying device intended to be mounted on a fluids connected to a tank; of the type comprising a head provided an expansion chamber into which the ejection orifice opens said distributor; and which communicates by at least one conduit outlet with a nozzle, characterized in that said nozzle is consisting of an articulated internal element which is at least partially housed in the exhaust pipe and which includes a central core and a peripheral sleeve disposed coaxially and delimiting between them a distribution enclosure to the interior of the exhaust duct, said core and sleeve being connected by at least one elastically deformable transverse fin for allow relative displacement of said core, and an external element fixed in support waterproof against said internal element to define between their surfaces respective in contact with a network of vortex channels communicating with the discharge pipe and opening to the outside through a spray orifice formed through the external element.
Selon un premier mode de réalisation, ledit manchon périphérique est constitué d'une partie avant cylindrique se prolongeant vers l'arrière par un épaulement radial annulaire qui vient en appui dans un évidement correspondant ménagé dans la paroi interne du conduit d'évacuation tandis que ledit noyau central comporte une extrémité avant pourvue d'une face de contact avec l'élément externe qui s'étend dans un plan sensiblement perpendiculaire à l'axe longitudinal de l'élément interne et une extrémité arrière à profil effilé ou arrondi.According to a first embodiment, said peripheral sleeve consists of a cylindrical front part extending backwards by an annular radial shoulder which comes to bear in a corresponding recess in the inner wall of the duct evacuation while said central core has one end front provided with a contact face with the external element which extends in a plane substantially perpendicular to the longitudinal axis of the internal element and a rear end with a tapered or rounded profile.
Dans ces conditions, l'élément externe comporte un logement interne cylindrique adapté pour recevoir la partie avant dudit manchon; la paroi latérale dudit logement se terminant vers l'arrière par une collerette de fixation sur la paroi interne du conduit d'évacuation qui vient en butée contre l'épaulement radial dudit manchon de l'élément interne.Under these conditions, the external element comprises a housing cylindrical internal adapted to receive the front part of said sleeve; the side wall of said housing ending towards the rear by a fixing flange on the internal wall of the exhaust duct which abuts against the radial shoulder of said element sleeve internal.
Selon un second mode de réalisation de l'invention, ledit élément externe est formé d'une coupelle dont la face arrière plane vient en contact d'appui contre les faces avant respectives du noyau et du manchon.According to a second embodiment of the invention, said element external is formed by a cup whose flat rear face comes in bearing contact against the respective front faces of the core and the muff.
Selon un troisième mode de réalisation, le manchon de l'élément interne est réalisé d'une seule pièce avec la tête et dans ce cas, les ailettes sont prévues à l'arrière du noyau et sont confondues avec la paroi de la chambre de détente.According to a third embodiment, the sleeve of the element internal is made in one piece with the head and in this case, the fins are provided at the rear of the core and are confused with the wall of the expansion chamber.
Selon une autre caractéristique, ledit réseau de canaux tourbillonnaires est délimité d'une part par les faces avant et arrière respectivement de l'élément interne et de l'élément externe et, d'autre part, par une couronne axiale entrecoupée de gorges réalisée sur la face avant du noyau de l'élément interne ou sur la face arrière de l'élément externe. La dite couronne forme une entretoise ou une butée de contact entre l'élément interne et l'élément externe et borde une cavité centrale alimentée à partir du conduit d'évacuation par lesdites gorges et qui débouche directement à l'extérieur par l'orifice de pulvérisation.According to another characteristic, said network of channels vortex is delimited on the one hand by the front and rear faces of the internal element and the external element respectively, and, on the other part, by an axial crown interspersed with grooves made on the face front of the core of the internal element or on the rear face of the element external. Said crown forms a spacer or a contact stop between the internal element and the external element and borders a central cavity supplied from the discharge conduit by said grooves and which opens directly to the outside through the spray orifice.
