EP3579979A1 - Tête de pulvérisation de produit fluide et utilisation d'une telle tête - Google Patents
Tête de pulvérisation de produit fluide et utilisation d'une telle têteInfo
- Publication number
- EP3579979A1 EP3579979A1 EP18709666.4A EP18709666A EP3579979A1 EP 3579979 A1 EP3579979 A1 EP 3579979A1 EP 18709666 A EP18709666 A EP 18709666A EP 3579979 A1 EP3579979 A1 EP 3579979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray head
- head according
- equal
- spray
- chamber
- 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.)
- Granted
Links
- 239000007921 spray Substances 0.000 title claims abstract description 56
- 239000012530 fluid Substances 0.000 title claims abstract description 41
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 claims description 9
- 229920001285 xanthan gum Polymers 0.000 claims description 6
- 239000000230 xanthan gum Substances 0.000 claims description 5
- 229940082509 xanthan gum Drugs 0.000 claims description 5
- 235000010493 xanthan gum Nutrition 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 239000002537 cosmetic Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
- B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
Definitions
- the present invention relates to a fluid spray head which comprises a housing body in which a core extends.
- the head also comprises a nozzle engaged in the housing around the core so as to form between them several swirling channels and a swirl chamber into which the swirling channels open.
- the nozzle also includes a dispensing orifice that forms the outlet of the swirl chamber.
- Such a spray head design is quite conventional in the fields of cosmetics, pharmacy or perfumery.
- the spray head is generally mounted on the free end of the valve stem of a pump or valve. In general, the spray head forms a push button on which the user can press axially with the aid of a finger, typically the index finger.
- the object of the present invention is to provide swirl channels, a swirl chamber, and a spray orifice which provide an optimum quality spray for a particular type of fluid product, namely shear thinning fluids.
- the spray head of the present invention can also be implemented with other types of fluid with always a spray of acceptable quality, or optimal.
- Rheofluidification refers to the fact, for a fluid product, of "becoming more fluid" when the flow velocity increases. More specifically, this refers to the fact that the dynamic viscosity decreases when the shear increases. Shear thinning or shear thinning is also referred to as pseudo-plasticity. Rheofluidification should not be confused with thixotropy, which refers to the decrease in viscosity under the effect of shear stress.
- the behavior of a fluid product is shear thinning or "pseudoplastic" (former name sometimes encountered) in the rheofluidifying domain, located after the first Newtonian plateau.
- the viscosity of the fluid decreases (fluidification) with the increase of the velocity gradient.
- the structure of the material is oriented / deformed by shear (example: alignment of the chains of a polymer in the direction of the stress). At high shear rates (corresponding to the second Newtonian plateau), there is destructuration of the material.
- a structure that does not flow requires a greater effort to be destructured.
- Most samples containing large objects in relation to the atomic scale are shear thinners.
- the majority (about 90%) of the substances are rheofluidifying: polymers, lightly loaded emulsions, suspensions, shampoo, etc.
- the present invention aims to optimize the characteristics of the swirl channels, the swirl chamber and / or the dispensing orifice to obtain a homogeneous and balanced spray, both in space and in terms of droplet sizes.
- the minimum angle of spray must be greater than 30 °.
- the droplets at a distance of 20 cm must be sufficiently distributed so as not to form drips.
- the present invention provides a fluid spray head comprising:
- connection sleeve adapted to receive a valve stem of a dispensing member, such as a pump or a valve, the connection sleeve being connected by a supply duct to a housing in which extends a core defining a core side wall and a core front wall,
- nozzle engaged in the housing around the core, the nozzle forming a spray orifice through which the fluid proceeds from the spray head in the form of a spray, the spray orifice having a chamber outlet diameter D3 a chamber outlet section S3,
- connection passages in fluid communication with the supply duct
- each vortex channel having a channel length L1, a channel input having a channel input section S0 and a channel output having a channel output section S1,
- a swirl chamber into which the swirling channels open the swirl chamber defining a longitudinal axis of revolution X and having an axial length L 2, a chamber inlet diameter D 2 and a chamber inlet section S 2 at the level of where the swirl channels open, the dispensing orifice forming an outlet for the swirl chamber,
- L1 > 1 10% of D2, and preferably L1 is equal to about 150% of D2.
