EP0271316B1 - Buse transformable pour la pulvérisation - Google Patents

Buse transformable pour la pulvérisation Download PDF

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Publication number
EP0271316B1
EP0271316B1 EP87310777A EP87310777A EP0271316B1 EP 0271316 B1 EP0271316 B1 EP 0271316B1 EP 87310777 A EP87310777 A EP 87310777A EP 87310777 A EP87310777 A EP 87310777A EP 0271316 B1 EP0271316 B1 EP 0271316B1
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EP
European Patent Office
Prior art keywords
liquid
chamber
stream
air
nozzle
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
EP87310777A
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German (de)
English (en)
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EP0271316A2 (fr
EP0271316A3 (en
Inventor
James Haruch
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Spraying Systems Co
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Spraying Systems Co
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Filing date
Publication date
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Publication of EP0271316A2 publication Critical patent/EP0271316A2/fr
Publication of EP0271316A3 publication Critical patent/EP0271316A3/en
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Publication of EP0271316B1 publication Critical patent/EP0271316B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1254—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated
    • 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
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed

Definitions

  • the present invention relates generally to spray nozzles and, more particularly, to spray nozzles which are adapted for the application of liquids such as agricultural chemicals.
  • Such a spray nozzle comprises an elongated hollow nozzle body having first and second ends, a chamber defined in said body, means in said body defining an air inlet port through which a pressurized stream of air may be injected into said chamber, means in said body defining a liquid inlet port for introducing liquid into said body, means in said body for causing said liquid to flow through said chamber in a stream which mixes with the pressurized stream of air injected into said chamber through said air inlet port whereby said liquid is preliminarily atomized in said chamber, and an orifice member inserted removably into said body remote from said liquid inlet port.
  • a pressurized air stream is injected into the body of the nozzle to preatomize the liquid before it is discharged from the spray tip of the nozzle.
  • non-air assisted nozzles i.e., conventional hydraulic nozzles
  • the spray pattern is formed as the pressurized liquid is discharged from the nozzle tip.
  • a liquid spray nozzle comprises a hollow nozzle body which defines a chamber, means in said body defining an air inlet port through which a pressurized stream of air may be directed into said chamber, selectively actuatable means for directing pressurized air through said air inlet port, means in said body defining a liquid inlet port for introducing a liquid flow stream into said body , means for directing pressurized liquid through said liquid inlet port, and an insert member removably mountable into said body, characterized in that said insert member is formed with an internal liquid flow passageway through which liquid introduced into said body passes and an impingement surface in line with the direction of passage of said liquid through said liquid passageway and against which said liquid strikes for deflecting said liquid and mixing it with a pressurized stream of air introduced into said body chamber from said air inlet port upon actuation of said pressurized air directing means whereby the liquid is preliminarily atomized in said chamber, and a spray tip which defines a discharge orifice
  • the present invention provides a new and improved spray nozzle which may be used either as an air assisted nozzle or as a hydraulic nozzle by making a relatively simple and easy conversion to the nozzle.
  • a kit may be provided comprising a relatively simple and inexpensive nozzle body and comprising internal components adapted to be inserted interchangeably into the body to enable the same body to be used either as part of an air assisted nozzle according to the first aspect of the invention or as part of a hydraulic nozzle according to the second aspect of the invention.
