• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Fluid dispensing head comprising a planar spray wall (26) pierced with holes (O), so as to define a main plane Pp, a central axis Y orthogonal to the main plane Pp, normal N parallel to the central axis Y and perpendicular to the main plane Pp, an orthogonal plane Po passing through the central axis Y and the normal N of the hole considered and a radial axis X, corresponding to the secant of the main plane Pp and of the orthogonal plane Po, characterized in that most of the holes (O) extend along an axis Zn making an angle α of 5 to 45 degrees, advantageously 5 to 30 degrees, relative to the normal N corresponding, this axis Zn having a divergent orientation relative to the central axis Y, with a normal projection on the orthogonal plane Po having a non-zero radial component along the radial axis X.
    公开号:FR3074430A1
    申请号:FR1852079
    申请日:2018-03-09
    公开日:2019-06-07
    发明作者:Stephane Beranger；Frederic Duquet；Christophe Pierre
    申请人:Aptar France SAS；
    IPC主号:
    专利说明:

    The present invention relates to a fluid dispensing head intended to be associated with a dispensing member such as a pump or a valve. The dispensing head can be integrated into, or mounted on, the dispensing member. The dispensing head may include a support surface so as to constitute a pusher on which the user presses to actuate the dispensing member. As a variant, the dispensing head can have no support surface. This kind of fluid dispenser head is frequently used in the fields of perfumery, cosmetics or even pharmacy.
    A conventional dispensing head, for example of the pusher type, comprises:
    - a support surface on which a user can press with a finger, for example the index finger,
    - an inlet well intended to be connected to an outlet of a distribution member, such as a pump or a valve,
    - an axial mounting housing in which extends a pin, defining a side wall and a front wall, and
    - a cup-shaped nozzle comprising a substantially cylindrical wall, one end of which is closed off by a spraying wall forming a spraying orifice, the nozzle being mounted along an axis X in the axial mounting housing with its cylindrical wall engaged around the spindle and its spray wall in axial abutment against the front wall of the spindle.
    Typically, the inlet well is connected to the axial mounting housing by a single supply conduit. On the other hand, it is common to form a swirl system at the spray wall of the nozzle. A swirl system conventionally comprises several tangential swirl channels which open into a swirl chamber centered on the spray orifice of the nozzle. The swirl system is located upstream of the spray orifice.
    In document EP1878507A2, several embodiments of a nozzle are described, comprising a spray wall pierced with several spray holes of substantially or perfectly identical diameter, of the order of 1 to 100 μm, with a tolerance of 20%. . Such a spray wall would generate a spray whose droplet size is relatively homogeneous. In one embodiment of this document, the holes are arranged in concentric circles, with an inclination of around 10 to 60 degrees and a tangential orientation, so as to create a swirl spray around the central axis. The spray opening angle is therefore zero, or very small.
    In document EP1698399A1, the spray wall is curved, but the holes were drilled perpendicular to the plane of the wall with a constant section, while the wall was still planar. The curvature of the wall allows the holes to diverge, once the wall is curved. It is not explained in this document how, or when, the pierced flat wall is curved. In the drawings, the curvature of the bending is small, so that the opening angle of the spray is small.
    The present invention aims to define a planar spray wall providing a spray opening angle much greater than that of the walls of documents EP1878507A2 and EP1698399A1.
    To achieve this object, the present invention provides a fluid dispenser head comprising a spraying wall pierced with holes through which the fluid under pressure passes so as to be sprayed into fine droplets, the spraying wall being flat, of so as to define a main plane Pp, a central axis Y orthogonal to the main plane Pp, normals N parallel to the central axis Y and perpendicular to the main plane Pp, an orthogonal plane Po passing through the central axis Y and the normal N of the hole considered and a radial axis X, corresponding to the secant of the main plane Pp and of the orthogonal plane Po, characterized in that most of the holes extend along an axis Zn making an angle a of 5 to 45 degrees, advantageously 5 at 30 degrees, relative to the corresponding normal N, this axis Zn having a diverging orientation with respect to the central axis Y, with a normal projection on the ortho plane gonal Po having a nonzero radial component along the radial axis X.
