EP1221358B1 - Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces - Google Patents

Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces Download PDF

Info

Publication number
EP1221358B1
EP1221358B1 EP01403321A EP01403321A EP1221358B1 EP 1221358 B1 EP1221358 B1 EP 1221358B1 EP 01403321 A EP01403321 A EP 01403321A EP 01403321 A EP01403321 A EP 01403321A EP 1221358 B1 EP1221358 B1 EP 1221358B1
Authority
EP
European Patent Office
Prior art keywords
nozzle according
section
edges
oblong
neck
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
Application number
EP01403321A
Other languages
German (de)
French (fr)
Other versions
EP1221358A3 (en
EP1221358A2 (en
Inventor
Yvon George Jean-Pierre Jaubertie
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.)
Workinter Ltd
Original Assignee
Workinter Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Workinter Ltd filed Critical Workinter Ltd
Publication of EP1221358A2 publication Critical patent/EP1221358A2/en
Publication of EP1221358A3 publication Critical patent/EP1221358A3/en
Application granted granted Critical
Publication of EP1221358B1 publication Critical patent/EP1221358B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor

Definitions

  • printing cylinders which have a very engraved surface finely and which have very small cells or sluices that are loaded with ink and small impurities that require scrupulous cleansing that must be both complete and leave the print surface intact.
  • the nozzle described in document FR 2712826 comprises a channel which has two sections, the first, in the direction of flow, being convergent and receiving directly the flow of particles, and the second being divergent.
  • the present invention makes it possible to create a media flow without margins irregularities, which makes it possible to juxtapose successive stripped strips rigorous, without any risk of irregularities and accidental attack of a layer that one wishes to preserve in its complete integrity.
  • FIG. 1 to 8 there is shown a nozzle according to the invention shown in one piece, being specified that it could also be obtained by assembling several sections, in particular to facilitate the machining of an axial internal passage of which the section is variable, as will be described now.
  • the nozzle is formed of a body 1 crossed by a longitudinal tubular passage, one of which end is an inlet 2 to be connected to a pipe power supply (not shown) for driving media to the input 2 according to the F1 arrow, media composed of solid particles in a gaseous medium, in particular the air.
  • the section of the passage 1 between the inlet 2 and the outlet 3 is variable, and the body 1 is externally formed of two segments which are a cylindrical segment 4 from the inlet 2 and a flattened nose 5 connected to the cylindrical segment 4.
  • the passage 1 has three parts which are successively: entrance chamber 11 with a constant circular section along the entire length of said chamber 11, an intermediate duct 12 of variable section continuously, its walls being convergent from the chamber 11 to an oblong neck 13, having therefore a small axis and a major axis, but whose area is equal to that of the chamber 11, and finally an output tube 14 with an oblong section of continuously variable section, walls being divergent from the neck 13 to the outlet 3, constituted by the end 5, and forming an outlet 15 which has an oblong section of shape different from that of the neck 13, the shapes of the neck 13 and the outlet orifice 15 being both coordinates so that, while having equal areas, the media flow is projected in a homogeneous and precise way, without suffering parasitic wall effects which are the cause of irregular margins.
  • the oblong section of the neck 13 has a very simple shape, since it has two parallel rectilinear edges 21 and 22 connected by 23 and 24.
  • the spacing of the rectilinear edges 21 and 22 is constant and the flow of media is evenly flat.
  • the passage section of the outlet orifice 15 is coordinated to that of the neck 13 to rectify this defect.
  • the passage section of the orifice 15 has a portion central with two parallel straight edges 25 and 26 connected not by holidays but according to arcs of circle 27 and 28 of larger diameter, creating two side channels longitudinal 29.
  • the spacing of the rectilinear edges 25 and 26 is smaller than that of edges 21 and 22, the total area of the two channels 29 being correlatively larger so that the section overall passage of the outlet orifice has an area equal to that of the neck 13.
  • Equality of the passage sections of the chamber 11, the neck 13 and the outlet orifice 15 guarantees a constant flow between the inlet 2 and the outlet 3 but the different forms that presents the central passage from the outlet of the chamber 11 to the orifice 15, give the media flow a two-phase flow with a homogeneous energy on the entire passage section of the outlet through a rational distribution of forms that compensate for wall effects and homogenize the flow.
  • the outlet jet is formed according to a flattened brush in which the energy is also distributed, whether the nozzle is operated manually or mechanically by a slave device.
  • FIGS. 9 to 16 there is another embodiment of the nozzle according to the invention.
  • the same elements bear the same references as in Figures 1 to 8.
  • the solid particles of the flux are charged in static electricity by the fact of their friction against the walls of the feed pipe and against the the walls of the nozzle, which is very troublesome because the particles are attracted by the surface in stripping and some of them remain stuck, so perform a finish consisting of cleaning the etched surface, meticulous work, painful and long.
  • this disadvantage is remedied by arranging oblique passages 33 and 34 which pass through the wall of the spout 5 and to which ducts are connected (no represented) from an ionized air source.
  • This air is compressed and injected at a high speed, or even supersonic, according to the arrows F3, in the medium that flows in the beak 5.
  • a pipe feeds the air ducts and contains a crown of known type (not shown) producing in the air discharges electrical ones that cause it to ionize so that it contains as many ions negative than positive ions.
  • the air circulating in this pipe is advantageously conditioned to be slightly damp.
  • the nozzle according to the invention equipped with ionized air injectors provides great safety because the introduction of this air can not cause no electric shock and therefore does not create hazardous conditions of inflammation of the media because there is no creation of a potential difference, so no existence of an electric current and no rise in potential of the surfaces to stripped.
  • the nozzle is moved in translation in the direction of its longitudinal axis, at a distance and angle of attack that depend on the substrate to be removed and the desired result.
  • FIGS. 9 to 16 it has been chosen to unblock the intermediate duct 12 in a neck 40 whose oblong passage section is elliptical.
  • the section of the outlet must have dimensions and shape coordinated with those of the neck 40, and we see FIGS. 10 and 14 show that the outlet orifice 41 has a passage section whose shape could be defined as a "counter-ellipse", that is, the section of passage of the orifice 41 is formed by two curved longitudinal edges 42 and 43 opposed by their convexity and connected by enlarged curves 44 and 45 which create the longitudinal side channels 29, so that the central part of the orifice 41 is narrower than the lateral parts, being reminded that the total area of orifice 41 is equal to that of the collar 40.
  • a passage section whose shape could be defined as a "counter-ellipse"
  • the section of passage of the orifice 41 is formed by two curved longitudinal edges 42 and 43 opposed by their convexity and connected by enlarged curves 44 and 45 which create the longitudinal side channels 29, so that the central part of the orifice 41 is narrower than the lateral parts, being reminded that the total area of orifice 41 is equal to that of the
  • the curves 44 and 45 do not continuously connect the edges 42 and 43, in an arc of circle for example, but are in broken arc and create at their intersection a ridge respectively 46 and 47, which creates a precise limit to the edges of the media stream leaving through the orifice 3.
  • the conjugate shapes of the neck 40 and the outlet orifice 3 again make it possible to distribute the energy of the flux uniformly, with a focus on particle velocity in the central area of the beak 5 and the flow on its two short sides.
  • the neck 13 of FIG. 17 is that which has been described with the first embodiment FIGS. 1 to 8. With reference to FIG. 17, it can be seen that the outlet orifice 15 coordinated at neck 13 is that also described with the first embodiment Figures 1 to 8.
  • FIG. 19 shows an oblong neck 50 which also has rectilinear edges, as in Figure 17, but each of them is formed by two segments 51-52 and 53-54 angularly offset to have a variable spacing from a minimum on sides up to a maximum in the central area.
  • an exit orifice of opposite shape namely that it has two straight edges each formed by two segments 55-56 and 57-58 angularly offset to the inverse segments 51-52 and 53-54 whose spacing varies from a maximum on the sides to a minimum in the central area.
  • FIG. 21 shows the neck 40 of FIG. 15 and in FIG. output of Figure 14.
  • the neck can have different shapes, from that of Figure 17 to rectilinear and parallel edges, up to the perfectly geometric ellipse shape of Figure 21.
  • outlets having a shape coordinated with that of the corresponding neck may also be made according to different variants, being recalled that the area the passage section of the outlet must be equal to that of the neck.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Glanulating (AREA)
  • Medicinal Preparation (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