  • the construction of the insert when used in the nozzle body, effects turbulent mixing of pressurized air and liquid so as to produce good preatomization of the liquid before the liquid is discharge from the nozzle.
  • FIGURE 1 is a fragmentary and elevational view, partially in cross-section, of a new and improved spray nozzle incorporating the unique features of the present invention, the view being taken substantially along the line 1-1 of FIG. 2.
  • FIG. 2 is a fragmentary cross-section taken substantially along the line 2-2 of FIG. 1.
  • FIG. 3. is a fragmentary cross-section taken substantially along the line 3-3 of FIG. 2 and shows certain parts of the nozzle in moved positions.
  • FIG. 4. is a fragmentary cross-section taken substantially along the line 4-4 of FIG. 2.
  • FIG. 5. is an exploded perspective view of certain parts of the nozzle.
  • FIG. 6. is an exploded perspective view showing a modified version of one of the nozzle parts.
  • FIG. 7. is a view similar to FIG. 2. but shows the nozzle as having been converted from an air assisted nozzle to a hydraulic nozzle.
  • the invention is shown in the drawings as embodied in a spray nozzle 10 which is adapted for use in spraying liquid and particularly for spraying liquid fertilizer or insecticide on an agricultural field.
  • a spray nozzle 10 which is adapted for use in spraying liquid and particularly for spraying liquid fertilizer or insecticide on an agricultural field.
  • several nozzles are secured to and are spaced along an elongated hollow boom (not shown) which also serves as a manifold for delivering liquid under high pressure to the nozzles.
  • the nozzle 10 includes an elongated hollow body 11 molded of plastic and having opposite end hubs 12 and 13 which are externally threaded.
  • An internally threaded hub 14 is formed integrally with and projects from one side of the body and receives a threaded pipe 15 which communicates with the boom to receive pressurized liquid therefrom.
  • the lower end of the hub 14 defines a circular inlet port 16 (FIG. 2) through which liquid is introduced into the nozzle body 11.
  • a discharge nozzle tip 20 is located adjacent the end of the hub 12 of the body 11.
  • the latter is formed with a radially extending peripheral flange 21 which is clamped to the end of the hub 12 by a clamping nut or cap 22 adapted to be threaded onto the hub.
  • An annular gasket 23 is interposed between the tip 21, the cap 22 and the end of the hub 12 in order to seal the perimeter of the tip.
  • An axially extending discharge orifice 25 is formed through the nozzle tip 20.
  • a deflector flange 26 (FIG. 2) which is disposed transversely to the line of travel of the liquid flowing through the discharge orifice 25.
  • the deflector flange directs the particles into a well-defined flat fan spray pattern transverse to the axis of the nozzle body 11.
  • Liquid which is admitted into the nozzle body 11 via the inlet port 16 is shaped into a longitudinally flowing stream by a cylindrical tube 30 (FIG. 2.).
  • the tube is coaxial with and is spaced inwardly from the wall of the body and its downstream end is threadably connected to the body at 31.
  • the tube coacts with a resiliently flexible diaphragm 32 to form an antidrip valve which prevents liquid from dripping from the nozzle tip 20 after the supply of pressurized liquid to the inlet pipe 15 has been cut off.
  • the diaphragm is located adjacent the upstream end of the tube 30 and its peripheral margin is clamped between the end of the hub 13 and a cap 33 which is threaded onto the hub.
  • a valve follower 34 is supported slidably within the cap and is operably connected to the diaphragm.
  • Telescoped into the cap is a coiled compression spring 35 which urges the diaphragm toward a closed position against the upstream end of the tube 30 as shown in FIG. 2.
  • the pressurized liquid urges the diaphragm 32 away from the upstream end of the tube as shown in FIG. 3. so as to enable the liquid to flow through the tube and to be sprayed from the nozzle tip 20.