De plus, lesdites gorges traversent de façon tangentielle ladite couronne de façon à produire des turbulences dans ladite cavité centrale.In addition, said grooves cross tangentially said crown so as to produce turbulence in said cavity central.
Selon une première variante, ladite couronne axiale est réalisée sur la face avant dudit noyau de l'élément interne et le fond de la cavité centrale est situé dans le plan contenant le bord avant dudit manchon.According to a first variant, said axial ring is produced on the front face of said core of the internal element and the bottom of the cavity central is located in the plane containing the front edge of said sleeve.
Selon une autre variante, ladite couronne axiale est réalisée sur la face arrière dudit élément externe.According to another variant, said axial ring is produced on the rear face of said external element.
De préférence, la longueur du noyau est supérieure à celle du manchon de telle sorte que son extrémité arrière fait saillie à l'intérieur du conduit d'évacuation en direction de la chambre de détente.Preferably, the length of the core is greater than that of the sleeve so that its rear end projects inside from the exhaust duct towards the expansion chamber.
Grâce à l'invention, la qualité de la pulvérisation (orientation, homogénéité...) est améliorée de façon importante puisque les mouvements tourbillonnaires et turbulents des fluides ne sont plus perturbés.Thanks to the invention, the quality of the spraying (orientation, homogeneity ...) is significantly improved since the swirling and turbulent movements of fluids are no longer disturbed.
Le chemin parcouru par les fluides entre l'orifice d'éjection du distributeur et l'orifice de pulvérisation est ainsi plus confiné, ce qui permet d'obtenir une alimentation homogène et plus équilibrée des gorges et de la cavité centrale sans provoquer de perte de charge.The path traveled by the fluids between the ejection orifice of the distributor and the spray orifice is thus more confined, which provides a homogeneous and more balanced diet of grooves and the central cavity without causing a pressure drop.
Les éléments interne et externe constitutifs du dispositif de l'invention sont très faciles à réaliser selon des. procédés traditionnels. Leur assemblage avec la tête est très simple et sans risque d'erreur ou de défaut.The internal and external elements making up the the invention are very easy to carry out according to. traditional processes. Their assembly with the head is very simple and without risk of error or default.
L'invention sera mieux comprise à la lecture de la description qui va suivre accompagnée des dessins sur lesquels :
- la figure 1 représente une vue en coupe d'un premier mode de réalisation du dispositif de pulvérisation selon l'invention ;
- les figures 2a et 2b représentent respectivement des vues en coupe et de face du premier mode de réalisation de l'élément interne de la buse selon l'invention;
- les figures 3a et 3b représentent respectivement des vues en coupe et de face du premier mode de réalisation de l'élément externe de la buse selon l'invention;
- la figure 4 représente une vue en coupe d'un second mode de réalisation du dispositif de l'invention ;
- les figures 5a et 5b représentent respectivement des vues en coupe et de face de l'élément interne de la buse selon l'invention ; et,
- les figures 6a et 6b représentent respectivement des vues en coupe transversale et selon AA d'un troisième mode de réalisation de l'invention.
- Figure 1 shows a sectional view of a first embodiment of the spraying device according to the invention;
- Figures 2a and 2b respectively show sectional and front views of the first embodiment of the internal element of the nozzle according to the invention;
- Figures 3a and 3b respectively show sectional and front views of the first embodiment of the external element of the nozzle according to the invention;
- Figure 4 shows a sectional view of a second embodiment of the device of the invention;
- Figures 5a and 5b respectively show sectional and front views of the internal element of the nozzle according to the invention; and,
- Figures 6a and 6b respectively show cross-sectional views and according to AA of a third embodiment of the invention.
Le dispositif de pulvérisation de l'invention tel que représenté sur les figures est destiné à être monté sur une pompe raccordée à un réservoir de liquide (non représentés).The spraying device of the invention as shown in the figures is intended to be mounted on a pump connected to a liquid tank (not shown).
