(19)
(11)EP 2 837 426 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
24.06.2020 Bulletin 2020/26

(21)Application number: 14179167.3

(22)Date of filing:  30.07.2014
(51)Int. Cl.: 
B05B 1/34  (2006.01)
F23D 11/38  (2006.01)

(54)

Double swirl chamber swirlers

Doppelverwirbler für Wirbelkammern

Double chambre de tourbillonnement


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 15.08.2013 US 201361866301 P
24.01.2014 US 201414163150

(43)Date of publication of application:
18.02.2015 Bulletin 2015/08

(73)Proprietors:
  • Delavan Inc.
    West Des Moines, IA 50265 (US)
  • Delavan Limited
    Solihull West Midlands B90 4LA (GB)

(72)Inventors:
  • Prociw, Lev A.
    St. Johnston, IA 50131 (US)
  • Whittaker, Frank
    Warrington, Cheshire WA4 2JN (GB)
  • Smith, Neil
    Wigan, Lancashire WN5 7PJ (GB)

(74)Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)


(56)References cited: : 
WO-A1-00/54887
WO-A1-03/068408
DE-A1- 19 815 775
JP-A- S6 369 554
US-A- 3 680 793
WO-A1-81/02693
WO-A1-2006/059065
GB-A- 760 972
US-A- 3 532 271
US-A- 3 771 728
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    BACKGROUND OF THE INVENTION


    1. Field of the Invention



    [0001] The present disclosure relates to nozzles, and more particularly to swirler elements for nozzles for swirling fluid flowing through the nozzle, for example as in spray dry nozzles.

    2. Description of Related Art



    [0002] Fluid nozzles or atomizers having spiral swirl chambers have been employed for various applications including spray drying, aeration, cooling, and fuel injection. Such nozzles operate by forcing a fluid composed of a liquid and a suspension, dispersion, emulsion, or slip of abrasive material through a swirl chamber. The swirl chamber changes the direction of the liquid and imparts a rotation or swirl to the fluid flow. This causes the fluid to exit the nozzle in a cone of small droplets that are well dispersed into the environment outside the nozzle.

    [0003] In applications such as spray drying, the fluid feed pressure supplies the energy for fluid atomizing. The fluid feed pressure can exceed 5,000 psi (34 MPa), and in certain applications, exceeds 10,000 psi (69 MPa). Because of the nature of the fluid and the high pressure of the pumping process, swirl units can require frequent replacement due to erosion of the surfaces defining the swirl chamber. Replacement requires taking the process equipment out of service, replacing the eroded swirler unit, and returning the process equipment to service. Such replacement events reduce the availability of the process equipment during the replacement process.

    [0004] DE 19815775 discloses a swirl disk comprising an intake area, a swirl chamber and an outlet orifice.

    [0005] GB 760972 discloses a circulation chamber provided with a cylindrical inner wall and a fixed tangential inlet.

    [0006] WO 00/54887 discloses a nasal spray actuator with a swirl pin. Conventional swirler units have generally been considered satisfactory for their intended purpose. However, there is a need for swirler units that allow for increased usable life. There is also a continuing need for swirler units that are easy to make and use. The present disclosure provides solutions to these needs.

    SUMMARY OF THE INVENTION



    [0007] The present invention provides a swirler assembly for swirling fluid in a nozzle comprising: a swirler comprising a swirler body defining: an inlet end; an outlet end opposed to the inlet end; and a circumferential periphery extending axially from the inlet end to the outlet end, wherein the outlet end defines a first swirl chamber and the inlet end defines a second swirl chamber; characterized by a cap engaged with the inlet end of the swirler body for closing off the second swirl chamber, wherein the cap includes a swirl chamber insert for mating engagement with the second swirl chamber to close off the second swirl chamber.