  • the spring 35 forces the diaphragm 32 into sealing engagement with the upstream end of the tube 30 so as to substantially prevent liquid from dripping out of the nozzle tip.
  • the nozzle 10 is basically suitable for use as a hydraulic or non-air assisted nozzle in the same general manner as the nozzle disclosed in the aforementioned Butterfield et al application.
  • a pure hydraulic nozzle i.e., a non-air assisted nozzle
  • Hydraulic nozzles are generally preferred for use under conditions where it is desired to spray a field with relatively large quantities of a liquid chemical solution having a high percentage of water.
  • an air assisted nozzle is a nozzle in which the liquid flows through the nozzle at a comparatively slow flow rate and in which a pressurized stream of air is injected into the nozzle in order to preliminarily break up or atomize the liquid prior to the liquid being sprayed from the nozzle tip.
  • Air assisted nozzles are generally used in situations where a comparatively small quantity of a more highly concentrated chemical solution is to be sprayed on a field of given area.
  • the nozzle 10 is provided with a unique insert member 40 (FIGS. 2 and 5) which may be placed in the nozzle to enable the nozzle to operate in an air assisted mode and which may be removed easily from the nozzle to convert the nozzle for use in a hydraulic mode.
  • the insert 40 permits the nozzle 10 to be easily changed over from air assisted to hydraulic, or vice versa, without need of maintaining a supply of each type of nozzle and without need of removing one type of nozzle from the boom and installing the other type of nozzle on the boom each time a conversion is made.
  • the insert 40 includes a tubular orifice member 41 (FIGS. 2 and 5) made of brass or the like.
  • the orifice member is cylindrical and is telescoped into the downstream end of the tube 30 with a tight but sliding fit.
  • An O-ring 42 (FIG. 2) fits within a groove 43 (FIG. 5) around the outer periphery of the orifice member 41 and is compressed against the inner wall of the tube 30 to establish a seal between the orifice member and the tube.
  • a flow restricting orifice 45 Formed through the downstream end portion of the orifice member 41 is a flow restricting orifice 45 which serves to reduce the flow rate of liquid flowing from the tube 30 toward the nozzle tip 20.
  • the orifice includes a frustoconical upstream portion whose small diameter end joins a cylindrical downstream portion.
  • a tubular screen-like strainer 46 extends from the upstream end of the orifice member 41 and is spaced radially inwardly from the wall of the tube 30 so that liquid entering the tube must pass radially through the strainer before flowing to the orifice 45.
  • One end of the strainer 46 abuts the upstream end of the orifice member 41 while the other end of the strainer abuts and is closed off by the head 47 (FIG. 5) of a pin 48.
  • the latter is telescoped slidably into both the strainer and the upstream end of the orifice member.
  • the pin is of cruciform cross-section and is formed with four angularly spaced fins 49 (FIG. 5) which define flow passages permitting liquid to flow through the strainer and into the orifice member.
  • the pin 48 may be pulled out of the orifice member 41 and then the strainer 46 may be pulled off of the pin to permit cleaning or replacement of the strainer.
  • a modified pin 48 for supporting the strainer 46 is shown in FIG. 6.
  • the pin is hollow and generally cylindrical and is formed with four angularly spaced and longitudinally extending slots 49' which permit liquid to flow into the pin and then to the orifice member 41.
  • Two axially spaced rings 50 extend circumferentially around the pin 48 and hold the strainer in radially outwardly spaced relation with the body of the pin.
  • the insert 40 includes an elongated impingement element 55 (FIG. 5) for breaking up the stream of liquid flowing through the orifice 45 and for causing the liquid to mix with a pressurized air stream which also is broken up by the impingement element.
  • the impingement element 55 is in the form of an elongated and flat bar formed integrally with the downstream end of the orifice member 41, the bar being of rectangular cross-section.