    By "radial component", it should therefore be understood that the normal projection of the axis Zn on the orthogonal plane Po of the hole considered has a component along the axis X, which passes through the central axis Y and the normal N in the main plane Pp. In the case of the tangent holes of document EP1878507A2, this radial component is zero.
    Thanks to this "radial component", the axes Zn of the holes diverge towards the outside with respect to the central axis Y, which has the effect of opening the angle of diffusion of the spray, and this, without having to bulge Wall.
    The holes can all have the same orientation, with a single angle a, or on the contrary, the holes can have several different orientations, with for example two or three different values for the angle a.
    According to another characteristic of the invention, the holes may have different diameters, advantageously two or three. The larger diameter holes may have an angle a less than the smaller diameter holes, or conversely, the larger diameter holes may have an angle a greater than the smaller diameter holes.
    The holes can be arranged in concentric circles, or alternatively, the holes can be arranged in an aligned manner along line segments, the holes of the same line segment having the same angle a and the same diameter. Each line segment can include from 2 to 20 holes. The line segments can be arranged in parallel. Line segments with holes of different diameters can be arranged in parallel. Alternatively, the line segments with holes of different diameters are arranged alternately. The holes may have an overall polygonal arrangement, for example triangular, square, rectangular, pentagonal, hexagonal, octagonal or even decagonal. The right sides of the polygon are formed by line segments of holes of the same angle a and the same diameter.
    According to a practical embodiment which is conventional in the fields of perfumery, cosmetics and sometimes pharmacy, the dispensing head comprises:
    - an inlet well intended to be connected to an outlet of a distribution member, such as a pump or a valve,
    - an axial mounting housing,
    - a supply duct connecting the inlet well to the axial mounting housing,
    - A nozzle comprising a mounting wall engaged in the axial mounting housing, the spraying wall being integral with the nozzle.
    The head can be in the form of a conventional pusher with an upper support surface, on which a user can press with a finger, for example the index finger. The axial housing then opens laterally.
    As an indication, the holes can be 10 to 500 in number and have a diameter of the order of 1 to 100 μm, advantageously of the order of 5 to 30 μm, and preferably of the order of 5 to 20 pm. The more holes, the smaller their diameter, and vice versa. The cumulative section of all the holes is preferably less than 100,000 μm 2 .
    The spirit of the invention resides in the fact of producing, in a flat spraying wall, divergent holes to generate sprays whose opening angle is large, and approximately comparable to that of a conventional head with a single hole and a vortex system upstream.
    The invention will now be described more fully with reference to the accompanying drawings, giving by way of nonlimiting examples, several embodiments of the invention.
    In the figures:
    FIG. 1 is a view in vertical cross section through a pump fitted with a dispensing head according to the invention,
    FIG. 2 is a greatly enlarged sectional view of the dispensing head of FIG. 1,
    FIG. 3a is a very schematic view illustrating the method of manufacturing a nozzle according to the invention,
    FIG. 3b is a perspective view of the nozzle manufactured with the method of FIG. 3a,
    FIG. 3c is a perspective view of the spraying wall of the nozzle manufactured with the method of FIG. 3a and integrated into the nozzle of FIG. 3b, and
    FIGS. 4a to 4c are views illustrating a first embodiment of the invention,
    FIG. 5 is a schematic view showing the various geometric parameters used to define the characteristics of the holes in the spray walls according to the invention,
    FIG. 6 is a view illustrating a second embodiment of the invention for a spray wall,
    FIGS. 7a and 7b illustrate the orientations of the holes in the spraying wall of FIG. 6,
    FIGS. 8a and 8b illustrate alternative orientations of the holes in the spraying wall of FIG. 6,
    FIGS. 9a and 9b illustrate alternative orientations of the holes in the spraying wall of FIG. 6,
    FIGS. 10a to 10c are views illustrating a third embodiment of the invention for a spray wall,
    FIG. 11 is a view illustrating a fourth embodiment of the invention for a spray wall,
    FIGS. 12a and 12b are views illustrating a fifth embodiment of the invention for a spray wall,
    FIGS. 13a and 13b are views illustrating a sixth embodiment of the invention for a spray wall,
    FIGS. 14a and 14b are views illustrating a seventh embodiment of the invention for a spray wall, and
    Figures 15a to 15d are views illustrating an eighth embodiment of the invention for a spray wall.
