EP1365864B1 - Buse de pulverisation a canaux profiles - Google Patents
Buse de pulverisation a canaux profiles Download PDFInfo
- Publication number
- EP1365864B1 EP1365864B1 EP02701496A EP02701496A EP1365864B1 EP 1365864 B1 EP1365864 B1 EP 1365864B1 EP 02701496 A EP02701496 A EP 02701496A EP 02701496 A EP02701496 A EP 02701496A EP 1365864 B1 EP1365864 B1 EP 1365864B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl chamber
- coaxial
- spraying nozzle
- liquid
- channel
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
Definitions
- the present invention relates to spray nozzles liquids, into which a spray liquid is fed into a central vortex chamber through peripheral transfer tangentially injecting the liquid which swirls in the central swirl chamber and exits then from the central swirl chamber through a passage coaxial output to the atmosphere.
- Such spray nozzles are likely to be used in sprayers, in combination with pumps spraying with manual actuation or with a pushing gas, especially for spraying cosmetic products.
- spray nozzles comprising a chamber of whirling having a general form of revolution around a longitudinal axis, bounded by a peripheral wall; by one rear wall, and by a front wall pierced with a hole coaxial output.
- a coaxial circular channel surrounds the chamber swirl, and communicates with said swirling by a plurality of first transfer channels oblique devices that inject the rotating liquid into a direction of rotation in the swirl chamber.
- a plurality second transfer channels conduct the liquid from a liquid inlet and inject it into the coaxial circular channel rotating in said direction of rotation.
- the first channels of transfer are each limited by an external profile face straight which connects tangentially to the peripheral wall of the swirl chamber, and which connects angularly to the inner wall of the coaxial circular channel.
- Said first transfer channels are each limited by an inner face to straight profile and angularly connected to the wall peripheral of the swirl chamber and which connects angularly to the inner wall of the coaxial circular channel.
- the cross section of the first transfer channels is reduced gradually from the coaxial circular channel to the chamber of whirling.
- Such spray nozzles work properly for spraying low viscosity liquids such as water, producing droplets of satisfactory size, around 90 microns.
- the problem proposed by the present invention is to reduce the size of the spray droplets leaving a nozzle supplied with medium viscosity liquid or supplied with gel.
- the invention results from the observation that a reduction of the droplet sizes sprayed at the outlet of the nozzle can be obtained by promoting the acceleration of the fluid towards the peripheral wall of the swirl chamber, and avoiding as much as possible dead zones at low speed of the liquid in the channels or chambers of the spray nozzle.
- the average droplet diameter can be between about 95 microns and about 65 microns.
- a side effect of this particular structure of nozzle according to the invention is an acceptance of more tolerances high concentricity of the outlet hole with respect to the camber swirling when spraying relatively liquids viscous: spraying is excellent when the output is centered, but remains acceptable when the output is slightly off center. Good results can be obtained up to an offset offset of about 80 microns, for liquids with viscosities between 800 and 1,000 mPa.s.
- the inner face to concave profile of first transfer channel is usually circular according to a radius between one and a half and two times times the radial distance DR between the coaxial circular channel and the swirl chamber. This reduces the presence of zones dead, i.e. areas in which the liquid takes a low speed in the spray nozzle, and spraying is improved.
- the inner face to concave profile of first transfer channel connects to the wall inner coaxial circular channel by a rounded area convex. This feature also reduces the presence of dead zones, and improves spraying.
- the invention provides a. liquid sprayer, which includes a spray nozzle as defined above.
- Such a sprayer has advantages in particular when it contains a liquid to be sprayed whose viscosity is between approximately 800 and 1000 mPa.s, and whose density is between approximately 1000 and 1100 kg / m 3 .
- a spray nozzle according to the invention comprises a nozzle body 1 comprising a cylindrical housing 2 open towards the rear and closed forwards by an anterior wall 3.
- a core 4 generally cylindrical with full front 5 is engaged coaxially in the cylindrical housing 2 of the nozzle body 1, coming to bear on the rear face 6 of the front wall 3.