A tubular passage of a nozzle has an inlet chamber (11) with a constant circular cross-section, an intermediate conduit (12) of continuously varying cross section which converges to an oblong shaped neck, and an outlet tube (14) with varying cross-section which diverges towards outlet (3) from neck.

Description

Il existe une multitude de sortes de surfaces à décaper, dont certaines sont relativement grossières et des procédés rustiques bien connus depuis de nombreuses années sont alors suffisantes.There are a multitude of types of surfaces to be stripped, some of which are relatively coarse and well known rustic processes since many years are then sufficient.

D'autres surfaces, au contraire, nécessitent des soins particuliers et pour celles-là on ne peut plus se contenter de projeter des matériaux irréguliers, ou très durs, ou très agressifs, ou très salissants.Other surfaces, on the contrary, require special care and for those can no longer be content with projecting irregular, or very hard, or very aggressive, or very messy.

A titre d'exemple, on peut citer la peau du corps humain que l'on traite à des fins thérapeutiques ou esthétiques pour en retirer la fine partie extérieure. On peut également citer la surface d'oeuvres d'art : toiles peintes, plans et dessins, manuscrits et parchemins, fresques, sculptures en bois ou en minéraux, peintes ou dorées, vitraux, porcelaines, faïences, orfèvrerie, etc., ainsi que les façades de bâtiments, notamment pour en retirer des dépôts, patines et marques du temps, souillures ou graffitis.By way of example, mention may be made of the skin of the human body that is treated for therapeutic or aesthetic to remove the thin outer part. We can also mention the surface of works of art: painted canvases, plans and drawings, manuscripts and scrolls, frescoes, sculptures in wood or minerals, painted or gilded, stained glass, porcelain, earthenware, silverware, etc., as well as the facades of buildings, in particular to remove deposits, patinas and marks of time, stains or graffiti.

Un domaine très différent est celui de l'industrie où l'on trouve une multitude de cas qui nécessitent un décapage, notamment à des fins de remise en état et de nettoyage.A very different field is the industry where there are a multitude of cases which require stripping, especially for reclamation and cleaning purposes.

A titre d'exemple, les cylindres d'impression qui présentent une surface gravée très finement et qui comportent de très petits alvéoles ou pertuis qui se chargent d'encre et de petites impuretés qui nécessitent un nettoyage scrupuleux qui doit à la fois être complet et laisser intacte la surface d'impression.For example, printing cylinders which have a very engraved surface finely and which have very small cells or sluices that are loaded with ink and small impurities that require scrupulous cleansing that must be both complete and leave the print surface intact.

On peut également citer les structures d'avions, les carrosseries de voitures de compétition et plus généralement toute structure fragile ou délicate qui est revêtue d'une ou plusieurs couches de produits qu'il faut pouvoir retirer ultérieurement, en totalité ou couche par couche, cette dernière condition supposant que l'on puisse retirer une couche sans aucunement entamer celle qui se trouve immédiatement sous la précédente.There may also be mentioned aircraft structures, car bodies competition and more generally any fragile or delicate structure that is coated one or more layers of products that must be removed later, in whole or layer by layer, the latter condition assuming that we can remove a layer without any damage to the one immediately under the previous one.

On connaít un média projetable qui se prête particulièrement bien au décapage de surfaces délicates, à savoir un polymère amylacé issu du blé et qui fait l'objet du brevet des Etats Unis d'Amérique No 5 066 335. We know a projectable media that is particularly suitable for stripping delicate surfaces, namely a starchy polymer derived from wheat and which is the subject of the U.S. Patent No. 5,066,335.

Ce média est projeté avec des buses standard qui présentent l'inconvénient de créer un flux de sortie peu précis, de sorte qu'en procédant au décapage d'une grande surface par bandes parallèles successives et juxtaposées, chaque bande a une zone centrale entièrement décapée et des marges irrégulières qui obligent à créer la bande adjacente en recouvrement partiel de la marge voisine créée précédemment, ce qui empêche de garantir une réelle précision puisque la partie latérale du flux de média complémentaire peut provoquer certes le décapage des points manqués mais aussi un décapage supplémentaire en profondeur des points déjà décapés, d'où peut résulter une attaque de la couche inférieure.This media is projected with standard nozzles that present disadvantage of creating an imprecise output stream, so that by proceeding with the stripping of a large surface by successive parallel strips and juxtaposed, each band has a fully stripped center area and irregular margins that force to create the adjacent band in partial recovery of the neighboring margin created previously, which prevents to guarantee a real precision since the part side of the complementary media stream can cause stripping missed points but also an additional deep stripping of the points already stripped, from which may result an attack of the lower layer.

La buse décrite dans le document FR 2712826 comprend un canal qui présente deux tronçons, le premier, dans le sens d'écoulement, étant convergent et recevant directement le flux de particules, et le second étant divergent.The nozzle described in document FR 2712826 comprises a channel which has two sections, the first, in the direction of flow, being convergent and receiving directly the flow of particles, and the second being divergent.

La présente invention permet de créer un flux de média sans marges irrégulières, ce qui permet de juxtaposer les bandes décapées successives de manière rigoureuse, sans aucun risque d'irrégularités et d'attaque accidentelle d'une couche que l'on souhaite préserver dans son intégrité complète.The present invention makes it possible to create a media flow without margins irregularities, which makes it possible to juxtapose successive stripped strips rigorous, without any risk of irregularities and accidental attack of a layer that one wishes to preserve in its complete integrity.