    [0008] In certain embodiments, the swirler has a feed channel defined in the circumferential periphery from the inlet end to the outlet end of the swirler body. The feed channel can define a channel surface with an arcuate cross-section, so if placed in a circular interior bore the channel surface and interior bore define a flow passage with a biconvex lens shaped cross-section. The first swirl chamber can be in fluid communication with the feed channel for supplying fluid from the feed channel to be swirled in the first swirl chamber. The second swirl chamber can also be in fluid communication with the feed channel for supplying fluid from the feed channel to be swirled in the second swirl chamber.

    [0009] In accordance with certain embodiments, a tangential swirl slot is defined in the outlet end of the swirler body, placing the feed channel in fluid communication with the first swirl chamber and for imparting swirl on fluid fed into the first swirl chamber. A second tangential swirl slot can be defined in the inlet end of the swirler body to place the feed channel in fluid communication with the second swirl chamber and for imparting swirl on fluid fed into the second swirl chamber. Each tangential swirl slot can include a metering orifice for metering flow into the first swirl chamber. The tangential swirl slots can be angled to provide counter-clockwise swirl in one of the first and second swirl chambers and clockwise swirl in the other of the first and second swirl chambers. The cap may define a lunate cutout corresponding to the feed channel.

    [0010] A spray nozzle may include a nozzle body with an interior bore. The interior bore may extend from an inlet to an opposed outlet and may have an interior locating surface defined within the interior bore. A swirler assembly as described above may be disposed within the interior bore and may be engaged with the locating surface such that the first swirl chamber is positioned proximate the outlet of the nozzle body. An orifice disc may be disposed within the interior bore between the swirler and the outlet of the nozzle body. The orifice disc may define an orifice therethrough in fluid communication with the swirl chamber and the outlet of the nozzle body for issuing a swirling spray from the nozzle body outlet.

    [0011] In certain embodiments, a locking member can be engaged within the interior bore for locking the swirl element and orifice disc within the interior bore. The locking member can define a flow passage from the inlet of the nozzle body to the channel of the swirl element.

    [0012] A kit may include a spray nozzle. The spray nozzle may include a nozzle body, a swirler, an orifice disc, and a cap. The nozzle body may define an interior bore extending from an inlet to an opposed outlet with an interior locating surface defined in the interior bore. The swirler assembly may be as described above and configured to be disposed within the interior bore and engaged with the locating surface with the first swirl chamber positioned proximate the outlet of the nozzle body. The orifice disc may be configured to be disposed within the interior bore between the swirler and the outlet of the nozzle body, and may define an orifice therethrough for fluid communication with the swirl chamber and the outlet of the nozzle body for issuing a swirling spray from the nozzle body outlet. The kit also can include a second cap configured to be disposed within the interior bore and engaged with the outlet end of the swirler body for closing off the first swirl chamber when the second swirl chamber is in use. The second cap can also include a swirl chamber insert for mating engagement with the first swirl chamber to close off the first swirl chamber.

    [0013] These and other features of the systems and methods of the subject disclosure will become more readily apparent to those skilled in the art from the following detailed description of the preferred embodiments taken in conjunction with the drawings.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0014] So that those skilled in the art to which the subject disclosure appertains will readily understand how to make and use the devices and methods of the subject disclosure without undue experimentation, preferred embodiments thereof will be described in detail herein below by way of example only with reference to certain figures, wherein:

    Fig. 1 is a perspective view of an exemplary embodiment of a swirler constructed in accordance with the present disclosure, showing an inlet end and first swirl chamber of the swirler;

    Fig. 2 is a perspective view of the swirler of Fig. 1, showing an outlet end and second swirl chamber of the swirler;

    Fig. 3A is a schematic cross-sectional view of a nozzle including the swirler of Fig. 1, showing one arrangement of the swirler in the nozzle;

    Fig. 3B is an inlet end view of the swirler of Fig. 1, schematically indicating the cross-sectional shape of the flow path through the feed channel; and

    Fig. 4 is an exploded perspective view of a cap with a swirler of Fig. 1, showing the swirl chamber insert of the cap.