    In FIG. 1, the dispensing head T is mounted on a dispensing member P, such as a pump or a valve, which has a completely conventional design in the fields of perfumery or pharmacy. This dispensing member P is actuated by the user by pressing axially with a finger, generally the index finger, on the head T.
    In the case of a pump, the normal pressure generated by this axial support on the fluid inside the pump P and the head T is of the order of 5 to 6 bars, and preferably 5.5 at 6 bars. Peaks at 7 to 8 bars are however possible, but we are then in abnormal conditions of use. Conversely, when approaching 2.5 bars, the spray deteriorates, between 2.5 and 2.2 bars, the spray is strongly altered, and below 2 bars, there is no more spray.
    In the case of an aerosol equipped with a valve, the initial pressure generated by the propellant gas is of the order of 12 to 13 bars and then drops, as the aerosol empties, up to about 6 bars. An initial pressure of 10 bars is common in the field of perfumery and cosmetics.
    When the assembly comprising the head T and a pump or valve is mounted on a fluid reservoir, this constitutes a fluid dispenser, which is entirely manual, without any energy supply, in particular electrical.
    In comparison, in the technical field of ultrasonic vibration sprayers (especially piezoelectric), the pressure of the fluid product at the nozzle is of the order of 1 bar, that is to say atmospheric pressure, or even slightly less . Due to the pressure value used and the energy used, these ultrasonic vibration sprayers are outside the scope of the invention.
    Reference is made to FIGS. 1 to 2 to describe in detail the constituent parts, as well as their mutual arrangement, of a dispensing head T produced according to the invention.
    The dispensing head T comprises two essential constituent parts, namely a head body 1 and a nozzle 2. These two parts can be produced by injection molding of plastic material. The head body 1 is preferably made in one piece: it can however be made from several pieces assembled together. The nozzle 2 can be produced in a single-piece mono-block manner, but preferably it is produced by overmolding, as will be seen below.
    The head body 1 comprises a substantially cylindrical peripheral skirt 10 which is closed at its upper end by a plate 14. The head body 1 also comprises a connection sleeve 15 which here extends concentrically inside the peripheral skirt 10. The connection sleeve 15 extends downwards from the plate 14. It internally defines an inlet well 11 which is open at the bottom and closed at its upper end by the plate 14. The sleeve connection 15 is intended to be mounted on the free end of an actuating rod P5 of the dispensing member P. This actuating rod P5 can be moved back and forth along a longitudinal axis. The actuating rod P5 is hollow so as to define a delivery conduit in communication with a metering chamber PO of the pump P or of the valve. The inlet well 11 extends in the extension of the actuating rod P5 so that the fluid product coming from the metering chamber PO can flow into the inlet well 11. The head body 1 defines also a supply conduit 13 which connects the inlet well 11 to a mounting housing 12, as can be seen in FIG. 2. The axial mounting housing 12 is of overall cylindrical configuration, thus defining an internal wall which is substantially cylindrical. The supply duct 13 opens into the mounting housing 12 in a centered manner. It can also be noted that the internal wall of the mounting housing 12 has attachment profiles 121 allowing better maintenance of the nozzle 2, as will be seen below.
    Optionally, the head body 1 can be engaged in a covering capsule 3 comprising upper support surface 31 for a finger and a lateral envelope 32 forming a lateral opening 33 for the passage of the nozzle 2.
    The nozzle 2 has a substantially cylindrical overall configuration in the form of a small sleeve 20 which is open at its two ends, but which is internally closed off by a spray wall 26 at the level of which several spray holes or orifices O are formed. More specifically, the sleeve 20 is of substantially cylindrical overall shape, preferably with an axial symmetry of revolution about an axis Y, as shown in FIG. 2. Thus, the nozzle 2 does not need to be oriented angularly before its presentation in front of the entrance to the axial mounting housing 12. However, it is sometimes necessary to orient the nozzle 2, since its spraying wall 26 is not of revolution. The sleeve 20 forms an external mounting wall 21 which is advantageously provided with attachment reliefs able to cooperate with the attachment profiles 121 of the mounting housing 12. It may be noted that the spraying wall 26 extends up to level of the external mounting wall 21, where they form several projecting tabs 27 which bite into the mounting housing 12. Once the axial mounting is completed, the nozzle 2 is in the configuration shown in FIGS. 1 and 2.