- 0.2 mm 2 ⁇ S 3 ⁇ 0.38 mm 2 and preferably S 3 is equal to about 0.33 mm 2 , so that 0.5 mm ⁇ D 3 ⁇ 0.7 mm, and preferably D 3 is equal about 0.65 mm.
- 0.5 mm 2 ⁇ S 2 ⁇ 1.13 mm 2 and preferably S 2 is equal to about 0.785 mm 2 , so that 0.8 mm ⁇ D 2 ⁇ 1.2 mm, and preferably D 2 is equal about 1 mm.
- the dispensing orifice may be cylindrical and has an axial length L3 which is less than about 30% of D3. It is thus possible that the dispensing orifice is formed by an annular ridge, so that L3 is zero.
- L 2> 80% of D 2 and preferably L 2 is equal to approximately 0.88 mm.
- the swirling chamber comprises a frustoconical part whose maximum diameter is equal to D2 and which has an axial length L23 which is between 30% and 60% of D2, and preferably about half of D2.
- the swirl chamber also comprises a cylindrical portion at which the channels of swirling, this cylindrical portion having an axial length L22 which is equal to about 40% of D2.
- the swirl chamber defines, from upstream to downstream, first a cylindrical portion of diameter D2, then a frustoconical portion at which the diameter passes from D2 to D3.
- the swirl chamber does not include a frustoconical portion.
- the swirl chamber consists only of a cylindrical portion which connects to the dispensing orifice by a shoulder.
- S1 is equal to approximately 0.07 mm 2 and S0 is equal to approximately 0.21 mm 2 . This means that the channels have a more or less triangular overall configuration with a large entrance and a small exit.
- the channel inlet forms a rounded wall.
- This rounded wall has a particular advantage with rheofluidifying fluid products that are sensitive to high pressure losses and disturbances. With this rounded wall, the fluid product can penetrate into the swirl channels substantially without disturbances and without loss of load due to the change in orientation. The fluid in the swirling channels is then accelerated, since the section S1 is smaller than the section S0.
- the core side wall is cylindrical and the core front wall is planar. So the core has no orientation, and the nozzle can be engaged around the core without ensuring its orientation. An easier assembly is thus obtained.
- the present invention thus defines a spray head having a very particular configuration, which finds a preferred use with rheofluidifying fluid products, which contain, for example, xanthan gum with a content of the order of 1% or less.
- the spirit of the invention lies in the fact that the fluid product which circulates through the nozzle undergoes the least variation of possible pressure drop, in order to avoid an excessive absorption of energy which then induces an excessive expansion. which disrupts the formation of the droplets which then tend to stick together to form a jet.
- This is particularly the case for rheofluidifying fluid products, but also for other types of fluid product.
- the section (or diameter) ratio of the dispensing orifice and the swirl chamber and / or the length of the swirl channels relative to the swirl chamber diameter are features that can be considered directly influential for the formation of a spray of optimal quality.
- the other features of the nozzle can further improve the quality of the spray.
- FIG. 1 is a vertical cross-sectional view through a dispensing head according to a first embodiment of the invention
- FIG. 2 is an enlarged view of part of FIG.
- FIG. 3 is an even more enlarged view of the nozzle of FIGS. 1 and 2,
- FIG. 4 is a rear perspective view showing the interior of the nozzle of FIG. 3,
- FIG. 5 represents the vein of fluid product inside the nozzle
- FIGS. 6a and 6b are transparent representations of the vein of fluid product of FIG. 5 from two different angles of view
- FIGS. 6a and 6b are transparent representations of the vein of fluid product of FIG. 5 from two different angles of view
- Figure 7 is a view similar to Figure 3 for a second embodiment of the invention.
- the dispensing head comprises a head body 1 which forms a connecting sleeve January 1 in which is engaged the free end of a valve stem P1 of a distribution unit P, which can be a pump or a valve.
- a distribution unit P which can be a pump or a valve.
- a pump which delivers fluid through its valve stem P1 with a pressure of the order of 3 to 6 bars.
- the body 1 forms an axial space 12 which extends substantially in the extension of the valve rod P1.