    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS



    [0015] Reference will now be made to the drawings wherein like reference numerals identify similar structural features or aspects of the subject disclosure. For purposes of explanation and illustration, and not limitation, a partial view of an exemplary embodiment of a swirler in accordance with the disclosure is shown in Fig. 1 and is designated generally by reference character 10. Other embodiments of the swirler in accordance with the disclosure, or aspects thereof, are provided in Figs. 2-4, as will be described. The systems and methods described herein can be used for fluid swirling equipment, such as in spray dry facilities for example.

    [0016] A swirler 10 for swirling fluid in a nozzle 100 (shown in Fig. 3) includes a swirler body 12. Swirler body 12 defines an inlet end 14, an outlet end 16 opposed to inlet end 14, and a circumferential periphery 18. Circumferential periphery 18 extends axially from inlet end 14 to outlet end 16. Outlet end 16 defines a first swirl chamber 20 and inlet end 14 defines a second swirl chamber 22 (shown in Fig. 2).

    [0017] Swirler 10 has a feed channel 24 defined in circumferential periphery 18. Feed channel 24 extends from inlet end 14 to outlet end 16 of swirler body 10. First swirl chamber 20 is in fluid communication with feed channel 24 for supplying fluid from feed channel 24 to be swirled in first swirl chamber 20 through tangential swirl slot 26 for imparting swirl on fluid fed into first swirl chamber 20. Tangential swirl slot 26 includes a metering orifice 28 for metering flow into first swirl chamber 20.

    [0018] Swirler 10 includes first tangential swirl slot 26 defined in outlet end 16 of swirler body 12 placing feed channel 24 in fluid communication with first swirl chamber 20. First tangential swirl slot 26 also imparts swirl on fluid fed into first swirl chamber 20. Swirler 10 also includes second tangential swirl slot 30 defined in inlet end 14 of swirler body 12 placing feed channel 24 in fluid communication with second swirl chamber 22 and for imparting swirl on fluid fed into second swirl chamber 22 by way of a second tangential swirl slot 30 defined in inlet end 14 of swirler body 12. Second tangential swirl slot 30 also imparts swirl on fluid fed into second swirl chamber 22. Tangential swirl slot 26 includes a metering orifice 32 for metering flow into first swirl chamber 20. Tangential swirl slot 26 is angled to provide clockwise swirl in 20 and tangential swirl slot 30 is angled to provide counter clockwise swirl in second swirl chamber 22.

    [0019] With reference now to Fig. 3A, spray nozzle 100 includes a nozzle body 102 with an interior bore 104. Spray nozzle 100 is similar in construction to that described in U.S. Patent No. 7,611,079. Interior bore 104 extends from an inlet 106 to an opposed outlet 108 and has an interior locating surface 110 defined within interior bore 104. Swirler 10, as described above, is disposed within interior bore 104 and is engaged with locating surface 110 such that first swirl chamber 20 is positioned proximate outlet 108 of nozzle body 102. An orifice disc 112 is disposed within the interior bore 104 between swirler 10 and outlet 108 of nozzle body 102. Orifice disc 112 defines an orifice 114 therethrough in fluid communication with swirl chamber 20 and outlet 108 of nozzle body 102 for issuing a swirling spray from nozzle body outlet 108.

    [0020] A locking member 116 engages within interior bore 104 for locking swirler 10 and orifice disc 112 within interior bore 104. Locking member 116 defines a flow passage from inlet 106 of nozzle body 102 to feed channel 24 of swirl element 10.

    [0021] Referring now to Fig. 3B, feed channel 24 is defined in circumferential periphery 18 along a segment extending between inlet end 14 to outlet end 16 of swirler body 12. Feed channel 24 defines a channel surface 34 with an arcuate cross-section. As indicated schematically in Fig. 3B, a portion of circular shaped interior bore 104 and a surface 34 of swirler body 12 forming feed channel 24, defining a flow passage with a biconvex lens shaped cross-section.

    [0022] With reference again to Fig. 3A, a cap 50 shown in Fig. 4, is disposed within interior bore 104 and engaged with inlet end 14 of swirler body 12 for closing off second swirl chamber 22. Cap 50 includes a swirl chamber insert 52 for mating engagement with second swirl chamber 22 to close off second swirl chamber 22 and defines a lunate cutout corresponding to the feed channel cross-section. As will be appreciated by those skilled in the art, a similar cap can be configured for engagement with first swirl chamber 20. A spray nozzle kit includes one or both caps.