A cette fin, l'invention a pour objet une buse pour la projection sur un objet d'un média formé par fluide tel qu'un flux gazeux contenant des particules solides, comprenant un corps traversé d'un passage tubulaire longitudinal dont une extrémité constitue une entrée devant être raccordée à l'arrivée d'une conduite d'alimentation en fluide et dont l'autre extrémité constitue une sortie du fluide ayant traversé la buse, la section du passage tubulaire étant variable entre l'entrée et la sortie caractérisée en ce que ledit passage présente trois parties successives qui sont :

  • une chambre d'entrée à section circulaire constante,
  • un conduit intermédiaire à section variable dont les parois sont convergentes depuis la chambre jusqu'à un col oblong qui a un grand axe et un petit axe et dont l'aire est égale à celle de la section circulaire de la chambre,
  • un tube de sortie à section oblongue et variable dont les parois sont divergentes depuis le col jusqu'à un orifice de sortie de section oblongue ayant un grand axe et un petit axe.
To this end, the subject of the invention is a nozzle for the projection onto an object of a media formed by a fluid such as a gaseous flow containing solid particles, comprising a body through which a longitudinal tubular passage is formed, one end of which constitutes an inlet to be connected to the inlet of a fluid supply pipe and whose other end is an outlet of the fluid having passed through the nozzle, the section of the tubular passage being variable between the inlet and the outlet characterized by what said passage has three successive parts which are:
  • an entrance chamber with a constant circular section,
  • an intermediate duct of variable section whose walls are converging from the chamber to an elongated neck which has a major axis and a minor axis and whose area is equal to that of the circular section of the chamber,
  • an oblong and variable section outlet tube whose walls are diverging from the neck to an oblong section outlet having a major axis and a minor axis.

Selon d'autres caractéristiques de l'invention :

  • Figure 00030001
    le col oblong présente deux bords rectilignes et parallèles à son grand axe ;
  • Figure 00040001
    le col oblong présente deux bords dont l'écartement est plus grand dans la zone centrale que sur les côtés du col ;
  • chacun des deux bords est formé d'au moins deux segments rectilignes ;
  • les deux bords sont courbes et réunis l'un à l'autre par des congés de raccordement latéraux ;
  • le col oblong a une section elliptique ;
  • la section oblongue du tube de sortie présente deux bords rectilignes et parallèles à son grand axe ;
  • la section oblongue du tube de sortie présente deux bords dont l'écartement est plus grand dans la zone centrale que sur les côtés du tube ;
  • chacun des deux bords est formé d'au moins deux segments rectilignes ;
  • les deux bords sont courbés et réunis l'un à l'autre par des congés de raccordement latéraux ;
  • la section oblongue du tube de sortie présente deux bords dont l'écartement est plus grand sur ses côtés que dans sa zone centrale ;
  • le col ayant une section elliptique, la section oblongue du tube de sortie présente deux bords de même courbure que ceux de l'ellipse mais opposés par leur convexité et réunis l'un à l'autre par des congés de raccordement latéraux ;
  • la section oblongue du tube est agrandie latéralement par deux canaux longitudinaux ;
  • la chambre d'entrée contient des éléments en relief constituant des concentrateurs de flux ;
  • le tube de sortie est déterminé par une paroi étanche qui est traversée par au moins un passage destiné à être relié à une source de gaz contenant des particules ionisées et débouchant obliquement dans ledit tube, d'amont en aval en considérant le sens de déplacement du fluide ;
  • la source de gaz est associée à un dispositif de mise en mouvement à grande vitesse ;
  • le dispositif de mise en mouvement du gaz est conçu pour imprimer à ce dernier une vitesse supérieure à celle du son ;
  • le gaz contient deux fractions sensiblement égales de particules ionisées de polarités inverses ;
  • le gaz est de l'air légèrement humide.
    • According to other features of the invention:
  • Figure 00030001
    the oblong neck has two straight edges parallel to its long axis;
  • Figure 00040001
    the elongated neck has two edges whose spacing is greater in the central area than on the sides of the neck;
  • each of the two edges is formed of at least two rectilinear segments;
  • the two edges are curved and joined to each other by lateral connecting fillet;
  • the elongated neck has an elliptical section;
  • the oblong section of the outlet tube has two straight edges parallel to its major axis;
  • the oblong section of the outlet tube has two edges whose spacing is greater in the central zone than on the sides of the tube;
  • each of the two edges is formed of at least two rectilinear segments;
  • the two edges are curved and joined to each other by lateral connecting fillet;
  • the oblong section of the outlet tube has two edges whose spacing is greater on its sides than in its central zone;
  • the neck having an elliptical section, the oblong section of the outlet tube has two edges of the same curvature as those of the ellipse but opposed by their convexity and joined to each other by lateral connecting fillet;
  • the oblong section of the tube is enlarged laterally by two longitudinal channels;
  • the inlet chamber contains relief elements constituting flow concentrators;
  • the outlet tube is determined by a sealed wall which is traversed by at least one passage intended to be connected to a source of gas containing ionized particles and opening obliquely into said tube, from upstream to downstream, considering the direction of movement of the fluid;
  • the gas source is associated with a high speed setting device;
  • the device for moving the gas is designed to print at the latter a speed higher than that of the sound;
  • the gas contains two substantially equal fractions of ionized particles of opposite polarities;
  • the gas is slightly humid air.

    • D'autres caractéristiques de l'invention ressortiront de la description détaillée ci-après faite en référence au dessin annexé. Bien entendu, la description et le dessin ne sont donnés qu'à titre d'exemple indicatif et non limitatif.