- the body 1 then forms a supply duct 13 which extends horizontally, that is to say perpendicularly to the connection sleeve January 1.
- This supply duct 13 opens into an annular housing 14 in which a core 16 extends which defines a core side wall 16a and a front end wall 16b.
- the housing 14 opens laterally into the body 1. This is a classic design for a leading body in the fields of cosmetics, perfumery or pharmacy.
- the head also comprises a nozzle 2 which is engaged in force in the housing 14 around the core 16.
- the nozzle 2 has a general shape of bucket with a distribution wall 21 in which opens a spray orifice O.
- the distribution wall 21 comes into abutting contact with the core front wall 16b.
- the nozzle 2 also comprises a lateral fixing wall 22 which is engaged around the core 16.
- the fixing side wall 22 may also form one or more speargrip (s) 23 to secure the nozzle in the housing 14.
- the distribution wall 21 forms upstream of the dispensing orifice O a swirling chamber C which is fed by several swirling channels T, themselves fed by several connecting passages P, all formed between the core 16 and the nozzle. 2.
- the connecting passages P are fed by the annular space 15. This is a design out of fact classic for a nozzle in the fields of perfumery, cosmetics or even pharmacy.
- the spray head also comprises a trim ring 3 which is in the form of a cover in which the core 1 is engaged.
- the trim band 3 comprises a lateral skirt 31 which is pierced by a window 32 with respect to the distribution wall 21 of the nozzle 2.
- the upper wall 30 of the trim band 3 forms a bearing surface for a finger of a user. Again, it is a quite conventional design for a fret dressing in the field of perfumery, cosmetics or pharmacy.
- the dispensing orifice O has a chamber outlet diameter D3 which defines a chamber outlet section S3, as well as a depth or axial length L3 measured along the X axis of FIG.
- the swirl chamber C is centered on the dispensing orifice O along the longitudinal axis of revolution X.
- the swirl chamber C has a maximum chamber inlet diameter D 2 defining a maximum chamber inlet section S 2 .
- the outlet of the chamber is formed by the dispensing orifice O, so that the minimum chamber outlet diameter is equal to D3.
- the swirl chamber C comprises a cylindrical portion C2 whose diameter is D2 and a frustoconical portion C3 disposed between the cylindrical portion C2 and the dispensing orifice O, so that the maximum diameter of the cylindrical part C3 is equal to D2 and its minimum diameter is equal to D3.
- the nozzle 2 comprises three swirl channels T which have a general triangular configuration.
- the three swirl channels T are arranged equiangularly around the swirl chamber C.
- Each swirl channel T comprises a channel input T0 defining a channel input section S0 and a channel output T1 defining a section S1 channel output.
- Each swirl channel T also defines a length L1, as can be seen in FIG. 4.
- Each swirling channel T comprises two walls T2 and T3 that extend substantially tangentially to the swirl chamber C. As a result, two walls T2 and T3 are not parallel, but conversely converge towards the swirl chamber, where they form between them the channel T1 of section S1. Therefore, S0 is greater than S1.
- the other two walls (not referenced) of the swirl channel T are identical, parallel and respectively formed by the front wall 16b of the core 16 and the distribution wall 21.
- the fixing lateral wall 22 internally forms three reinforcements 24 which are arranged between the three channel inputs T0. These three reinforcements 24 have the function of coming into contact with the side wall 16a of the core 16. Between the reinforcements 24, the nozzle 2 forms with the core 16 the three connecting passages P. These connecting passages P are in fluid communication with T0 channel inputs.
- the channel inputs T0 comprise a rounded wall Ta, so that the fluid product which travels in the connecting passages P is deflected progressively along the rounded walls Ta in the respective swirling channels T
- These rounded walls Ta thus form soft ramps which respectively connect each connecting passage P to a swirl channel T. They make it possible to pass without breaking an axial orientation (that of connecting passages P) to a radial orientation (that of the swirling channels).
- FIGS. 5, 6a and 6b represent fluid veins, that is to say the volume occupied by the fluid product between the core 16 and the In other words, the fluid flow corresponds to the volumes of the swirling channels, the swirl chamber and the distribution orifice O.
- the sections S2 and S3 extend perpendicular to the X axis and are arranged parallel to each axial end of the swirl chamber C.