    [0023] The systems and methods disclosed herein can be used for existing nozzle installations, simplifying the upgrade process by reusing an existing nozzle body and orifice disk. By including swirl chambers on each end of the swirler, life of a single swirler can be doubled. Moreover, since a single swirler having two swirl chambers can be manufactured more cheaply than a two swirlers each with single swirl chambers, cost of the swirler is lower on a per swirler chamber basis. Numbers of swirlers warehoused as spares can also be correspondingly reduced.

    [0024] The methods and systems of the present disclosure, as described above and shown in the drawings, provide for swirlers with superior properties including increased usable life compared to traditional configurations. While the apparatus and methods of the subject disclosure have been shown and described with reference to preferred embodiments, those skilled in the art will readily appreciate that changes and/or modifications may be made thereto without departing from the scope of the subject disclosure. The scope of the invention is defined by the claims.


    Claims

    1. A swirler assembly for swirling fluid in a nozzle (100) comprising:
    a swirler (10) comprising a swirler body (12) defining:

    an inlet end (14);

    an outlet end (16) opposed to the inlet end; and

    a circumferential periphery (18) extending axially from the inlet end to the outlet end,

    wherein the outlet end defines a first swirl chamber (20), and the inlet end defines a second swirl chamber (22); characterized by

    a cap (50) engaged with the inlet end of the swirler body for closing off the second swirl chamber, wherein the cap includes a swirl chamber insert (52) for mating engagement with the second swirl chamber to close off the second swirl chamber.


     
    2. A swirler assembly as recited in claim 1, further comprising a feed channel (24) defined in the circumferential periphery from the inlet end to the outlet end of the swirler body.
     
    3. A swirler assembly as recited in claim 2, wherein the first swirl chamber is in fluid communication with the feed channel for supplying fluid from the feed channel to be swirled in the first swirl chamber.
     
    4. A swirler assembly as recited in claim 3, further comprising a tangential swirl slot (26) defined in the outlet end of the swirler body placing the feed channel in fluid communication with the first swirl chamber and for imparting swirl on fluid fed into the first swirl chamber.
     
    5. A swirler assembly as recited in claim 4, wherein the tangential swirl slot includes a metering orifice (28) for metering flow into the first swirl chamber.
     
    6. A swirler assembly as recited in any of claims 2 to 5, wherein the first and second swirl chambers are both in fluid communication with the feed channel for supplying fluid from the feed channel to be swirled in at least one of the swirl chambers.
     
    7. A swirler assembly as recited in claim 6, further comprising:
    a second tangential swirl slot (30) defined in the inlet end of the swirler body placing the feed channel in fluid communication with the second swirl chamber and for imparting swirl on fluid fed into the second swirl chamber.
     
    8. A swirler assembly as recited in claim 7, wherein each tangential swirl slot includes a metering orifice (28, 32) for metering flow therethrough, and/or
    wherein the tangential swirl slots are angled to provide counter-clockwise swirl in one of the first and second swirl chambers and clockwise swirl in the other of the first and second swirl chambers.
     
    9. A swirler assembly as recited in any of claims 2 to 8, wherein the cap defines a lunate cutout corresponding to a cross-section of the feed channel.
     
    10. A spray nozzle (100) comprising:

    a nozzle body (102) defining an interior bore (104) extending from an inlet (106) to an opposed outlet (108), with an interior locating surface (110) defined in the interior bore;

    a swirler assembly as recited in any preceding claim disposed within the interior bore engaged with the locating surface with the first swirl chamber positioned proximate the outlet of the nozzle body; and

    an orifice disc (112) disposed within the interior bore between the swirler and the outlet of the nozzle body, wherein the orifice disc defines an orifice (114) therethrough in fluid communication with the swirl chamber and the outlet of the nozzle body for issuing a swirling spray from the nozzle body outlet.