  • the bar 55 extends longitudinally into an axially elongated mixing chamber 56 of circular cross-section defined within the nozzle body 11. As shown in FIGS. 2 and 3, the rectangular bar 55 is spaced inwardly from the circular wall of the chamber around the entire periphery of the bar.
  • a transversely extending circular hole 60 is formed through the bar 55 immediately downstream of the orifice 45.
  • the hole 60 communicates with the orifice 45 and, as pressurized liquid is discharged from the orifice, it strikes the downstream wall of the hole.
  • the downstream wall thus defines an impingement surface which deflects the liquid transversely to break up the liquid and cause the liquid to flow through the chamber 56 along the sides of the bar 55.
  • a pressurized stream of air which is admitted into the chamber 56 through a circular air inlet port 62 (FIG. 3) formed in the nozzle body 11 and extending transversely to the chamber and the stream of liquid flowing through the chamber.
  • the inlet port 62 is located at the inner end of a fitting 63 (FIGS. 1 and 3) joined to the nozzle body 11 and connected to a flexible tube 64 which communicates with a supply of pressurized air by way of a shut off valve 65.
  • a stream of pressurized air is injected transversely into the chamber 56.
  • the axis of the air inlet port 62 extends parallel to the axis of the hole 60 in the bar 55 but the port 62 is smaller in diameter than the hole 60 and its axis is offset in a downstream direction from the axis of the hole.
  • the surface 66 defines an impingement surface which deflects and breaks up the air stream.
  • the insert 40 is completed by two radially spaced webs 70 (FIG. 5) formed integrally with and extending axially from the bar 55 and having downstream ends joined to a cylindrical sleeve 71.
  • a cylindrical sleeve 71 Formed on the downstream end of the sleeve is an outwardly radially extending flange 72 which is adapted to be clamped by the cap 22 between the sealing gasket 23 and an internal shoulder at the downstream end portion of the nozzle body 11.
  • An axially extending key 73 (FIG.
  • the insert 40 When the insert 40 is in place in the nozzle body 11, the flow rate of the liquid stream is reduced by the orifice 45 and, in addition, the stream is preliminarily atomized by the coaction of the wall of the hole 60, the impingement surface 66 of the bar 55 and the mutually transverse flow relation between the liquid stream and the air stream.
  • the insert 40 may be removed from the body 11 simply by unscrewing the cap 22 and taking the cap, the nozzle tip 20 and the sealing gasket 23 off of the body as a unit. Thereafter, the insert with the attached pin 48 and strainer 46 may be pulled axially out of the downstream end of the body 11.
  • the nozzle 10 When the insert 40 is out of the body 11, the nozzle 10 may be converted for use in a hydraulic mode simply by placing a tubular strainer 80 in the chamber 56 as shown in FIG. 7.
  • the strainer 80 is telescoped over a pin 81 which may be similar to the pins 48 or 48' and which is formed with a radially extending flange 83 at its downstream end.
  • the flange 83 is adapted to be clamped against the internal shoulder in the body 11 by the gasket 23 when the cap 22 and the nozzle tip 20 are screwed back on to the body.
  • the latter may be of the quick disconnect bayonet type such as disclosed in Butterfield et al United States Patent 4,527,745.
  • the strainer 80 also may be similar to the strainer disclosed in such patent.
  • the air fitting 63 is closed off to prevent liquid from escaping through the fitting. This may be accomplished either by shutting off the valve 65, by pinching the tube 64 closed with a clamp or by disconnecting the tube from the fitting 63 and inserting a plug into the fitting.
  • the present invention brings to the art a new and improved nozzle 10 which may be quickly and easily converted between an air assisted, relatively low flow rate mode and a non-air assisted, comparatively high flow rate mode.
  • the nozzle When set up in the air assisted mode, the nozzle effects very good preliminary atomization of the liquid as a result of the interaction of the insert 40 with the air and liquid streams.