- the outlet section S1 of the channels extends parallel to the axis X substantially tangential to the swirl chamber C.
- the inlet section SO extends parallel to the sections S2 and S3, but eccentrically with respect to the swirl chamber C. It can even be said that the section SO extends in the same plane as the section S3, since they are defined at the front wall 16b of the core 16. It can also be said that the sections S0 and S1 extend in respective planes arranged perpendicularly one by report to the other.
- section shall be understood as the maximum section
- diameter shall be understood as the maximum diameter
- length shall be understood as the maximum length.
- about means ⁇ 5% when it comes to percentage and ⁇ 10% when it comes to size.
- R1 30% of S2 ⁇ S3 ⁇ 55% of S2, and preferably S3 is equal to about 42% of S2, which corresponds in terms of diameter to: 54% of D2 ⁇ D3 ⁇ 74% of D2, and preferably D3 is about 65% of D2.
- R5 30% of D2 ⁇ L23 ⁇ 60% of D2, and preferably L23 is equal to about half of D2,
- R6 30% of D2 ⁇ L22 ⁇ 50% of D2, and preferably L22 is equal to about 40% of D2,
- R7 implies that L3 may be zero, so that the dispensing orifice O may be formed by an annular ridge.
- a nozzle particularly well adapted to the spraying of a fluid product containing about 0.5% of gel or xanthan gum was made with the following dimensions (with a tolerance of 10%):
- L3 0.025 mm.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1751093A FR3062582B1 (fr) | 2017-02-09 | 2017-02-09 | Tete de pulverisation de produit fluide et utilisation d'une telle tete. |
PCT/FR2018/050344 WO2018146433A1 (fr) | 2017-02-09 | 2018-02-13 | Tête de pulvérisation de produit fluide et utilisation d'une telle tête |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3579979A1 true EP3579979A1 (fr) | 2019-12-18 |
EP3579979B1 EP3579979B1 (fr) | 2020-12-16 |
Family
ID=58455316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18709666.4A Active EP3579979B1 (fr) | 2017-02-09 | 2018-02-13 | Tête de pulvérisation de produit fluide et utilisation d'une telle tête |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3579979B1 (fr) |
KR (1) | KR20200110150A (fr) |
CN (1) | CN110382119B (fr) |
FR (1) | FR3062582B1 (fr) |
WO (1) | WO2018146433A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022152930A1 (fr) * | 2021-01-18 | 2022-07-21 | Bonsens Ab | Buse à turbulence et procédés pour la fabrication de celle-ci |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2708908B1 (fr) * | 1993-08-11 | 1995-10-13 | Oreal | Bouton-poussoir à buse de pulvérisation destiné à être monté sur un distributeur et distributeur équipé d'un tel bouton-poussoir. |
US5711488A (en) * | 1995-10-13 | 1998-01-27 | The Procter & Gamble Company | High pressure swirl atomizer |
US9242256B2 (en) * | 2007-07-17 | 2016-01-26 | S.C. Johnson & Son, Inc. | Aerosol dispenser assembly having VOC-free propellant and dispensing mechanism therefor |
EP3177405B1 (fr) * | 2014-08-06 | 2020-05-06 | S.C. Johnson & Son, Inc. | Éléments insérés de pulvérisateur |
-
2017
- 2017-02-09 FR FR1751093A patent/FR3062582B1/fr active Active
-
2018
- 2018-02-13 KR KR1020197026156A patent/KR20200110150A/ko not_active Application Discontinuation
- 2018-02-13 CN CN201880007860.4A patent/CN110382119B/zh active Active
- 2018-02-13 EP EP18709666.4A patent/EP3579979B1/fr active Active
- 2018-02-13 WO PCT/FR2018/050344 patent/WO2018146433A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
FR3062582B1 (fr) | 2019-03-29 |
EP3579979B1 (fr) | 2020-12-16 |
CN110382119B (zh) | 2021-10-26 |
KR20200110150A (ko) | 2020-09-23 |
CN110382119A (zh) | 2019-10-25 |
WO2018146433A1 (fr) | 2018-08-16 |
FR3062582A1 (fr) | 2018-08-10 |
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