     
    11. A spray nozzle as recited in claim 10, further comprising a locking member (116) engaged within the interior bore for locking the swirl element and orifice disc within the interior bore, the locking member defining a flow passage from the inlet of the nozzle body to the channel of the swirl element.
     
    12. A spray nozzle as recited in claim 10 or 11 when dependent on claim 2, wherein the feed channel defines a channel surface (34) with an arcuate cross-section, wherein the interior bore is circular, and wherein the channel surface and the interior bore define a flow passage with a biconvex lens shaped cross-section.
     
    13. A kit comprising:
    a spray nozzle (100) including:

    a nozzle body (102) defining an interior bore (104) extending from an inlet (106) to an opposed outlet (108), with an interior locating surface (110) defined in the interior bore;

    a swirler assembly as recited in any of claims 1 to 9 configured to be disposed within the interior bore engaged with the locating surface with the first swirl chamber positioned proximate the outlet of the nozzle body;

    an orifice disc (112) configured to be disposed within the interior bore between the swirler and the outlet of the nozzle body, wherein the orifice disc defines an orifice (114) therethrough for fluid communication with the swirl chamber and the outlet of the nozzle body for issuing a swirling spray from the nozzle body outlet; and

    the cap (50) configured to be disposed within the interior bore.


     
    14. A kit as recited in claim 13, wherein the kit also includes a second cap (50) configured to be disposed within the interior bore and engaged with the outlet end (16) of the swirler body (10) for closing off the first swirl chamber (20) when the second swirl chamber (22) is in use.
     
    15. A kit as recited in claim 13 or 14, wherein the second cap (50) includes a swirl chamber insert (52) for mating engagement with the first swirl chamber (20) to close off the first swirl chamber.
     


    Ansprüche

    1. Verwirbleranordnung zum Verwirbeln eines Fluids in einer Düse (100), umfassend:
    einen Verwirbler (10), der einen Verwirblerkörper (12) umfasst und Folgendes definiert:

    ein Einlassende (14);

    ein Auslassende (16), das dem Einlassende gegenüberliegt; und

    einen Umfangsrand (18), der sich axial von dem Einlassende zum Auslassende erstreckt,

    wobei das Auslassende eine erste Wirbelkammer (20) definiert und das Einlassende eine zweite Wirbelkammer (22) definiert;

    gekennzeichnet durch

    einen Deckel (50), der mit dem Einlassende des Verwirblerkörpers im Eingriff steht, um die zweite Wirbelkammer zu verschließen,

    wobei der Deckel einen Wirbelkammereinsatz (52) zum passenden Eingriff mit der zweiten Wirbelkammer, um die zweite Wirbelkammer zu verschließen, beinhaltet.


     
    2. Verwirbleranordnung nach Anspruch 1, ferner umfassend einen Zuführkanal (24), der in dem Umfangsrand von dem Einlassende zum Auslassende des Verwirblerkörpers definiert ist.
     
    3. Verwirbleranordnung nach Anspruch 2, wobei die erste Wirbelkammer in Fluidverbindung mit dem Zuführkanal zum Bereitstellen von Fluid von dem Zuführkanal, das in der ersten Wirbelkammer verwirbelt werden soll, steht.
     
    4. Verwirbleranordnung nach Anspruch 3, ferner umfassend einen tangentialen Wirbelspalt (26), der in dem Auslassende des Verwirblerkörpers definiert ist und der den Zuführkanal in Fluidverbindung mit der ersten Wirbelkammer anordnet und zum Verwirbeln eines Fluids, das in die Wirbelkammer zugeführt wird.
     
    5. Verwirbleranordnung nach Anspruch 4, wobei der tangentiale Wirbelspalt eine Messöffnung (28) zum Messen des Stroms in die erste Wirbelkammer beinhaltet.
     
    6. Verwirbleranordnung nach einem der Ansprüche 2 bis 5, wobei die erste und die zweite Wirbelkammer beide in Fluidverbindung mit dem Zuführkanal zum Bereitstellen von Fluid aus dem Zuführkanal, das in mindestens einer der Wirbelkammern verwirbelt werden soll, stehen.
     