- Housing and grooves are provided on the face posterior 6 of the anterior wall 3, to form the chambers and spray nozzle channels according to the invention.
- a swirl chamber 7 having a general shape of revolution around the longitudinal axis I-I, limited by a peripheral wall 8, by a rear wall formed by the core 4, and by a front wall 9 pierced with a coaxial outlet hole 10.
- the spray nozzle includes at least one channel coaxial circular 11 placed around the swirl 7 and communicating with said swirl 7 by a plurality of first channels of oblique transfers such as channels 12, 13, 14 and 15.
- the first transfer channels 12-15 tangentially inject the liquid in the swirl chamber 7 by printing a rotation around the axis I-I, for example in the direction of rotation clockwise in Figure 2.
- a plurality of second transfer channels such as channels 16, 17, 18 and 19 conduct the liquid from an inlet of liquid 20 and inject it tangentially into the circular channel coaxial 11.
- the liquid In the coaxial circular channel 11, the liquid is in rotation in the same direction of rotation as in the swirl 7, i.e. clockwise shown in the example in Figure 2.
- the first transfer channels 12-15 are distributed evenly around the swirl chamber 7 and have the same shape, so that the spray nozzle has symmetry around the longitudinal axis I-I. We will describe therefore the shape of only one of the first transfer channels. This shape is as shown to scale in Figures 2 and 4, to which we can refer for more details.
- the first transfer channel 14 is limited by an outer face 21 and by an inner face 22 : the outer face 21 is the face furthest from the axis longitudinal I-I, while the inner face 22 is the face the closer to the longitudinal axis I-I.
- the outer face 21 has a generally straight profile and is connected tangentially along the connection zone 23 to the wall peripheral 8 of the swirl chamber 7.
- the inner face 22 of the first transfer channel 14 has an L1 concave profile over most of its length.
- the inner face 22 with concave profile L1 can be generally circular according to a radius advantageously included between one and a half and two times the radial distance DR between the coaxial circular channel 11 and the swirl chamber 7.
- the inner face 22 with concave profile L1 of the first channel transfer can be connected to the inner wall 35 of the channel coaxial circular 11 by a convex rounded area 24.
- the outer face 21 with a generally rectilinear profile of the first transfer channel 14 can be connected to the wall interior 35 of the coaxial circular channel 11 by a rounded area convex 25.
- the inner face 22 of concave profile L1 of first transfer channel 14 can be connected to the wall peripheral 8 of swirl chamber 7 by a zone of connection 26 rounded convex with small radius.
- the radius of curvature of the convex connection zone 26 can be understood between about 50 microns and 80 microns.
- the coaxial outlet hole 10 can advantageously be centered on the longitudinal axis I-I with a tolerance of less than Approximately 80 microns, preferably less than 60 microns.
- the exit coaxial hole 10 can be aligned with the longitudinal axis I-I with a deviation tolerance less than 4 ° approximately.
- the cross section of the first transfer channels 12-15 can advantageously be reduced gradually from coaxial circular channel 11 towards the swirl chamber 7.
- Their anterior (in the anterior wall 3) and posterior faces (anterior face 5 of the core 4) can advantageously be to make it easier to manufacture.
- the nozzle structure thus defined promotes acceleration fluid inside the channels and in the swirling, thus producing at the outlet of the nozzle a spraying with particularly fine droplets, the size of which is about 30% lower than the droplets obtained by known spray nozzles.
- a liquid sprayer 27 comprises a container 28, a pump 29 and a spray nozzle 30 as defined previously.
- the pump is activated 29 which sucks the liquid 32 from the container 28 through a dip tube 33 and injects it under pressure into the spray nozzle 30 which produces, at the outlet, a spray cone 34.
- the particular structure of the spray nozzle 30 according to the invention allows the correct operation of such a sprayer 27 containing a liquid 32 to be sprayed, the viscosity of which may be greater than that of water, which may be between 800 and 1000 mPa .s approximately, and whose density is between 1000 and 1.100 kg / m 3 approximately.