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Claims (11)

  1. Buse de pulvérisation qui peut être convertie d'une buse assistée par air à une buse non assistée par air, ladite buse de pulvérisation comportant un corps de buse creux et allongé (11) ayant des première et seconde extrémités (12, 13), une chambre (56) définie dans ledit corps (11), des moyens (63) dans ledit corps définissant une lumière (62) d'arrivée d'air à travers laquelle un courant d'air comprimé peut être injecté dans ladite chambre (56), des moyens (14) dans ledit corps définissant une lumière (16) d'arrivée de liquide pour l'introduction d'un liquide dans ledit corps (11), des moyens dans ledit corps destinés à provoquer un écoulement dudit liquide à travers ladite chambre (56) en un courant qui se mélange avec le courant d'air comprimé injecté dans ladite chambre à travers ladite lumière (62) d'arrivée d'air de façon que ledit liquide soit atomisé de manière préliminaire dans ladite chambre (56), un élément à orifice (40) inséré de façon amovible dans ledit corps (11) à distance de ladite lumière (16) d'arrivée de liquide, caractérisée en ce que ledit élément à orifice (40) définit un orifice (45) destiné à restreindre le débit d'écoulement dudit courant de liquide après que ce courant est entré dans ladite lumière (16) d'arrivée de liquide et avant que ce courant soit atomisé de façon préliminaire dans ladite chambre (56) par ledit courant d'air, des moyens définissant un orifice (25) de décharge situé à proximité immédiate de ladite première extrémité (12) dudit corps (11) et en communication de fluide avec ladite chambre (56), ledit orifice de décharge (25) recevant du liquide atomisé de façon préliminaire provenant de ladite chambre (56) et amenant ce liquide à être pulvérisé à l'extérieur de ladite buse, et des moyens (22) situés sur ledit corps (11) et pouvant en être enlevés sélectivement pour permettre audit élément à orifice (40) d'être retiré dudit corps (11) afin de permettre audit courant de liquide de s'écouler à travers ladite chambre (56) sans que le débit d'écoulement du courant de liquide soit restreint avant que ce courant atteigne ledit orifice de décharge (25).
  2. Buse de pulvérisation selon la revendication 1, caractérisée en ce que ladite chambre (56) est allongée et dans laquelle ledit courant d'air est injecté transversalement dans ladite chambre (56), ledit courant de liquide entrant dans ladite chambre en s'écoulant longitudinalement, et des moyens (55) dans ladite chambre étant destinés à dévier lesdits courants d'air et de liquide pour favoriser leur mélange et pour favoriser une atomisation préliminaire dudit liquide, lesdits moyens de déviation (55) étant reliés audit élément à orifice (40) et pouvant être enlevés dudit corps (11) sous la forme d'un bloc avec ledit élément à orifice (40).
  3. Buse de pulvérisation selon la revendication 2, caractérisée en ce que lesdits moyens de déviation comprennent une barre (55) s'étendant longitudinalement à ladite chambre (56) et espacés transversalement vers l'intérieur de ses parois, ladite barre (55) étant réalisée d'une seule pièce avec ledit élément à orifice (40), un trou (60) formé à travers ladite barre (55), s'étendant transversalement à celle-ci et placé immédiatement en aval de l'orifice (45) dudit élément à orifice (40) et en communication de fluide avec lui afin qu'un liquide déchargé à travers cet orifice (45) frappe la paroi d'aval dudit trou (60) et soit dévié transversalement pour s'écouler le long des côtés de ladite barre (55).
  4. Buse de pulvérisation selon la revendication 3, caractérisée en ce que l'axe dudit trou (60) s'étend parallèlement à, et est espacé en amont de, l'axe de ladite lumière (62) d'arrivée d'air, ladite lumière (62) d'arrivée d'air étant seulement en alignement partiel avec ledit trou (60) afin qu'une partie du courant d'air injectée à travers ladite lumière (62) d'arrivée d'air frappe contre ladite barre (55) tandis qu'une autre partie dudit courant d'air passe dans ledit trou (60).
  5. Buse de pulvérisation selon la revendication 2, caractérisée en ce que ledit élément à orifice (40) est tubulaire, un pointeau (48) logé télescopiquement dans la partie extrême d'amont dudit élément à orifice (40), un filtre tubulaire (46) disposé télescopiquement sur ledit pointeau (48), ledit pointeau (48) comportant des moyens (49) permettant à un liquide de s'écouler à travers ledit filtre (46) et de pénétrer dans ledit élément à orifice (40).