  • La figure 1 est une vue schématique en coupe longitudinale d'une buse conforme à l'invention.
  • Les figures 2, 3 et 4 sont des vues schématiques en coupe transversale de la buse de la figure 1, disposées chacune à l'aplomb de l'endroit où elle se situe.
  • La figure 5 est une vue schématique en coupe longitudinale de la même buse, pratiquée à 90° de la coupe de la figure 1.
  • Les figures 6, 7 et 8 sont des vues schématiques en coupe transversale de la buse de la figure 5, disposées chacune à l'aplomb de l'endroit où elle se situe.
  • La figure 9 est une vue schématique en coupe longitudinale d'une buse conforme à l'invention, selon un mode de réalisation particulier.
  • Les figures 10, 11 et 12 sont des vues schématiques en coupe transversale de la buse de la figure 9, disposées chacune à l'aplomb de l'endroit où elle se situe.
  • La figure 13 est une vue schématique en coupe longitudinale de la même buse, pratiquée à 90° de la coupe de la figure 9.
  • Les figures 14, 15 et 16 sont des vues schématiques en coupe transversale de la buse de la figure 13, disposées chacune à l'aplomb de l'endroit où elle se situe.
  • Les figures 17, 19 et 21 montrent, en coupe transversale de la buse, trois variantes de forme du col oblong.
  • Les figures 18, 20 et 22 montrent trois variantes de forme de l'orifice de sortie correspondant chacune à la forme du col oblong représentée en regard, c'est-à-dire col de la figure 17 et orifice de sortie de la figure 18, col de la figure 19 et orifice de sortie de la figure 20, col de la figure 21 et orifice de sortie de la figure 22.
    • Other features of the invention will become apparent from the detailed description hereinafter made with reference to the accompanying drawing. Of course, the description and the drawing are given only by way of indicative and nonlimiting example.
  • Figure 1 is a schematic longitudinal sectional view of a nozzle according to the invention.
  • Figures 2, 3 and 4 are schematic cross-sectional views of the nozzle of Figure 1, each disposed vertically above the location where it is located.
  • FIG. 5 is a diagrammatic view in longitudinal section of the same nozzle, made at 90 ° to the section of FIG.
  • Figures 6, 7 and 8 are schematic cross-sectional views of the nozzle of Figure 5, each disposed vertically above the location where it is located.
  • Figure 9 is a schematic longitudinal sectional view of a nozzle according to the invention, according to a particular embodiment.
  • Figures 10, 11 and 12 are schematic cross-sectional views of the nozzle of Figure 9, each disposed vertically above the location where it is located.
  • FIG. 13 is a schematic view in longitudinal section of the same nozzle, made at 90 ° to the section of FIG. 9.
  • Figures 14, 15 and 16 are schematic cross-sectional views of the nozzle of Figure 13, each disposed vertically above where it is located.
  • Figures 17, 19 and 21 show, in cross section of the nozzle, three shape variants of the oblong neck.
  • FIGS. 18, 20 and 22 show three variant shapes of the outlet orifice each corresponding to the shape of the oblong neck shown opposite, that is to say the neck of FIG. 17 and the outlet orifice of FIG. 18 19, and the outlet of FIG. 20, the neck of FIG. 21 and the outlet orifice of FIG. 22.

    • En se reportant aux figures 1 à 8, on voit une buse conforme à l'invention représentée en une seule pièce, étant précisé qu'elle pourrait aussi être obtenue par assemblage de plusieurs tronçons, notamment pour faciliter l'usinage d'un passage interne axial dont la section est variable, comme on va le décrire maintenant. Referring to Figures 1 to 8, there is shown a nozzle according to the invention shown in one piece, being specified that it could also be obtained by assembling several sections, in particular to facilitate the machining of an axial internal passage of which the section is variable, as will be described now.

    La buse est formée d'un corps 1 traversé d'un passage tubulaire longitudinal dont une extrémité est constitue une entrée 2 devant être raccordée à une conduite d'alimentation (non représentée) pour conduire un média jusqu'à l'entrée 2 selon la flèche F1, média composé de particules solides en milieu gazeux, en particulier de l'air.The nozzle is formed of a body 1 crossed by a longitudinal tubular passage, one of which end is an inlet 2 to be connected to a pipe power supply (not shown) for driving media to the input 2 according to the F1 arrow, media composed of solid particles in a gaseous medium, in particular the air.

    A l'autre extrémité du corps 1, se trouve une sortie 3 par laquelle le média est projeté selon les flèches F2 sur une surface afin de la décaper d'une ou plusieurs couches qu'elle porte.At the other end of the body 1, there is an output 3 through which the media is projected according to the arrows F2 on a surface to strip it of one or more layers that she wears.

    La section du passage 1 entre l'entrée 2 et la sortie 3 est variable, et le corps 1 est extérieurement formé de deux segments qui sont un segment cylindrique 4 à partir de l'entrée 2 et un bec aplati 5 raccordé au segment cylindrique 4.The section of the passage 1 between the inlet 2 and the outlet 3 is variable, and the body 1 is externally formed of two segments which are a cylindrical segment 4 from the inlet 2 and a flattened nose 5 connected to the cylindrical segment 4.

    Intérieurement, le passage 1 présente trois parties qui sont successivement : une chambre d'entrée 11 à section circulaire constant sur toute la longueur de ladite chambre 11, un conduit intermédiaire 12 à section variable continûment, ses parois étant convergentes depuis la chambre 11 jusqu'à un col de forme oblongue 13, ayant donc un petit axe et un grand axe, mais dont l'aire est égale à celle de la chambre 11, et enfin un tube de sortie 14 à section oblongue à section variable continûment, se parois étant divergentes depuis le col 13 jusqu'à la sortie 3, constituée par l'extrémité du bec 5, et formant un orifice de sortie 15 qui a une section oblongue de forme différente de celle du col 13, les formes du col 13 et de l'orifice de sortie 15 étant toutes deux coordonnées pour que, tout en ayant des aires égales, le flux de média soit projeté de manière homogène et précise, sans subir des effets de paroi parasites qui sont la cause de marges irrégulières.Internally, the passage 1 has three parts which are successively: entrance chamber 11 with a constant circular section along the entire length of said chamber 11, an intermediate duct 12 of variable section continuously, its walls being convergent from the chamber 11 to an oblong neck 13, having therefore a small axis and a major axis, but whose area is equal to that of the chamber 11, and finally an output tube 14 with an oblong section of continuously variable section, walls being divergent from the neck 13 to the outlet 3, constituted by the end 5, and forming an outlet 15 which has an oblong section of shape different from that of the neck 13, the shapes of the neck 13 and the outlet orifice 15 being both coordinates so that, while having equal areas, the media flow is projected in a homogeneous and precise way, without suffering parasitic wall effects which are the cause of irregular margins.

    Sur la figure 3, on voit que la section oblongue du col 13 a une forme très simple, puisqu'elle présente deux bords rectilignes parallèles 21 et 22 raccordés par des congés 23 et 24. L'écartement des bords rectilignes 21 et 22 est constant et le flux de média est uniformément plat.In FIG. 3, it can be seen that the oblong section of the neck 13 has a very simple shape, since it has two parallel rectilinear edges 21 and 22 connected by 23 and 24. The spacing of the rectilinear edges 21 and 22 is constant and the flow of media is evenly flat.

    Il en résulte que le débit et la vitesse du flux doivent théoriquement être constants selon toute la section de passage, alors que dans la réalité il n'en est rien à cause des effets de paroi qui ralentissent les particules périphériques par rapport à la vitesse des particules situées dans la zone centrale, ce qui s'avère être très défavorable à l'obtention de bandes décapées à bords francs. As a result, flow and flow velocity must theoretically be constant according to the whole section of passage, whereas in reality it is not because of the wall effects that slow down peripheral particles compared to the speed of particles located in the central zone, which proves to be very unfavorable to obtaining stripped strips with straight edges.

    Conformément à l'invention, la section de passage de l'orifice de sortie 15 est coordonnée à celle du col 13 pour rectifier ce défaut.According to the invention, the passage section of the outlet orifice 15 is coordinated to that of the neck 13 to rectify this defect.