Landscapes
- Nozzles (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
- une chambre de tourbillonnement ayant une forme générale de révolution autour d'un axe longitudinal, limitée par une paroi périphérique, par une paroi postérieure, et par une paroi frontale percée d'un trou coaxial de sortie,
- au moins un canal circulaire coaxial agencé autour de la chambre de tourbillonnement et communiquant avec ladite chambre de tourbillonnement par une pluralité de premiers canaux de transfert obliques injectant le liquide en rotation dans un sens de rotation dans la chambre de tourbillonnement,
- une pluralité de seconds canaux de transfert pour conduire le liquide depuis une entrée de liquide et l'injecter dans le canal circulaire coaxial en rotation selon ledit sens de rotation,
- les premiers canaux de transfert sont limités chacun par une face extérieure à profil généralement rectiligne et se raccordant tangentiellement à la paroi périphérique de la chambre de tourbillonnement,
- les premiers canaux de transfert sont limités chacun par une face intérieure ayant un profil concave sur la plus grande partie de sa longueur.
- la figure 1 est une vue de côté globale en coupe longitudinale d'une buse de pulvérisation selon un mode de réalisation particulier de l'invention ;
- la figure 2 est une coupe transversale à plus grande échelle selon le plan A-A de la figure 1 ;
- la figure 3 est une vue à plus grande échelle de la zone antérieure de la buse de pulvérisation de figure 1, en coupe selon la surface C-C de la figure 2 ;
- la figure 4 est une vue partielle de la figure 2, montrant à plus grande échelle la courbure des faces de canaux ; et
- la figure 5 est une vue schématique générale d'un pulvérisateur selon l'invention.
- diamètre de chambre de tourbillonnement : 1 mm environ ;
- longueur de chambre de tourbillonnement : 0,19 mm environ ;
- diamètre intérieur du canal circulaire : 2,4 mm environ ;
- diamètre extérieur du canal circulaire : 3 mm environ.
Claims (11)
- Buse de pulvérisation pour la pulvérisation de liquides, comprenant :une chambre de tourbillonnement (7) ayant une forme générale de révolution autour d'un axe longitudinal (I-I), limitée par une paroi périphérique (8), par une paroi postérieure (4), et par une paroi frontale (9) percée d'un trou coaxial dé sortie (10),au moins un canal circulaire coaxial (11) agencé autour de la chambre de tourbillonnement (7) et communiquant avec ladite chambre de tourbillonnement (7) par une pluralité de premiers canaux de transfert (12-15) obliques injectant le liquide en rotation dans un sens de rotation dans la chambre de tourbillonnement (7),une pluralité de seconds canaux de transfert (16-19) pour conduire le liquide depuis une entrée de liquide (20) et l'injecter dans le canal circulaire coaxial (11) en rotation selon ledit sens de rotation,les premiers canaux de transfert (12-15) sont limités chacun par une face extérieure (21) à profil généralement rectiligne et se raccordant tangentiellement à la paroi périphérique (8) de la chambre de tourbillonnement (7),les premiers canaux de transfert (12-15) sont limités chacun par une face intérieure (22) ayant un profil concave (L1) sur la plus grande partie de sa longueur.
- Buse de pulvérisation selon la revendication 1, caractérisée en ce que la face intérieure (22) à profil concave (L1) de premier canal de transfert (12-15) est généralement circulaire selon un rayon compris entre une fois et demie et deux fois la distance radiale (DR) entre le canal circulaire coaxial (11) et la chambre de tourbillonnement (7).
- Buse de pulvérisation selon l'une des revendications 1 ou 2, caractérisée en ce que la face intérieure (22) à profil concave (L1) de premier canal de transfert (12-15) se raccorde à la paroi intérieure (35) de canal circulaire coaxial (11) par une zone arrondie convexe (24).
- Buse de pulvérisation selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la face extérieure (21) à profil généralement rectiligne de premier canal de transfert (12-15) se raccorde à la paroi intérieure (35) de canal circulaire coaxial (11) par une zone arrondie convexe (25).