    Referring to Figure 3a, it can be seen how a nozzle can be made. We start with a strip B, preferably made of stainless steel. The first step is to drill holes O, which will be defined below. This drilling step can be performed with a LASER technique. A second step consists in punching cutouts C around the holes O, so as to leave several bridges 27a. Then, an optional step B consists in deforming the strip B at the level of the holes O to bend it. The next step is to overmold the sleeve 20 on the area surrounding the holes O and the bridges 27a. The final step consists in cutting the bridges 27a around the sleeve 20 so as to leave the projecting tabs 27, which will serve to increase the resistance of the nozzle 2 in the mounting housing 12. It should be noted that it is not necessary to cut the bridges 27a flush with the sleeve 20, which would be difficult and expensive. The method of manufacturing the nozzle, with a flat or curved spray wall, is a subject which could be protected in itself, that is to say independently of the characteristics linked to the formation, the size, the number and the orientation. Holes. The fact of overmolding the sleeve 20 on the spray wall 26 leaving protruding tabs is a characteristic which could be protected in itself, that is to say independently of the characteristics linked to the formation, size, number and l orientation of the holes.
    The manufacturing process which has just been described is advantageous, but not unique. The spray wall 26 can be fixed to the sleeve 20 by any other means, such as bi-injection, snap-fastening, crimping, swaging, etc.
    The spraying wall 26 may be a single-piece mono-block part, an assembly of several parts or else a multilayer product, for example laminated. It can be made of metal, plastic, ceramic, glass or a combination of these. More generally, any material capable of being pierced with small holes or orifices can be used. The thickness of the spraying wall 26, at the level where the holes O are formed, is of the order of 10 to 100 μm and preferably of the order of 50 μm. The number of holes O is of the order of 20 to 500. The diameter of the spraying wall 26, at the level where the holes O are formed, is of the order of 0.5 to 5 mm. In practice, the spraying wall 26 is preferably entirely planar on its two faces, so that its thickness is then constant. One can however imagine that the upstream face is not planar, but the downstream face is planar. The wall 26 is not curved outwards. The density of the holes O on the wall 26 can be homogeneous, or on the contrary inhomogeneous, for example increasing or decreasing from the center of the wall.
    The holes O can form a network of holes comprising two series of holes O of different sizes, with the holes O of the same series having an identical or unique size of holes, taking into account the manufacturing tolerances, which do not exceed 10 %. Thus, for a spray wall 26 pierced with 100 holes O, it is possible to have a first series of 50 holes O having a diameter of 10 μm and a second series of 50 holes O having a diameter of 20 μm. The first series of 50 holes O will generate a spray of fine droplets whose particle size curve has a peak formed by a relatively narrow Gaussian, then the second series of 50 holes O will generate a spray of larger droplets whose particle size curve also a peak formed by a relatively narrow Gaussian, which is however offset and distinct from the first Gaussian of the first series. A spray is thus obtained with two majority droplet sizes corresponding to the two Gaussian particle size curves.
    The distribution between the series can vary from 10 to 90%, and vice versa, with a minimum of five O holes per series. The size of the holes in the first series can vary from 15 to 50 µm, while the size of the holes in the second series can vary from 5 to 20 µm, always with the size of the first series significantly larger, at least around 30%, to that of the second series.
    According to the invention, most of the holes O are diverging towards the outside with respect to the central axis Y. Certain holes may however be parallel to the central axis Y, and in particular the holes which are located closest to this Y axis. In general, the holes furthest from the Y axis are more divergent than the holes close to the Y axis. We can say that the divergence increases with the distance from the Y axis. is not, however, an absolute rule.
    Referring to Figures 4a, 4b and 4c, we see a first embodiment, in which all the holes O are located on one side of the central axis Y, in this case below the axis Y. The holes O are arranged in an aligned manner along three straight lines L1, L2 and L3, which are parallel to each other, and advantageously equidistant. The segment L1 comprises three holes O, the segment L2 comprises five holes O and the segment L3 also comprises five holes O. All the holes O can have the same diameter or different diameters. Preferably, all the holes O of the same line segment have the same diameter. In this embodiment, there will be a maximum of three different diameters, since there are three line segments.