    Sur la figure 2, on voit que la section de passage de l'orifice 15 présente une partie centrale à deux bords rectilignes parallèles 25 et 26 raccordés non par des congés mais selon des arcs de cercle 27 et 28 de plus grand diamètre, créant deux canaux latéraux longitudinaux 29.In FIG. 2, it can be seen that the passage section of the orifice 15 has a portion central with two parallel straight edges 25 and 26 connected not by holidays but according to arcs of circle 27 and 28 of larger diameter, creating two side channels longitudinal 29.

    L'écartement des bords rectilignes 25 et 26 est plus petit que celui de bords 21 et 22, l'aire totale des deux canaux 29 étant corrélativement plus grande afin que la section de passage d'ensemble de l'orifice de sortie ait une aire égale à celle du col 13.The spacing of the rectilinear edges 25 and 26 is smaller than that of edges 21 and 22, the total area of the two channels 29 being correlatively larger so that the section overall passage of the outlet orifice has an area equal to that of the neck 13.

    L'égalité des sections de passage de la chambre 11, du col 13 et de l'orifice de sortie 15 garantit un débit constant entre l'entrée 2 et la sortie 3 mais les différentes formes que présente le passage central depuis la sortie de la chambre 11 jusqu'à l'orifice 15, donnent au flux de média un écoulement diphasique selon une énergie homogène sur toute la section de passage de l'orifice de sortie grâce à une répartition rationnelle des formes compensant les effets de paroi et homogénéisant le flux.Equality of the passage sections of the chamber 11, the neck 13 and the outlet orifice 15 guarantees a constant flow between the inlet 2 and the outlet 3 but the different forms that presents the central passage from the outlet of the chamber 11 to the orifice 15, give the media flow a two-phase flow with a homogeneous energy on the entire passage section of the outlet through a rational distribution of forms that compensate for wall effects and homogenize the flow.

    Il en résulte un décapage uniforme sur toute la largeur du flux expulsé, sans création de marges irrégulières, en formant des bandes à bords francs pouvant être très exactement juxtaposées lors des passes successives, de sorte que le décapage est rigoureusement constant sur des surfaces aussi grandes qu'elles puissent être, bien qu'il soit obtenu par une succession de bandes étroites.This results in uniform stripping across the entire width of the expelled flow, without creating irregular margins, forming bands with straight edges that can be very exactly juxtaposed in successive passes, so that stripping is rigorously constant on surfaces as large as they can be, well that it be obtained by a succession of narrow bands.

    Le jet de sortie se forme selon un pinceau aplati dans lequel l'énergie est également distribuée, que la buse soit actionnée manuellement ou mécaniquement par un dispositif asservi.The outlet jet is formed according to a flattened brush in which the energy is also distributed, whether the nozzle is operated manually or mechanically by a slave device.

    En se reportant maintenant aux figures 9 à 16, on voit un autre mode de réalisation de la buse conforme à l'invention. Sur ces figures, les mêmes éléments portent les mêmes références que sur les figures 1 à 8.Referring now to FIGS. 9 to 16, there is another embodiment of the nozzle according to the invention. In these figures, the same elements bear the same references as in Figures 1 to 8.

    Dans la chambre 11, se trouvent deux plongeurs obliques 31 et 32 qui « perturbent » le flux aléatoire d'entrée afin de l'homogénéiser et de le concentrer pour le préparer à aborder le col à section oblongue. In the chamber 11, there are two oblique divers 31 and 32 that "disturb" the random input stream in order to homogenize it and concentrate it to prepare it for approach the neck with oblong section.

    Par ailleurs, les particules solides du flux se chargent en électricité statique par le fait de leurs frottements contre les parois de la conduite d'alimentation et contre les parois de la buse, ce qui est très gênant car les particules sont attirées par la surface en cours de décapage et une partie d'entre elles y restent collées, de sorte qu'il faut procéder à une finition consistant à nettoyer la surface décapée, travail méticuleux, pénible et long.Moreover, the solid particles of the flux are charged in static electricity by the fact of their friction against the walls of the feed pipe and against the the walls of the nozzle, which is very troublesome because the particles are attracted by the surface in stripping and some of them remain stuck, so perform a finish consisting of cleaning the etched surface, meticulous work, painful and long.

    Selon l'invention, on remédie à cet inconvénient en ménageant des passages obliques 33 et 34 qui traversent la paroi du bec 5 et auxquels on raccorde des conduits (non représentés) provenant d'une source d'air ionisé.According to the invention, this disadvantage is remedied by arranging oblique passages 33 and 34 which pass through the wall of the spout 5 and to which ducts are connected (no represented) from an ionized air source.

    Cet air est comprimé et injecté à une vitesse élevée, voire même supersonique, selon les flèches F3, dans le média qui circule dans le bec 5.This air is compressed and injected at a high speed, or even supersonic, according to the arrows F3, in the medium that flows in the beak 5.

    Une canalisation (non représentée) alimente les conduits d'air et contient une couronne de type connu (non représentée) produisant dans l'air des décharges électriques qui provoquent son ionisation de telle sorte qu'il contienne autant d'ions négatifs que d'ions positifs.A pipe (not shown) feeds the air ducts and contains a crown of known type (not shown) producing in the air discharges electrical ones that cause it to ionize so that it contains as many ions negative than positive ions.

    L'air circulant dans cette canalisation est avantageusement conditionné pour être légèrement humide.The air circulating in this pipe is advantageously conditioned to be slightly damp.

    Ceux des ions qui ont la même polarité que la surface à décaper rendent neutres les particules de média de polarité inverse qui les ont attirés, de sorte que ces particules ne restent plus collées à la surface à décaper. Les particules de média dont la polarité est la même que celle de la surface à décaper ne peuvent évidemment pas y adhérer puisque les polarités identiques se repoussent.Those ions that have the same polarity as the surface to be stripped, neutralize reverse polarity media particles that attracted them, so that these particles do not remain stuck to the surface to be stripped. Media particles whose polarity is the same as that of the surface to be stripped can obviously not adhere to it since identical polarities repel each other.

    Les ions de polarité inverse de celle de la surface à décaper s'éliminent par la terre.The ions of opposite polarity to that of the surface to be stripped are eliminated by the earth.

    Il faut remarquer que la buse conforme à l'invention équipée d'injecteurs d'air ionisé procure une grande sécurité d'emploi car l'introduction de cet air ne peut provoquer aucune décharge électrique et ne crée donc pas de conditions comportant un risque d'inflammation du média car il n'y a pas création d'une différence de potentiel, donc pas d'existence d'un courant électrique et pas de montée en potentiel des surfaces à décaper.It should be noted that the nozzle according to the invention equipped with ionized air injectors provides great safety because the introduction of this air can not cause no electric shock and therefore does not create hazardous conditions of inflammation of the media because there is no creation of a potential difference, so no existence of an electric current and no rise in potential of the surfaces to stripped.