- Buse de pulvérisation selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la face intérieure (22) à profil concave (L1) de premier canal de transfert (12-15) se raccorde à la paroi périphérique (8) de chambre de tourbillonnement (7) par une zone de raccordement (26) arrondie convexe.
- Buse de pulvérisation selon la revendication 5, caractérisée en ce que le rayon de courbure de la zone de raccordement (26) convexe est compris entre 50 microns et 80 microns environ.
- Buse de pulvérisation selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le trou coaxial de sortie (10) est centré sur l'axe longitudinal (I-I) selon une tolérance inférieure à 80 microns environ, de préférence inférieure à 60 microns.
- Buse de pulvérisation selon la revendication 7, caractérisée en ce que le trou coaxial de sortie (10) est aligné sur l'axe longitudinal (I-I) avec une tolérance de déviation inférieure à 4° environ.
- Pulvérisateur de liquide (27), comprenant une buse de pulvérisation (30) selon l'une quelconque des revendications 1 à 8.
- Pulvérisateur (27) selon la revendication 9, caractérisé en ce qu'il contient un liquide (32) à pulvériser dont la viscosité est comprise entre 800 et 1 000 mPa.s environ, et dont la densité est comprise entre 1 000 et 1 100 kg/m3 environ.
- Pulvérisateur (27) selon l'une des revendications 9 ou 10, caractérisé en ce qu'il contient un liquide thixotrope.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0103129A FR2821573B1 (fr) | 2001-03-05 | 2001-03-05 | Buse de pulverisation a canaux profiles |
FR0103129 | 2001-03-05 | ||
PCT/IB2002/000658 WO2002070141A1 (fr) | 2001-03-05 | 2002-03-04 | Buse de pulverisation a canaux profiles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1365864A1 EP1365864A1 (fr) | 2003-12-03 |
EP1365864B1 true EP1365864B1 (fr) | 2004-10-20 |
Family
ID=8860863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02701496A Expired - Lifetime EP1365864B1 (fr) | 2001-03-05 | 2002-03-04 | Buse de pulverisation a canaux profiles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1365864B1 (fr) |
AT (1) | ATE279988T1 (fr) |
DE (1) | DE60201663D1 (fr) |
FR (1) | FR2821573B1 (fr) |
WO (1) | WO2002070141A1 (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2858568B1 (fr) * | 2003-08-08 | 2006-09-15 | Valois Sas | Tete de pulverisation de produit liquide |
MX2008011252A (es) * | 2006-03-07 | 2008-09-10 | Boehringer Ingelheim Int | Tobera de remolino. |
FR2904573B1 (fr) * | 2006-08-04 | 2008-12-05 | Rexam Dispensing Systems Sas | Buse de pulverisation, organe de distribution comprenant une telle buse, distributeur comprenant un tel organe de distribution et utilisation d'une telle buse. |
EP2077132A1 (fr) | 2008-01-02 | 2009-07-08 | Boehringer Ingelheim Pharma GmbH & Co. KG | Dispositif distributeur, dispositif de stockage et procédé pour la distribution d'une formulation |
JP5670421B2 (ja) | 2009-03-31 | 2015-02-18 | ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | コンポーネント表面のコーティング方法 |
WO2010133294A2 (fr) | 2009-05-18 | 2010-11-25 | Boehringer Ingelheim International Gmbh | Adapteur, dispositif d'inhalation et nébuliseur |
UA107097C2 (en) | 2009-11-25 | 2014-11-25 | Бьорінгер Інгельхайм Інтернаціональ Гмбх | Dispenser |
JP5658268B2 (ja) | 2009-11-25 | 2015-01-21 | ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | ネブライザ |
US10016568B2 (en) | 2009-11-25 | 2018-07-10 | Boehringer Ingelheim International Gmbh | Nebulizer |