    7. Verwirbleranordnung nach Anspruch 6, ferner umfassend:
    einen zweiten tangentialen Wirbelspalt (30), der in dem Einlassende des Verwirblerkörpers definiert ist und der den Zuführkanal in Fluidverbindung mit der zweiten Wirbelkammer anordnet und zum Verwirbeln von Fluid, das in die zweite Wirbelkammer zugeführt wird.
     
    8. Verwirbleranordnung nach Anspruch 7, wobei jeder tangentiale Wirbelspalt eine Messöffnung (28, 32) zum Messen des Stroms dadurch beinhaltet und/oder
    wobei die tangentialen Wirbelspalte abgewinkelt sind, um einen Wirbel gegen den Uhrzeigersinn in einer aus der ersten und der zweiten Wirbelkammer und einen Wirbel im Uhrzeigersinn in der anderen aus der ersten und der zweiten Wirbelkammer bereitzustellen.
     
    9. Verwirbleranordnung nach einem der Ansprüche 2 bis 8, wobei der Deckel einen sichelförmigen Ausschnitt definiert, der einem Querschnitt des Zuführkanals entspricht.
     
    10. Sprühdüse (100), umfassend:

    einen Düsenkörper (102), der eine Innenbohrung (104) definiert, die sich von einem Einlass (106) zu einem gegenüberliegenden Auslass (108) erstreckt, wobei eine innere Positionierfläche (110) in der Innenbohrung definiert ist;

    eine Verwirbleranordnung nach einem der vorstehenden Ansprüche, die innerhalb der Innenbohrung angeordnet ist und mit der Positionierfläche in Eingriff steht, wobei die erste Wirbelkammer nahe dem Auslass des Düsenkörpers angeordnet ist; und

    eine Lochscheibe (112), die innerhalb der Innenbohrung zwischen dem Verwirbler und dem Auslass des Düsenkörpers angeordnet ist, wobei die Lochscheibe eine Öffnung (114) dadurch in Fluidverbindung mit der Wirbelkammer und dem Auslass des Düsenkörpers zum Ausgeben eines wirbelnden Sprühregens aus dem Düsenkörperauslass definiert.


     
    11. Sprühdüse nach Anspruch 10, ferner umfassend ein Verriegelungselement (116), das innerhalb der Innenbohrung zum Verriegeln des Wirbelelements und der Lochscheibe innerhalb der Innenbohrung in Eingriff steht, wobei das Verriegelungselement einen Strömungskanal von dem Einlass des Düsenkörpers zu dem Kanal des Wirbelelements definiert.
     
    12. Sprühdüse nach Anspruch 10 oder 11, wenn abhängig von Anspruch 2, wobei der Zuführkanal eine Kanalfläche (34) mit einem bogenförmigen Querschnitt definiert, wobei die Innenbohrung kreisförmig ist, und wobei die Kanalfläche und die Innenbohrung einen Strömungskanal mit einem Querschnitt in Form einer bikonvexen Linse definieren.
     
    13. Set, umfassend:
    eine Sprühdüse (100), die Folgendes beinhaltet:

    einen Düsenkörper (102), der eine Innenbohrung (104) definiert, die sich von einem Einlass (106) zu einem gegenüberliegenden Auslass (108) erstreckt, wobei eine innere Positionierfläche (110) in der Innenbohrung definiert ist;

    eine Verwirbleranordnung nach einem der Ansprüche 1 bis 9, die dazu konfiguriert ist, dass sie innerhalb der Innenbohrung angeordnet ist und mit der Positionierfläche in Eingriff steht, wobei die erste Wirbelkammer nahe dem Auslass des Düsenkörpers angeordnet ist;

    eine Lochscheibe (112), die dazu konfiguriert ist, dass sie innerhalb der Innenbohrung zwischen dem Verwirbler und dem Auslass des Düsenkörpers angeordnet ist, wobei die Lochscheibe eine Öffnung (114) dadurch zur Fluidverbindung mit der Wirbelkammer und dem Auslass des Düsenkörpers zum Ausgeben eines wirbelnden Sprühregens aus dem Düsenkörperauslass definiert ist; und

    den Deckel (50), der dazu konfiguriert ist, dass er innerhalb der Innenbohrung angeordnet ist.