    Pour réaliser le décapage d'une surface, la buse est déplacée en translation dans le sens de son axe longitudinal, à une distance et selon un angle d'attaque qui dépendent du substrat à retirer et du résultat recherché. To carry out the stripping of a surface, the nozzle is moved in translation in the direction of its longitudinal axis, at a distance and angle of attack that depend on the substrate to be removed and the desired result.

    Sur les figures 9 à 16, on a choisi de faire déboucher le conduit intermédiaire 12 dans un col 40 dont la section de passage oblongue est elliptique.In FIGS. 9 to 16, it has been chosen to unblock the intermediate duct 12 in a neck 40 whose oblong passage section is elliptical.

    Conformément aux explications données plus haut, la section de l'orifice de sortie doit avoir des dimensions et une forme coordonnées à celles du col 40, et on voit sur les figures 10 et 14 que l'orifice de sortie 41 a une section de passage dont la forme pourrait être définie comme une « contre-ellipse », c'est-à-dire que la section de passage de l'orifice 41 est constituée par deux bords longitudinaux courbes 42 et 43 opposés par leur convexité et raccordés par des courbes élargies 44 et 45 qui créent les canaux latéraux longitudinaux 29, de sorte que la partie centrale de l'orifice 41 est plus étroite que les parties latérales, étant rappelé que l'aire totale de l'orifice 41 est égale à celle du col 40.In accordance with the explanations given above, the section of the outlet must have dimensions and shape coordinated with those of the neck 40, and we see FIGS. 10 and 14 show that the outlet orifice 41 has a passage section whose shape could be defined as a "counter-ellipse", that is, the section of passage of the orifice 41 is formed by two curved longitudinal edges 42 and 43 opposed by their convexity and connected by enlarged curves 44 and 45 which create the longitudinal side channels 29, so that the central part of the orifice 41 is narrower than the lateral parts, being reminded that the total area of orifice 41 is equal to that of the collar 40.

    Ici, les courbes 44 et 45 ne raccordent pas en continu les bords 42 et 43, en arc de cercle par exemple, mais sont en arc brisé et créent à leur intersection une arête respectivement 46 et 47, ce qui crée une limite précise aux bords du flux de média sortant par l'orifice 3.Here, the curves 44 and 45 do not continuously connect the edges 42 and 43, in an arc of circle for example, but are in broken arc and create at their intersection a ridge respectively 46 and 47, which creates a precise limit to the edges of the media stream leaving through the orifice 3.

    Les formes conjuguées du col 40 et de l'orifice de sortie 3 permettent ici encore de répartir uniformément l'énergie du flux, en privilégiant la vitesse des particules dans la zone centrale du bec 5 et le débit sur ses deux petits côtés.The conjugate shapes of the neck 40 and the outlet orifice 3 again make it possible to distribute the energy of the flux uniformly, with a focus on particle velocity in the central area of the beak 5 and the flow on its two short sides.

    Ce principe peut être respecté tout en modifiant les formes des figures 6 et 7 d'une part et 14 et 15 d'autre part.This principle can be respected while modifying the shapes of figures 6 and 7 of a part and 14 and 15 on the other hand.

    C'est ce que l'on a schématisé sur les figures 17 à 22.This is shown schematically in Figures 17 to 22.

    Le col 13 de la figure 17 est celui qui a été décrit avec le premier mode de réalisation des figures 1 à 8. En regard de la figure 17, on voit que l'orifice de sortie 15 coordonné au col 13 est celui également décrit avec le premier mode de réalisation des figures 1 à 8. The neck 13 of FIG. 17 is that which has been described with the first embodiment FIGS. 1 to 8. With reference to FIG. 17, it can be seen that the outlet orifice 15 coordinated at neck 13 is that also described with the first embodiment Figures 1 to 8.

    Sur la figure 19, on montre un col oblong 50 qui présente aussi des bords rectilignes, comme sur la figure 17, mais chacun d'eux est formé par deux segments 51-52 et 53-54 décalés angulairement pour avoir un écartement variable depuis un minimum sur les côtés jusqu'à un maximum dans la zone centrale. En regard de la figure 19, on voit un orifice de sortie de forme inverse, à savoir qu'il présente deux bords rectilignes formés chacun par deux segments 55-56 et 57-58 décalés angulairement à l'inverses des segments 51-52 et 53-54 dont l'écartement varie depuis un maximum sur les côtés jusqu'à un minimum dans la zone centrale.FIG. 19 shows an oblong neck 50 which also has rectilinear edges, as in Figure 17, but each of them is formed by two segments 51-52 and 53-54 angularly offset to have a variable spacing from a minimum on sides up to a maximum in the central area. Next to Figure 19, we see an exit orifice of opposite shape, namely that it has two straight edges each formed by two segments 55-56 and 57-58 angularly offset to the inverse segments 51-52 and 53-54 whose spacing varies from a maximum on the sides to a minimum in the central area.

    Enfin, pour permettre une meilleure comparaison grâce au rapprochement des vues, on a représenté sur la figure 21 le col 40 de la figure 15 et sur la figure 22 l'orifice de sortie de la figure 14.Finally, to allow a better comparison thanks to the convergence of views, FIG. 21 shows the neck 40 of FIG. 15 and in FIG. output of Figure 14.

    On voit ainsi que le col peut avoir différentes formes, depuis celle de la figure 17 à bords rectilignes et parallèles, jusqu'à la forme en ellipse parfaitement géométrique de la figure 21.We see that the neck can have different shapes, from that of Figure 17 to rectilinear and parallel edges, up to the perfectly geometric ellipse shape of Figure 21.

    Les orifices de sortie ayant une forme coordonnée à celle du col correspondant, cette forme peut également être réalisées selon différentes variantes, étant rappelé que l'aire de la section de passage de l'orifice de sortie doit être égale à celle du col.The outlets having a shape coordinated with that of the corresponding neck, this form may also be made according to different variants, being recalled that the area the passage section of the outlet must be equal to that of the neck.