  6. Buse de pulvérisation selon la revendication 2, caractérisée en ce qu'elle comprend en outre un manchon (71) sur l'extrémité d'aval desdits moyens de déviation (55) en communication de fluide avec ladite chambre (56), une bride (72) s'étendant radialement sur l'extrémité d'aval dudit manchon (71), lesdits moyens pouvant être enlevés sélectivement comprenant un chapeau (22) sur ladite première extrémité (12) dudit corps (11) et pouvant être manoeuvrés pour serrer ladite bride (72) contre ladite première extrémité (12) dudit corps (11).
  7. Buse de pulvérisation selon la revendication 6, caractérisée en ce que ledit orifice (25) de décharge est supporté par ledit chapeau (22).
  8. Buse de pulvérisation de liquide comportant un corps de buse creux (11) qui définit une chambre (56), des moyens (63) dans ledit corps (11) définissant une lumière (62) d'arrivée d'air à travers laquelle un courant d'air comprimé peut être dirigé dans ladite chambre (56), des moyens pouvant être actionnés sélectivement et destinés à diriger de l'air comprimé à travers ladite lumière (62) d'arrivée d'air, des moyens (14) dans ledit corps définissant un orifice (16) d'arrivée de liquide pour l'introduction d'un courant d'écoulement de liquide dans ledit corps (11), des moyens destinés à diriger un liquide sous pression à travers ladite lumière (62) d'arrivée de liquide, et un élément rapporté (40) pouvant être monté de façon amovible dans ledit corps (11), caractérisée en ce que ledit élément rapporté (40) est formé de façon à présenter un passage intérieur d'écoulement de liquide dans lequel passe un liquide introduit dans ledit corps (11) et une surface (55) d'impact en alignement avec la direction d'écoulement dudit liquide dans ledit passage à liquide et contre laquelle ledit liquide frappe de façon à dévier ledit liquide et à le mélanger à un courant d'air comprimé introduit depuis ladite lumière (62) d'arrivée d'air dans ladite chambre (56) du corps à la suite d'un actionnement desdits moyens dirigeant l'air comprimé de façon que le liquide soit atomisé de manière préliminaire dans ladite chambre (56), et un embout (20) de pulvérisation qui définit un orifice de décharge (25) en communication de fluide avec ladite chambre (56) pour recevoir le liquide préliminairement atomisé provenant de ladite chambre (56) et amener ledit liquide à être pulvérisé à l'extérieur de ladite buse en une configuration prédéterminée de gouttelettes de liquide.
  9. Buse de pulvérisation de liquide selon la revendication 8, caractérisée en ce que ledit passage d'écoulement de l'élément rapporté définit un orifice (45) destiné à restreindre l'écoulement dudit courant de liquide avant qu'il frappe ladite surface d'impact (55).
  10. Buse de pulvérisation de liquide selon la revendication 8, caractérisée en ce que ladite lumière (62) d'arrivée d'air dirige un courant d'air comprimé dans ladite chambre dans une direction transversale à la direction du liquide s'écoulant dans ledit passage de l'élément rapporté, ladite lumière (62) d'arrivée d'air dirige de l'air comprimé vers l'intérieur de ladite chambre (56) afin qu'au moins une partie de cet air passe sur ladite surface d'impact (55), et ladite surface d'impact (55) de l'élément rapporté est orientée de façon à être disposée sensiblement perpendiculairement à la direction d'écoulement du liquide dans ledit passage d'écoulement de l'élément rapporté.
  11. Buse de pulvérisation de liquide selon la revendication 1, caractérisée en ce qu'elle comprend des moyens situés sur ledit corps et pouvant en être enlevés sélectivement pour permettre audit élément rapporté (40) d'être enlevé dudit corps (11) afin que, à la suite d'un désactionnement des moyens dirigeant de l'air comprimé, un courant de liquide introduit dans ledit corps (11) à partir de ladite lumière (16) d'arrivée de liquide s'écoule à travers ladite chambre (11) sans porter contre une surface d'impact (55) et sans atomisation préliminaire notable, et soit distribué directement par ledit embout (20) de pulvérisation en une configuration prédéterminée de pulvérisation de gouttelettes de liquide.
EP87310777A 1986-12-11 1987-12-08 Buse transformable pour la pulvérisation Expired - Lifetime EP0271316B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US940290 1978-09-07
US94029086A 1986-12-11 1986-12-11