     
    14. Set nach Anspruch 13, wobei das Set außerdem einen zweiten Deckel (50) beinhaltet, der dazu konfiguriert ist, dass er innerhalb der Innenbohrung angeordnet ist und mit dem Auslassende (16) des Verwirblerkörpers (10) zum Verschließen der ersten Wirbelkammer (20), wenn die zweite Wirbelkammer (22) in Betrieb ist, in Eingriff steht.
     
    15. Set nach Anspruch 13 oder 14, wobei der zweite Deckel (50) einen Wirbelkammereinsatz (52) zum passenden Eingriff mit der ersten Wirbelkammer (20), um die erste Wirbelkammer zu verschließen, beinhaltet.
     


    Revendications

    1. Ensemble tourbillonneur pour faire tourbillonner un fluide dans une buse (100) comprenant :
    un tourbillonneur (10) comprenant un corps de tourbillonneur (12) définissant :

    une extrémité d'entrée (14) ;

    une extrémité de sortie (16) opposée à l'extrémité d'entrée ; et

    une périphérie circonférentielle (18) s'étendant axialement de l'extrémité d'entrée à l'extrémité de sortie,

    dans lequel l'extrémité de sortie définit une première chambre de tourbillonnement (20), et l'extrémité d'entrée définit une seconde chambre de tourbillonnement (22) ; caractérisé par

    un capuchon (50) en prise avec l'extrémité d'entrée du corps de tourbillonnement pour fermer la seconde chambre de tourbillonnement, dans lequel le capuchon comprend un insert de chambre de tourbillonnement (52) pour une prise d'accouplement avec la seconde chambre de tourbillonnement pour fermer la seconde chambre de tourbillonnement.


     
    2. Ensemble tourbillonneur selon la revendication 1, comprenant en outre un canal d'alimentation (24) défini dans la périphérie circonférentielle de l'extrémité d'entrée à l'extrémité de sortie du corps de tourbillonneur.
     
    3. Ensemble tourbillonneur selon la revendication 2, dans lequel la première chambre de tourbillonnement est en communication fluidique avec le canal d'alimentation pour fournir du fluide à partir du canal d'alimentation à faire tourbillonner dans la première chambre de tourbillonnement.
     
    4. Ensemble tourbillonneur selon la revendication 3, comprenant en outre une fente de tourbillonnement tangentiel (26) définie dans l'extrémité de sortie du corps de tourbillonneur plaçant le canal d'alimentation en communication fluidique avec la première chambre de tourbillonnement et pour exercer un tourbillonnement sur le fluide introduit dans la première chambre de tourbillonnement.
     
    5. Ensemble tourbillonneur selon la revendication 4, dans lequel la fente de tourbillonnement tangentiel comprend un orifice de dosage (28) pour doser l'écoulement dans la première chambre de tourbillonnement.
     
    6. Ensemble tourbillonneur selon l'une quelconque des revendications 2 à 5, dans lequel les première et seconde chambres de tourbillonnement sont toutes deux en communication fluidique avec le canal d'alimentation pour fournir du fluide à partir du canal d'alimentation à faire tourbillonner dans au moins l'une des chambres de tourbillonnement.
     
    7. Ensemble tourbillonneur selon la revendication 6, comprenant en outre :
    une seconde fente de tourbillonnement tangentiel (30) définie dans l'extrémité d'entrée du corps de tourbillonneur plaçant le canal d'alimentation en communication fluidique avec la seconde chambre de tourbillonnement et pour exercer un tourbillonnement sur le fluide introduit dans la seconde chambre de tourbillonnement.
     