Le mode de réalisation représenté sur la figure 1 comprend une
tête 1 adaptée pour coiffer le réservoir et pourvue d'une chambre de
détente 10 dans laquelle débouche l'orifice d'éjection de la pompe. La
chambre de détente 10 communique par au moins un conduit
d'évacuation 11 avec une buse de pulvérisation 2.The embodiment shown in Figure 1 includes a
Une pression manuelle sur la face supérieure de la tête 1 provoque
l'émission à partir de la buse d'un brouillard sous forme d'un jet de
micro gouttelettes pulvérisées.Manual pressure on the upper face of
La buse 2 est constituée d'un élément interne 21 et d'un élément
externe 22.The
L'élément interne 21 est au moins partiellement logé dans le
conduit 11.The
L'élément externe 22 est fixé en appui étanche contre l'élément
interne 21 au débouché du circuit 11, pour définir entre leurs surfaces
respectives en contact, un réseau de canaux tourbillonnaires qui
communique avec le conduit 11 et qui débouche à l'extérieur par un
orifice de pulvérisation 220 ménagé au travers de l'élément interne 21.The
L'élément externe 22 est pourvu d'une face avant 22a en forme de
déflecteur avec une ouverture angulaire prédéterminée en fonction de
l'orientation recherchée pour le jet.The
Cette orientation dépend également de la géométrie des canaux et
de celle de l'orifice de pulvérisation 220. This orientation also depends on the geometry of the channels and
from that of
L'élément interne 21 est articulé de façon à assurer un placage
correct de l'élément externe 22 et de garantir ainsi un assemblage sans
fuite au niveau des canaux tourbillonnaires.The
A cet effet, l'élément interne 21 comprend un noyau central 211 et
un manchon périphérique 212 disposé coaxialement par rapport au
noyau 211.To this end, the
Le manchon 212 est au moins partiellement cylindrique et entoure
le noyau 211 à distance de façon à délimiter entre eux une enceinte de
distribution 110 de section annulaire à l'intérieur du conduit
d'évacuation 11.The
Le noyau 211 et le manchon 212 sont reliés par au moins une et,
de préférence, trois ailettes transversales 210 (voir aussi figures 2a et
2b). Les ailettes 210 sont déformables de façon élastique de façon à
former une articulation permettant un débattement relatif du noyau 211
par rapport au manchon 212.The
Le manchon 212 reste immobile en étant solidarisé avec la paroi
interne du conduit 11.The
Le débattement du noyau 211 est de faible amplitude et permet de
compenser un éventuel défaut d'alignement au placage de l'élément
externe 22 ou de rattraper un défaut de fabrication.The travel of the
Les trois ailettes relient symétriquement (à intervalles angulaires
de 120°) les parties avant respectives du noyau 211 et du manchon 212.The three fins connect symmetrically (at angular intervals
120 °) the respective front parts of the
Le noyau 211 produit donc en combinaison avec les ailettes 210
un effet ressort qui donne une souplesse à l'assemblage et évite les
pertes de charge dans les canaux.The
Le manchon périphérique 212 tel que représenté sur les figures 2a
et 2b est constitué d'une partie avant cylindrique 212a se prolongeant
vers l'arrière par un épaulement radial annulaire 212b.The
L'épaulement radial 212b vient en appui de calage dans un
évidement 111 correspondant, formant butée, qui est ménagé dans la
paroi interne du conduit 11.The
La face interne de l'épaulement 212b a un profil tronconique qui
fait converger dans le conduit 11, les flux de liquide en provenance de
la chambre de détente 10 vers l'enceinte de distribution 110.The internal face of the
Pour favoriser ce phénomène, le passage 112 de communication
entre le conduit 11 et la chambre 10 est réalisé avec un profil divergent. To favor this phenomenon, the
De plus, le noyau central 212 a un profil cylindro-conique avec
une extrémité arrière 211b effilée et/ou convexe.In addition, the
La longueur du noyau est supérieure à celle du manchon 212 de
telle sorte que son extrémité arrière 211b fasse saillie à l'intérieur du
passage 112 en direction de la chambre 10 pour diviser les flux. en
provenance du distributeur. L'extrémité avant 211a du noyau 211 est