    Claims (19)

    1. Nozzle for the projection onto an object of a fluid such as a gaseous flow containing solid particles, comprising a body through which there passes a longitudinal tubular passage, one end of which constitutes an inlet that has to be connected to the intake of a fluid supply conduit and the other end of which constitutes an outlet for the fluid that has passed through the nozzle, the section of the tubular passage being variable between the inlet (2) and the outlet (3), characterised in that said passage has three successive portions, which are:
      an inlet chamber (11) with a constant circular section,
      an intermediate conduit (12) with a variable section, the walls of which are convergent from the chamber (11) to an oblong neck (13-40-50), which has a major axis and a minor axis and the area of which is equal to that of the circular section of the chamber (11), and
      an outlet tube (14) with a variable oblong section, the walls of which are divergent from the neck (13-40) to an outlet orifice (15) of oblong section having a major axis and a minor axis.
    2. Nozzle according to Claim 1, characterised in that the oblong neck (13) has two rectilinear edges (21 and 22) parallel to its major axis.
    3. Nozzle according to Claim 1, characterised in that the oblong neck (40-50) has two edges (51-52 and 53-54), the spacing of which is greater in the central zone than at the sides of the neck (40-50).
    4. Nozzle according to Claim 3, characterised in that each of the two edges is formed of at least two rectilinear segments (51 and 52, 53 and 54).
    5. Nozzle according to Claim 3, characterised in that the two edges are curved and joined to one another by lateral connecting fillets.
    6. Nozzle according to Claim 5, characterised in that the oblong neck (40) has an elliptical section.
    7. Nozzle according to Claim 1, characterised in that the oblong section of the outlet tube (14) has two rectilinear edges (25 and 26) parallel to its major axis.
    8. Nozzle according to Claim 1, characterised in that the oblong section of the outlet tube (14) has two edges, the spacing of which is greater in the central area than at the sides of the tube (14).
    9. Nozzle according to Claim 8, characterised in that each of the two edges is formed of at least two rectilinear segments (55 and 56, 57 and 58).
    10. Nozzle according to Claim 8, characterised in that the two edges are curved and joined to one another by lateral connecting fillets.
    11. Nozzle according to Claim 1, characterised in that the oblong section of the outlet tube (14) has two edges (55-56, 57-58), the spacing of which is greater at its sides than in its central area.
    12. Nozzle according to Claim 6, characterised in that , the neck (40) having an elliptical section, the oblong section of the outlet tube has two edges (42 and 43) with the same curvature as those of the ellipse but opposite as regards their convexity and joined to one another by lateral connecting fillets (44 and 45).
    13. Nozzle according to any one of Claims 7, 8 and 12, characterised in that the oblong section of the tube (14) is enlarged laterally by two longitudinal channels (29).
    14. Nozzle according to Claim 1, characterised in that the inlet chamber (11) contains elements in relief (31 and 32) constituting flow concentrators.
    15. Nozzle according to Claim 1, characterised in that the outlet tube (14) is determined by an impermeable wall (5), through which there passes at least one passage (33-34) intended to be connected to a source of gas containing ionised particles and opening out obliquely into said tube (14), downstream in relation to the direction of displacement of the fluid.
    16. Nozzle according to Claim 15, characterised in that the source of gas is associated with a device for setting in motion at high speed.
    17. Nozzle according to Claim 16, characterised in that the device for setting the gas in motion is designed so as to transmit to the latter a speed higher than the speed of sound.
    18. Nozzle according to Claim 15, characterised in that the gas contains two substantially equal fractions of ionised particles of inverse polarity.
    19. Nozzle according to Claim 15, characterised in that the gas is slightly humid air.
    EP01403321A 2001-01-04 2001-12-20 Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces Expired - Lifetime EP1221358B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    GB0100198A GB2372718B (en) 2001-01-04 2001-01-04 Nozzle intended for the concentrated distribution of a fluid for scouring of surfaces
    GB0100198 2001-01-04

    Publications (3)

    Publication Number Publication Date
    EP1221358A2 EP1221358A2 (en) 2002-07-10
    EP1221358A3 EP1221358A3 (en) 2002-09-18
    EP1221358B1 true EP1221358B1 (en) 2005-07-20

    Family

    ID=9906256

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01403321A Expired - Lifetime EP1221358B1 (en) 2001-01-04 2001-12-20 Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces

    Country Status (7)

    Country Link
    US (1) US6726130B2 (en)
    EP (1) EP1221358B1 (en)
    AT (1) ATE299780T1 (en)
    CA (1) CA2365343A1 (en)
    DE (1) DE60112029T2 (en)
    ES (1) ES2246302T3 (en)
    GB (1) GB2372718B (en)

    Families Citing this family (21)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DK1357057T3 (en) * 2002-04-22 2006-11-13 Sara Lee De Nv Container for a substance to be sprayed
    JP2004009257A (en) * 2002-06-10 2004-01-15 Macoho Co Ltd Peening processing method
    US6851632B2 (en) * 2003-01-24 2005-02-08 Spraying Systems Co. High-pressure cleaning spray nozzle
    US20050023385A1 (en) * 2003-07-29 2005-02-03 Kui-Chiu Kwok Powder robot gun
    CA2529782C (en) 2003-08-22 2010-12-07 Kastalon, Inc. Nozzle for use in rotational casting apparatus
    US6989061B2 (en) * 2003-08-22 2006-01-24 Kastalon, Inc. Nozzle for use in rotational casting apparatus
    US20050173556A1 (en) * 2004-02-09 2005-08-11 Kui-Chiu Kwok Coating dispensing nozzle
    FR2866586B1 (en) * 2004-02-25 2007-05-11 Francois Archer METHOD OF PRE-STRESSING OF INTERIOR WALLS OF HOLLOW BODIES AND DEVICE FOR IMPLEMENTING THE SAME
    FR2866587B1 (en) * 2004-02-25 2007-03-16 Francois Archer GRILLEAGE NOZZLE DEVICE
    GB2418159B (en) * 2004-09-17 2008-02-13 Quill Internat Ind Plc A blasting nozzle
    WO2006097133A1 (en) * 2005-03-14 2006-09-21 Workinter Limited Device and method for nozzle stripping by spraying a fluid loaded with solid particles forming an optimized stripping front
    WO2006097134A1 (en) * 2005-03-14 2006-09-21 Workinter Limited Shoe and device for stripping surfaces having a curvature by directed spraying a discharge of a flow of particles
    US9168546B2 (en) * 2008-12-12 2015-10-27 National Research Council Of Canada Cold gas dynamic spray apparatus, system and method
    US8187057B2 (en) * 2009-01-05 2012-05-29 Cold Jet Llc Blast nozzle with blast media fragmenter
    DE102009034417A1 (en) * 2009-07-23 2011-01-27 Airbus Operations Gmbh Fluid actuator for generating a pulsed outlet flow in the flow around an aerodynamic body, a blowout device with such a fluid actuator and such an aerodynamic body
    JP5308275B2 (en) * 2009-08-24 2013-10-09 国立大学法人東京工業大学 Sunlight collection system
    US8459572B2 (en) * 2009-10-24 2013-06-11 Aerosol Dynamics Inc. Focusing particle concentrator with application to ultrafine particles
    US8607827B2 (en) 2010-11-22 2013-12-17 Euramax International, Inc. Low profile downspout extension with non-rectangular outlet
    US10012425B2 (en) * 2012-08-29 2018-07-03 Snow Logic, Inc. Modular dual vector fluid spray nozzles
    RU2612712C1 (en) * 2013-04-26 2017-03-13 Фискарс Ойй Абп Spray nozzle for fluid medium
    US9931639B2 (en) 2014-01-16 2018-04-03 Cold Jet, Llc Blast media fragmenter