    It can be seen in FIG. 4c that the spraying wall is perfectly flat. Figure 4 is a sectional view along a plane which passes through the axis Y and which is perpendicular to the line segments L1, L2 and L3, so as to pass through the three holes O which are aligned under the axis Y in Figure 4b. It can also be seen in FIG. 4c that the holes O extend along axes Z1, Z2 and Z3 which make angles a1, a2 and a3 respectively with respect to the axis Y. These angles are different from each others: the angle a1 of the segment L1 is smaller than the angle a2 of the segment L2 and the angle a3 of the segment L3 is the largest. Thus, the further the segment Ln moves away from the Y axis, the larger the angle an. The angle an can vary from 0 to 45 degrees.
    According to the invention, all the holes of the same line segment have the same orientation. In other words, all the holes in the same line segment are parallel to each other. We can thus say that all the holes of the same line segment make the same angle an with respect to the normal to the plane of the wall at the level of the hole considered.
    FIG. 5 aims to illustrate the geometrical parameters making it possible to define geometric characteristics of the orientations of the holes O. The spraying wall 26 defines a main plane Pp. The spraying wall 26 also defines a central axis Y. At the location where a hole O opens onto the downstream face of the spraying wall 26, we can define a normal N which is perpendicular to the plane Pp and parallel to the axis Y. We can thus define orthogonal planes Po passing through the axis Y and a normal N and an X axis passing through the Y axis and the N normal in the main plane Pp. Each hole O extends along an axis Zn, which can be inscribed in its orthogonal plane Po. In this simple case, it is easy to determine the radial component x of the axis Zn along the axis X. When the axis Zn is not registered in its orthogonal plane Po, it is necessary to project it normally in its orthogonal plane Po to be able to determine its radial component x.
    Returning to the embodiment of FIGS. 4a to 4c, it is thus possible to determine the component x of the axes Zn of the holes O of the three straight lines L1, L2 and L3, and it can be noted that all the holes O have a radial component x which is not zero and furthermore positive, which means that all the holes O are radially diverging with respect to the central axis Y. The three holes O of FIG. 4c, which are aligned below the axis Y in FIG. 4b, extend along axes Zn which are inscribed in their common orthogonal plane Po. The radial component x is then directly visible on the common orthogonal plane Po. On the other hand, the other holes O extend according to Zn axes which are not inscribed in their respective orthogonal plane Po. It is then necessary to project these Zn axes normally or orthogonally to the respective orthogonal plane Po in order to be able to determine the radial component x along the X axis. general that the comp Radial daring x is measured after projection of the Zn axis on the respective orthogonal plane Po, whether or not the Zn axis is inscribed in this respective orthogonal plane Po.
    In FIG. 6, the spraying wall 26a comprises two pairs of three straight segments L1, L2 and L3, arranged symmetrically with respect to the central axis Y. The segments can be identical or similar to those of the embodiment Figures 4a to 4c.
    FIGS. 7a and 7b show the orientations and the diameters of the holes O of the segments of the spraying wall 26a of FIG. 6, which are aligned above and below the central axis Y. The angle a1 made by the central holes of the two L1 segments is 5 degrees. The angle a2 made by the central holes of the two segments L2 is 10 degrees. The angle a3 made by the central holes of the two segments L3 is 15 degrees. All the holes O of the two segments L1 make an angle a1 of 5 degrees relative to their respective normal N. All the holes O of the two segments L2 make an angle a2 of 10 degrees relative to their respective normal N. All the holes O of the two segments L3 make an angle a3 of 15 degrees relative to their respective normal N.
    Furthermore, all the holes O of the two segments L1 have a diameter of 15 μm. All the holes O of the segments L2 and L3 have a diameter of 10 μm. The spray generated will have a droplet size distribution at two Gaussians, with an almost full diffusion cone and an opening angle of around 30 degrees.