pourvue d'une face de contact avec l'élément externe 22. Cette face de
contact s'étend dans un plan sensiblement perpendiculaire à l'axe
longitudinal X commun à l'élément interne 21, à l'élément externe 22 et
au conduit 11.The length of the core is greater than that of the
L'élément externe tel que représenté sur les figures 3a et 3b
comporte un logement interne cylindrique 221 adapté pour recevoir la
partie avant 212a du manchon 212. La face externe de la partie avant
212a du manchon 212 épouse de manière étanche la face interne du
logement 221 de l'élément externe 21.The external element as shown in Figures 3a and 3b
has a cylindrical
La paroi latérale du logement 221 se termine vers l'arrière par une
collerette 222 de fixation qui permet l'encliquetage derrière un jonc
113 réalisé sur la paroi interne du conduit 11 ou en l'absence de jonc,
l'ancrage direct dans la paroi interne dudit conduit 11. La collerette 222
vient en butée vers l'arrière contre l'épaulement 212b du manchon 212.The side wall of the
Comme représenté sur les figures 3a, 3b et 5a, 5b le réseau de
canaux tourbillonnaires est délimité d'une part par les faces avant 211a
et arrière 22b respectivement de l'élément interne 21 et de l'élément
externe 22 et, d'autre part, par une couronne 20 d'axe X, entrecoupée de
gorges 200. La couronne 20 est réalisée sur la face avant 211a du noyau
211 (figure 5b) ou bien sur la face arrière 22b de l'élément externe 22
(figure 3a). La couronne 20 forme ainsi une entretoise ou butée de
contact entre l'élément interne 21 et l'élément externe 22 et borde une
cavité centrale 12 alimentée à partir du conduit 11 et plus précisément à
partir de l'enceinte de distribution 110 par les gorges 200. La cavité
centrale 12 débouche directement à l'extérieur par l'orifice 220 de
pulvérisation.As shown in Figures 3a, 3b and 5a, 5b the network of
eddy channels is delimited on the one hand by the front faces 211a
and rear 22b respectively of the
Le conduit 11 et l'enceinte 110 communiquent avec la cavité
centrale 12 par le biais des passages périphériques situés entre les
ailettes 210, ce qui augmente la turbulence des flux. The
Les gorges 200 traversent le flanc de la couronne 20 selon des
directions prédéterminées de façon à établir un régime turbulent et
tourbillonnaire à l'intérieur de la cavité 12.The
De préférence, l'inclinaison des gorges est telle qu'elles sont
tangentes au pourtour interne de la couronne 20..Preferably, the inclination of the grooves is such that they are
tangent to the inner periphery of the
Sur les figures 4, 5a et 5b la couronne 20 est réalisée sur la face
avant 211a du noyau 211 et le fond de la cavité centrale 12 est situé
dans le plan contenant le bord avant 212a du manchon 212.In Figures 4, 5a and 5b the
De cette façon, la face avant 211a du noyau fait saillie au repos par
rapport au bord avant 212a mais elle est enfoncée par déformation
élastique des ailettes 210 lors de la mise en appui de l'élément externe
22.In this way, the
Sur la figure 4, l'élément externe 22 est formé d'une coupelle dont
la face avant est concave et la face arrière plane vient en contact d'appui
à la fois contre les faces avant respectives du noyau 211 et du manchon
212.In FIG. 4, the
Cette coupelle est retenue par encliquetage de son bord libre
derrière un jonc 113' réalisé sur la paroi interne du conduit 11.This cup is retained by snapping on its free edge
behind a
Dans le mode de réalisation des figures 6a et 6b, l'élément externe
22 est en forme de coupelle comme sur la figure 4 et le manchon de
l'élément interne 21 est réalisé d'une seule pièce avec la tête 1.In the embodiment of Figures 6a and 6b, the
Les ailettes 210 sont alors prévues à l'arrière du noyau 211 et sont
confondues avec la paroi de la chambre de détente 10 tandis que la
couronne 20 est réalisée sur la face avant 211a du noyau 211.The
La paroi séparant la chambre 10 du conduit 11 est, par exemple,
ajourée pour définir les ailettes 210 et la paroi se déforme élastiquement
lors de l'enfoncement du noyau 211.The wall separating the
Claims (22)