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2296715A (en) * 1939-06-15 1942-09-22 Joseph F Komar Hydraulic descaling
    US3419220A (en) * 1966-11-30 1968-12-31 Gulf Research Development Co Nozzles for abrasive-laden slurry
    GB1279399A (en) * 1968-12-03 1972-06-28 British Petroleum Co Nozzle
    US4380319A (en) * 1978-01-16 1983-04-19 Edward A. Sokolski Liquid spray nozzle
    JPS56100663A (en) * 1980-01-14 1981-08-12 Tokai Gokin Kogyo Kk Spraying nozzle
    DE3113028C2 (en) * 1981-04-01 1983-10-13 Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht Device for the surface treatment of underwater structures and ships
    US4572165A (en) * 1982-12-03 1986-02-25 Jacques Dodier Hydrokinetic injector, particularly for balneotherapeutic applications
    US4813611A (en) * 1987-12-15 1989-03-21 Frank Fontana Compressed air nozzle
    US5066335A (en) * 1989-05-02 1991-11-19 Ogilvie Mills Ltd. Glass-like polysaccharide abrasive grit
    FR2712826A1 (en) * 1993-11-26 1995-06-02 Ind Centre Surface treatment nozzle, and surface treatment method using such a nozzle.
    US5779523A (en) * 1994-03-01 1998-07-14 Job Industies, Ltd. Apparatus for and method for accelerating fluidized particulate matter
    DE19541174C2 (en) * 1995-11-04 1998-11-26 Spraying Systems Deutschland G High performance jet nozzle
    US5616067A (en) * 1996-01-16 1997-04-01 Ford Motor Company CO2 nozzle and method for cleaning pressure-sensitive surfaces
    US6394369B2 (en) * 1999-12-22 2002-05-28 Visteon Global Tech., Inc. Nozzle

    Also Published As

    Publication number Publication date
    DE60112029T2 (en) 2006-06-01
    EP1221358A3 (en) 2002-09-18
    CA2365343A1 (en) 2002-07-04
    GB2372718B (en) 2004-07-14
    US20020088881A1 (en) 2002-07-11
    GB2372718A (en) 2002-09-04
    EP1221358A2 (en) 2002-07-10
    US6726130B2 (en) 2004-04-27
    ES2246302T3 (en) 2006-02-16
    ATE299780T1 (en) 2005-08-15
    DE60112029D1 (en) 2005-08-25
    GB0100198D0 (en) 2001-02-14

    Similar Documents

    Publication Publication Date Title
    EP1221358B1 (en) Nozzle for concentrated diffusion of a fluid containing solid particles, especially for fine and precise cleaning and inspection of surfaces
    EP0090691B1 (en) Blast gun for flat jets containing solid abrasive particles
    EP0281438B1 (en) Device for the electrostatic spraying of powdery products
    EP2986857B1 (en) Venturi effect pump and a device for applying a layer of paint
    FR3029959A1 (en) COOLING OF ENGINE COMPONENTS
    EP2100668B1 (en) Spray nozzle and liquid spraying device comprising said spray nozzle
    FR2810908A1 (en) Flat screen multifunction cleaning unit having glass layer continuous plane elements air curtain/ultraviolet radiation/brush/ultra rapid cleaning element and V type air strip fed.
    EP1270101B1 (en) Thin webbed tubular structure and method for making the same
    FR2575678A1 (en) PNEUMATIC POWDER EJECTOR
    WO2009103891A2 (en) Device for blowing a gas on a surface of a running strip material
    EP3231516A1 (en) Spray nozzle, in particular for a system for dispensing a pressurized fluid provided with a pushbutton, and dispensing system comprising such a nozzle
    WO1984001528A1 (en) Device for the erosion of a solid surface by a cavitation flow
    WO2006111363A1 (en) High-pressure liquid atomisation nozzle for a machine for cleaning optical lenses or other substrates
    EP2361157B1 (en) Coating material ejector
    EP0914241B1 (en) Method for treating a surface by dry process and device for implementing same
    WO2006097133A1 (en) Device and method for nozzle stripping by spraying a fluid loaded with solid particles forming an optimized stripping front
    EP0914855B1 (en) Separator of water contained in a fluid stream
    WO2018096235A1 (en) An electrode for an apparatus for processing the surface of a moving substrate, corresponding processing apparatus and unit
    WO2020201215A1 (en) Nozzle for a spray system and spray system comprising such a nozzle
    FR2584953A1 (en) HIGH SPEED BLOWING NOZZLE
    WO2018091797A1 (en) Treatment unit for a facility for treating the surface of a substrate in motion, corresponding facility and method of implementation
    FR2712826A1 (en) Surface treatment nozzle, and surface treatment method using such a nozzle.
    FR2755153A1 (en) COMPOSITE VENEER APPARATUS FOR THE INTERNAL SURFACE OF A WORKPIECE
    FR2721536A1 (en) System for atomising liquid
    CA2355701A1 (en) Device for diffusing sterilized air in a fabric sheath

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Kind code of ref document: A3

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    17P Request for examination filed

    Effective date: 20020910

    17Q First examination report despatched

    Effective date: 20021122

    AKX Designation fees paid

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    19U Interruption of proceedings before grant

    Effective date: 20021220

    19W Proceedings resumed before grant after interruption of proceedings

    Effective date: 20030915

    GRAP Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOSNIGR1

    RAP1 Party data changed (applicant data changed or rights of an application transferred)

    Owner name: WORKINTER LIMITED

    GRAS Grant fee paid

    Free format text: ORIGINAL CODE: EPIDOSNIGR3

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    DX Miscellaneous (deleted)
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050720

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050720

    Ref country code: TR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050720

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050720

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

    REF Corresponds to:

    Ref document number: 60112029

    Country of ref document: DE

    Date of ref document: 20050825

    Kind code of ref document: P

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20051020

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20051020

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20051020

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: ISLER & PEDRAZZINI AG

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20051102

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20051220

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20051221

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20051231

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20051231

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2246302

    Country of ref document: ES

    Kind code of ref document: T3

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20060421

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PCAR

    Free format text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH)

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: ES

    Payment date: 20071219

    Year of fee payment: 7

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: CH

    Payment date: 20071220

    Year of fee payment: 7

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: BE

    Payment date: 20071231

    Year of fee payment: 7

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20071218

    Year of fee payment: 7

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20080227

    Year of fee payment: 7

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: TP

    BERE Be: lapsed

    Owner name: *WORKINTER LTD

    Effective date: 20081231

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20081220

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IE

    Payment date: 20071220

    Year of fee payment: 7

    Ref country code: IT

    Payment date: 20081224

    Year of fee payment: 8

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: MM4A

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081231

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081222

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081231

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090701

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081231

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081220

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20081222

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20081222

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20091220

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: CD

    Owner name: SATIL CONCEPT, FR

    Effective date: 20111115

    Ref country code: FR

    Ref legal event code: TP

    Owner name: SATIL CONCEPT, FR

    Effective date: 20111115

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20141127

    Year of fee payment: 14

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20160831

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20151231