    8. Ensemble tourbillonneur selon la revendication 7, dans lequel chaque fente de tourbillonnement tangentiel comprend un orifice de dosage (28, 32) pour doser l'écoulement à travers celui-ci, et/ou
    dans lequel les fentes de tourbillonnement tangentiel sont inclinées pour fournir un tourbillonnement dans le sens antihoraire dans l'une des première et seconde chambres de tourbillonnement et un tourbillonnement dans le sens horaire dans l'autre des première et seconde chambres de tourbillonnement.
     
    9. Ensemble tourbillonneur selon l'une quelconque des revendications 2 à 8, dans lequel le capuchon définit une découpe en forme de croissant correspondant à une section transversale du canal d'alimentation.
     
    10. Buse de pulvérisation (100) comprenant :

    un corps de buse (102) définissant un alésage intérieur (104) s'étendant d'une entrée (106) à une sortie opposée (108), avec une surface de localisation intérieure (110) définie dans l'alésage intérieur ;

    un ensemble tourbillonneur selon une quelconque revendication précédente, disposé à l'intérieur de l'alésage intérieur en prise avec la surface de localisation avec la première chambre de tourbillonnement positionnée à proximité de la sortie du corps de buse ; et

    un diaphragme (112) disposé à l'intérieur de l'alésage intérieur entre le tourbillonneur et la sortie du corps de buse, dans lequel le diaphragme définit un orifice (114) à travers celui-ci en communication fluidique avec la chambre de tourbillonnement et la sortie du corps de buse pour délivrer une pulvérisation tourbillonnante à partir de la sortie de corps de buse.


     
    11. Buse de pulvérisation selon la revendication 10, comprenant en outre un élément de verrouillage (116) en prise à l'intérieur de l'alésage intérieur pour verrouiller l'élément de tourbillonnement et le diaphragme à l'intérieur de l'alésage intérieur, l'élément de verrouillage définissant un passage d'écoulement de l'entrée du corps de buse au canal de l'élément de tourbillonnement.
     
    12. Buse de pulvérisation selon la revendication 10 ou 11 lorsqu'elle dépend de la revendication 2, dans laquelle le canal d'alimentation définit une surface de canal (34) avec une section transversale arquée, dans lequel l'alésage intérieur est circulaire, et dans lequel la surface de canal et l'alésage intérieur définissent un passage d'écoulement avec une section transversale en forme de lentille biconvexe.
     
    13. Kit comprenant :
    une buse de pulvérisation (100) comprenant :

    un corps de buse (102) définissant un alésage intérieur (104) s'étendant d'une entrée (106) à une sortie opposée (108), avec une surface de localisation intérieure (110) définie dans l'alésage intérieur ;

    un ensemble tourbillonneur selon l'une quelconque des revendications 1 à 9 conçu pour être disposé à l'intérieur de l'alésage intérieur en prise avec la surface de localisation avec la première chambre de tourbillonnement positionnée à proximité de la sortie du corps de buse ;

    un diaphragme (112) conçu pour être disposé à l'intérieur de l'alésage intérieur entre le tourbillonneur et la sortie du corps de buse, dans lequel le diaphragme définit un orifice (114) à travers celui-ci pour une communication fluidique avec la chambre de tourbillonnement et la sortie du corps de buse pour délivrer une pulvérisation tourbillonnante à partir de la sortie de corps de buse ; et

    le capuchon (50) conçu pour être disposé à l'intérieur de l'alésage intérieur.


     
    14. Kit selon la revendication 13, dans lequel le kit comprend également un second capuchon (50) conçu pour être disposé à l'intérieur de l'alésage intérieur et en prise avec l'extrémité de sortie (16) du corps de tourbillonneur (10) pour fermer la première chambre de tourbillonnement (20) lorsque la seconde chambre de tourbillonnement (22) est utilisée.
     
    15. Kit selon la revendication 13 ou 14, dans lequel le second capuchon (50) comprend un insert de chambre de tourbillonnement (52) pour une prise d'accouplement avec la première chambre de tourbillonnement (20) pour fermer la première chambre de tourbillonnement.
     




    Drawing












    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description