Publications (3)

Publication Number Publication Date
EP0271316A2 EP0271316A2 (fr) 1988-06-15
EP0271316A3 EP0271316A3 (en) 1990-01-10
EP0271316B1 true EP0271316B1 (fr) 1992-09-02

Family

ID=25474575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87310777A Expired - Lifetime EP0271316B1 (fr) 1986-12-11 1987-12-08 Buse transformable pour la pulvérisation

Country Status (9)

Country Link
EP (1) EP0271316B1 (fr)
JP (1) JP2802496B2 (fr)
KR (1) KR950000003B1 (fr)
AU (1) AU610098B2 (fr)
BR (1) BR8706761A (fr)
CA (1) CA1291781C (fr)
DE (1) DE3781529T2 (fr)
DK (1) DK169611B1 (fr)
MX (1) MX164218B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157591B (en) * 1984-04-19 1987-11-25 Spraying Systems Co Air-assisted spray nozzle
DE4102632A1 (de) * 1991-01-30 1992-08-06 Pfeiffer Erich Gmbh & Co Kg Austragduese fuer medien
CN1133393C (zh) * 1996-02-26 2004-01-07 松下电器产业株式会社 淋浴装置
DE19901704A1 (de) * 1999-01-18 2000-08-03 Hansgrohe Ag Sanitärgegenstand, insbesondere Handbrause, mit einer Umschalteinrichtung zur Beeinflussung einer Flüssigkeitsströmung
US7584908B2 (en) 2005-10-27 2009-09-08 Sta-Rite Industries, Llc Spray nozzle apparatus and method
CN100355502C (zh) * 2006-01-26 2007-12-19 朱根荣 喷雾装置
JP6102170B2 (ja) * 2011-12-22 2017-03-29 Ｊｆｅスチール株式会社 スプレーノズル用ノズルフィルタ及びスプレーノズル
GB201212199D0 (en) 2012-07-09 2012-08-22 Rigdeluge Global Ltd Nozzle apparatus
US9925508B2 (en) 2013-11-12 2018-03-27 Spraying Systems Co. Catalytic cracking spray nozzle with internal liquid particle dispersion ring
CN104525397B (zh) * 2014-12-25 2023-05-30 重庆新派工业设计有限公司 可清洗型喷嘴
CN107088484B (zh) * 2017-06-28 2023-07-18 迈德乐喷雾系统广州有限公司 一种小型空气雾化喷嘴

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343434A (en) * 1980-04-28 1982-08-10 Spraying Systems Company Air efficient atomizing spray nozzle
GB2157591B (en) * 1984-04-19 1987-11-25 Spraying Systems Co Air-assisted spray nozzle

Also Published As

Publication number Publication date
DK648987D0 (da) 1987-12-10
BR8706761A (pt) 1988-07-19
DE3781529T2 (de) 1993-02-04
KR880007134A (ko) 1988-08-26
MX164218B (es) 1992-07-27
JP2802496B2 (ja) 1998-09-24
AU610098B2 (en) 1991-05-16
EP0271316A2 (fr) 1988-06-15
KR950000003B1 (ko) 1995-01-07
AU8207187A (en) 1988-06-16
DK169611B1 (da) 1994-12-27
EP0271316A3 (en) 1990-01-10
DE3781529D1 (de) 1992-10-08
CA1291781C (fr) 1991-11-05
JPS63185469A (ja) 1988-08-01
DK648987A (da) 1988-06-12

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