JP5874724B2 (ja) | 2010-06-24 | 2016-03-02 | ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | ネブライザ |
WO2012130757A1 (fr) | 2011-04-01 | 2012-10-04 | Boehringer Ingelheim International Gmbh | Appareil médical pourvu d'un récipient |
US11154876B2 (en) | 2011-04-19 | 2021-10-26 | Dlhbowles, Inc. | Multi-inlet, multi-spray fluidic cup nozzle with shared interaction region and spray generation method |
US9827384B2 (en) | 2011-05-23 | 2017-11-28 | Boehringer Ingelheim International Gmbh | Nebulizer |
WO2013152894A1 (fr) | 2012-04-13 | 2013-10-17 | Boehringer Ingelheim International Gmbh | Pulvérisateur comprenant des moyens de détrompage |
ES2836977T3 (es) | 2013-08-09 | 2021-06-28 | Boehringer Ingelheim Int | Nebulizador |
JP6643231B2 (ja) | 2013-08-09 | 2020-02-12 | ベーリンガー インゲルハイム インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | ネブライザ |
US10195374B2 (en) | 2014-05-07 | 2019-02-05 | Boehringer Ingelheim International Gmbh | Container, nebulizer and use |
LT3928818T (lt) | 2014-05-07 | 2023-03-27 | Boehringer Ingelheim International Gmbh | Purkštuvas ir talpa |
US10722666B2 (en) | 2014-05-07 | 2020-07-28 | Boehringer Ingelheim International Gmbh | Nebulizer with axially movable and lockable container and indicator |
EP3194079B1 (fr) * | 2014-08-15 | 2022-01-26 | dlhBowles Inc. | Buse de coupelle fluidique à plusieurs entrées et à plusieurs jets pulvérisés comprenant une zone d'interaction commune et procédé de production de jets pulvérisés |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1431526A (en) * | 1921-04-09 | 1922-10-10 | Duriron Co | Spray nozzle |
GB760972A (en) * | 1953-03-27 | 1956-11-07 | Josef Cornel Breinl | Improvements in and relating to spray nozzles |
GB760792A (en) * | 1953-10-13 | 1956-11-07 | Louis Eugene Widolt Montrose O | Improvements in or relating to floating vessels |
US4260110A (en) * | 1977-02-18 | 1981-04-07 | Winfried Werding | Spray nozzle, devices containing the same and apparatus for making such devices |
IT1094411B (it) | 1977-08-02 | 1985-08-02 | Werding Winfried J | Ugello spruzzatore,dispositivi comprendenti tale ugello e procedimento per la loro produzione |
DE3710788A1 (de) * | 1987-03-31 | 1988-11-10 | Wolfgang Fuhrig | Handdruckzerstaeuber |
IT1219735B (it) * | 1988-06-28 | 1990-05-24 | Sar Spa | Pastiglia di ugello nebulizzatore per pompette a mano,particolarmente per lacche |
DK0775023T3 (da) * | 1993-05-25 | 1999-06-23 | Verbena Corp N V | Sprøjtedyser til regulering af gennemstrømningsmængden pr. tidsenhed |
FR2772644B1 (fr) * | 1997-12-24 | 2000-02-04 | D Investissement Ind Et Commer | Buse de pulverisation a moyen statique d'inhibition d'ecoulement |
-
2001
- 2001-03-05 FR FR0103129A patent/FR2821573B1/fr not_active Expired - Fee Related
-
2002
- 2002-03-04 DE DE60201663T patent/DE60201663D1/de not_active Expired - Lifetime
- 2002-03-04 EP EP02701496A patent/EP1365864B1/fr not_active Expired - Lifetime
- 2002-03-04 WO PCT/IB2002/000658 patent/WO2002070141A1/fr not_active Application Discontinuation
- 2002-03-04 AT AT02701496T patent/ATE279988T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2002070141A8 (fr) | 2003-08-14 |
WO2002070141A1 (fr) | 2002-09-12 |
DE60201663D1 (de) | 2004-11-25 |
FR2821573A1 (fr) | 2002-09-06 |
ATE279988T1 (de) | 2004-11-15 |
EP1365864A1 (fr) | 2003-12-03 |
FR2821573B1 (fr) | 2003-06-13 |
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