- A spray device for mounting on a fluid dispenser connected to a tank; the device being of the type comprising a head (1) provided with an expansion chamber (10) into which the outlet orifice of said dispenser opens out; the expansion chamber (10) communicating with a nozzle (2) via at least one outlet duct (11);
the device being characterized in that said nozzle is constituted firstly by a hinged inner element (21) which is at least partially received in the outlet duct (11) and which comprises a central core (211) and a peripheral sleeve (212) disposed coaxially and defining between them a dispensing enclosure (110) inside the outlet duct (11), said core and sleeve being interconnected by at least one transverse fin (210) that is elastically deformable to enable said core (211) to move relative to said sleeve, and secondly by an outer element (22) fixed to bear in sealed manner against said inner element (21) so as to define between their respective contacting surfaces a network of swirl-inducing channels communicating with the outlet duct (11) and opening to the outside via a spray orifice (220) formed through the outer element (22). - A device according to claim 1, characterized in that said dispensing enclosure (110) is annular in section.
- A device according to claim 1 or 2, characterized in that said peripheral sleeve (212) is cylindrical, at least in part.
- A device according to any preceding claim, characterized in that said peripheral sleeve (212) is constituted by a cylindrical front portion (212a) extended towards its back by a radial annular shoulder (212b) that bears against the inside of a corresponding recess (111) formed in the inner wall of the outlet duct (11).
- A device according to claim 4, characterized in that the inside face of the radial shoulder (212b) of the sleeve (212) is chamfered.
- A device according to any preceding claim, characterized in that said central core (211) is cylindro-conical.
- A device according to any preceding claim, characterized in that said central core (211) includes a front end (211a) provided with a contact face for contacting the outer element (22) which extends in a plane that is substantially perpendicular to the longitudinal axis (X) of the inner element (21), and a back end (211b) having a profile that is tapering and/or convex.
- A device according to any preceding claim, characterized in that transverse fins (210) symmetrically interconnect the respective front portions (211a, 212a) of the core (211) and of the sleeve (212).
- A device according to any preceding claim, characterized in that said outer element (22) is formed by a cup whose plane back face comes into bearing contact against the respective front faces of the core (211) and of the sleeve (212).
- A device according to claims 4 and 8, characterized in that said outer element (22) includes a cylindrical inner housing (221) adapted to receive the front portion (212a) of said sleeve (212); the side wall of said housing (221) terminating towards its back end in a collar (222) which is for fixing against the inside wall of the outlet duct (11) and which comes into abutment against the radial shoulder (212b) of said sleeve of the inner element (21).
- A device according to claim 10, characterized in that the outside face of the front portion (212a) of the sleeve of the inner element (21) fits closely in leakproof manner against the inside face of the housing (221) of the outer element (22).
- A device according to any preceding claim, characterized in that said network of swirl-inducing channels is defined firstly by the front and back faces respectively of the inner element (21) and of the outer element (22), and secondly by an axial ring (20) split up by grooves (200) formed on the front face (211a) of the core (211) of the inner element (21) or on the back face of the outer element (22).
- A device according to claim 12, characterized in that said ring (20) forms a contact abutment between the inner element (21) and the outer element (22) and surrounds a central cavity (12) which is fed from the outlet duct (11) via said grooves (200), and which opens directly to the outside via the spray orifice (220).
- A device according to claim 13, characterized in that said grooves (200) pass through said ring (20) in such a manner as to produce turbulence inside said central cavity (12).
- A device according to claim 13 or 14, characterized in that said axial ring (20) is made on the front face (211a) of said core of the inner element (21) and the end wall of the central cavity (12) is situated in the plane containing the front edge of said sleeve (212).
- A device according to claim 13 or 14, characterized in that said axial ring (20) is made on the back face of said outer element (22).
- A device according to any preceding claim, characterized in that the front face (211a) of said core (211) projects, at rest, from the plane containing the front edge of said sleeve (212), and is pushed in elastically when pressed against the outer element (22).
- A spray device according to any preceding claim, characterized in that the length of the core (211) is greater than the length of the sleeve (212) in such a manner that the back end (211b) of the core projects into the outlet duct (11) towards the expansion chamber (10).
- A spray device according to any preceding claim, characterized in that said inner element (21) includes three symmetrical fins (210) situated close to the front face of the core (211) of the inner element (21).
- A device according to any one of claims 1 to 18, characterized in that the fins (210) are provided at the back of the core (211) and are integral with the wall of the expansion chamber (10).
- A spray device according to any preceding claim, characterized in that the sleeve (212) of the inner element (21) is integrally formed with the head (1).
- A device according to any preceding claim, characterized in that said outer element (22) is provided with a front face that is concave or in the form of a deflector with the spray orifice (220) opening out into the center thereof.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9313055 | 1993-11-03 | ||
FR9313055A FR2711930B1 (en) | 1993-11-03 | 1993-11-03 | Spraying device. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0650764A1 EP0650764A1 (en) | 1995-05-03 |
EP0650764B1 true EP0650764B1 (en) | 1998-02-11 |
Family
ID=9452453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94402473A Expired - Lifetime EP0650764B1 (en) | 1993-11-03 | 1994-11-03 | Spray device |
Country Status (7)
Country | Link |
---|---|
US (1) | US5622318A (en) |
EP (1) | EP0650764B1 (en) |
AT (1) | ATE163141T1 (en) |
DE (1) | DE69408507T2 (en) |
DK (1) | DK0650764T3 (en) |
ES (1) | ES2113625T3 (en) |
FR (1) | FR2711930B1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2705589B1 (en) * | 1993-05-28 | 1995-07-28 | Valois | Spray nozzle and sprayer comprising such a nozzle. |
FR2737198B1 (en) * | 1995-07-24 | 1997-09-26 | Oreal | DISPENSING HEAD OF A LIQUID PRODUCT IN THE FORM OF AN AEROSOL AND DISPENSER PROVIDED WITH SUCH A HEAD |
US5992765A (en) * | 1998-04-24 | 1999-11-30 | Summit Packaging Systems, Inc. | Mechanical break-up for spray actuator |
FR2791956B1 (en) * | 1999-04-12 | 2001-06-01 | Oreal | DISTRIBUTION HEAD FOR A VALVE OR PUMP TYPE DEVICE |
FR2827528B1 (en) | 2001-07-20 | 2004-07-09 | Oreal | DISTRIBUTION HEAD COMPRISING TWO NOZZLES |
FR2838070B1 (en) * | 2002-04-04 | 2005-02-11 | Valois Sa | DISTRIBUTION HEAD TO BE MOUNTED ON A MOBILE HOLLOW ACTUATING ROD |
EP1916033A4 (en) * | 2005-07-06 | 2009-11-25 | Mitani Valve Co Ltd | Content discharge mechanism, and aerosol-type product and pump-type product with the same |
US7300001B2 (en) * | 2005-09-02 | 2007-11-27 | Roy Kuo | Pump-dispensing atomizer |
WO2009086653A1 (en) * | 2007-12-29 | 2009-07-16 | Huisan Hsu | A rotor structure of a micro-atomizing nozzle |
US20150343470A1 (en) * | 2010-01-28 | 2015-12-03 | Sun Solutions Ltd. | Spray mineral water bottle and cap of spray mineral water bottle |
FR2961189B1 (en) * | 2010-06-14 | 2013-02-22 | Valois Sas | HEAD OF DISTRIBUTION OF FLUID PRODUCT. |
FR3004128B1 (en) | 2013-04-08 | 2017-01-13 | Aptar France Sas | IMPROVED SPRAY HEAD. |
US10130960B2 (en) * | 2014-03-24 | 2018-11-20 | Dlhbowles, Inc. | Swirl nozzle assemblies with high efficiency mechanical break up for generating mist sprays of uniform small droplets |
US10370177B2 (en) * | 2016-11-22 | 2019-08-06 | Summit Packaging Systems, Inc. | Dual component insert with uniform discharge orifice for fine mist spray |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1461545A (en) * | 1921-06-04 | 1923-07-10 | William R Purnell | Mechanical pressure atomizing fuel burner |
CH166432A (en) * | 1932-06-24 | 1934-01-15 | Tobler Jacques | Atomizing nozzle. |
FR1226549A (en) * | 1959-02-18 | 1960-07-13 | Diffusion De Tech Nouvelles Et | Improvements to spray jets, particularly for agricultural uses |
US3112074A (en) * | 1961-11-29 | 1963-11-26 | Edward Howard Green | Spray head for an aerosol dispenser |
IT1071471B (en) * | 1976-10-18 | 1985-04-10 | Spray Plast S R L | MANUAL SPRAYER FOR LIQUIDS |
US4109869A (en) * | 1977-06-16 | 1978-08-29 | Dutton-Lainson Company | Oiler with adjustable spray nozzle |
US4227650A (en) * | 1978-11-17 | 1980-10-14 | Ethyl Products Company | Fluid dispenser and nozzle structure |
US4313569A (en) * | 1980-05-27 | 1982-02-02 | Ethyl Products Company | Fluid dispenser method and apparatus |
US4358057A (en) * | 1980-05-27 | 1982-11-09 | Ethyl Products Company | Fluid dispenser method and apparatus |
US4365751A (en) * | 1980-09-26 | 1982-12-28 | Yoshino Kogyosho Co., Ltd. | Trigger type liquid injector |
ES272902Y (en) * | 1983-06-14 | 1984-05-01 | Workum Donald | "SPRAYER FOR MANUALLY DEFORMABLE CONTAINERS" |
EP0254505B1 (en) * | 1986-07-21 | 1992-04-22 | Yoshino Kogyosho Co., Ltd. | Trigger type liquid dispenser |
DE3785454T2 (en) * | 1987-12-24 | 1993-07-29 | Yoshino Kogyosho Co Ltd | NOZZLE CAP. |
-
1993
- 1993-11-03 FR FR9313055A patent/FR2711930B1/en not_active Expired - Fee Related
-
1994
- 1994-11-01 US US08/332,948 patent/US5622318A/en not_active Expired - Fee Related
- 1994-11-03 DK DK94402473T patent/DK0650764T3/en active
- 1994-11-03 DE DE69408507T patent/DE69408507T2/en not_active Expired - Fee Related
- 1994-11-03 ES ES94402473T patent/ES2113625T3/en not_active Expired - Lifetime
- 1994-11-03 AT AT94402473T patent/ATE163141T1/en not_active IP Right Cessation
- 1994-11-03 EP EP94402473A patent/EP0650764B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69408507T2 (en) | 1998-09-17 |
ATE163141T1 (en) | 1998-02-15 |
DE69408507D1 (en) | 1998-03-19 |
US5622318A (en) | 1997-04-22 |
DK0650764T3 (en) | 1998-09-23 |
FR2711930B1 (en) | 1996-01-26 |
EP0650764A1 (en) | 1995-05-03 |
FR2711930A1 (en) | 1995-05-12 |
ES2113625T3 (en) | 1998-05-01 |
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