    Figures 8a and 8b show an alternative embodiment of Figures 6, 7a and 7b, in which the orientations and the diameters of the holes O of the segments are different. Indeed, all the holes O of the spray wall 26b all have the same orientation, in this case 15 degrees in the example shown. Another orientation from 0 to 45 degrees is possible. All the holes O of the two segments L1 have a diameter of 15 μm. All the holes O of the two segments L2 have a diameter of 10 μm. All the holes O of the two segments L3 have a diameter of 5 μm. The generated spray will have a droplet size distribution at three Gaussians, with a hollow diffusion cone and an opening angle of around 30 degrees.
    Figures 9a and 9b also show an alternative embodiment of Figures 6, 7a and 7b, in which there are two pairs of four line segments L1 to L4 having different orientations along axes Y1 to Y4. The axes Y1 make an angle a1 of 0 degrees with respect to their respective normal N. The axes Y2 make an angle a1 of 10 degrees with respect to their respective normal N. The axes Y3 make an angle cd of 20 degrees with respect to their respective normal N. The axes Y4 make an angle cd of 45 degrees relative to their respective normal N. All the holes O have a single diameter of 10 to 30 μm. The generated spray will have a droplet size distribution to a single Gaussian, with a full diffusion cone and a large opening angle of around 90 degrees.
    Figures 10a to 10c show a spray wall 26d pierced with holes O arranged in the form of three concentric circles. The axis Z1 of the holes O of the smallest circle makes the same angle cd, which can be for example of the order of 5 degrees. The axis Z2 of the holes O of the intermediate circle has the same angle a2, which can for example be of the order of 15 degrees. The axis Z3 of the holes O of the largest circle makes the same angle a3, which can for example be of the order of 30 degrees. The diameter of the holes O of the smaller circle is larger than that of the holes O of the other two circles. All the holes O can be oriented so that all of the axes Yn are written in their respective orthogonal plane Po. The angles an can therefore be read in the same way with respect to the axis Y as with their normal respective N.
    In FIG. 11, the spraying wall 26e comprises a triplet of three straight lines L1, L2 and L3, arranged in a triangle. The segments can be identical or similar to those of the embodiment of FIGS. 4a to 4c, 6, 7a and 7b or 8a and 8b. The angles an can be the same or different, ranging from 0 to 45 degrees. The diameters of the holes O can be identical or different, ranging from 1 to 100 μm.
    In FIGS. 12a and 12b, a spraying wall 26f is seen comprising four series of three straight lines L1, L2 and L3, arranged in a square. The segments can be identical or similar to those of the embodiment of FIGS. 4a to 4c, 6, 7a and 7b or 8a and 8b. The angles an can be the same or different, ranging from 0 to 45 degrees. The diameters of the holes O can be identical or different, ranging from 1 to 100 μm.
    In FIGS. 13a and 13b, we see a spraying wall 26g comprising five series of three straight segments L1, L2 and L3, arranged in a pentagon. The segments can be identical or similar to those of the embodiment of FIGS. 4a to 4c, 6, 7a and 7b or 8a and 8b. The angles an can be the same or different, ranging from 0 to 45 degrees. The diameter of the holes O of the smaller pentagon is larger than that of the other two pentagons.
    Figures 14a and 14b show a spray wall 26h comprising eight series of three straight lines L1, L2 and L3, arranged in an octagon. The segments can be identical or similar to those of the embodiment of FIGS. 4a to 4c, 6, 7a and 7b or 8a and 8b. The angles an can be the same or different, ranging from 0 to 45 degrees. The diameter of the holes O of the largest octagon is larger than that of the intermediate octagon, which is larger than that of the smaller octagon.
    Figures 15a to 15d show a spray wall 26g comprising a pair of three straight lines L11, L12, L3 and L21, L22 and L23, which are not arranged symmetrically with respect to the central axis Y, but at otherwise nested or alternately.
    We can for example start by drilling the three straight lines L11, L12 and L13 with holes O which make an angle a1 upwards. The segment L11 is located below the Y axis, while the other two segments L12 and L13 are located below the Y axis. The holes O of the L11 segment have a larger diameter than those of the other two segments L12 and L13.
    The holes O of the three other segments L21, L22 and L23 are then drilled which make an angle a2 downwards. The segment L21 is located below the Y axis, while the other two segments L22 and L33 are located below the Y axis. The holes O of the segment L21 have a larger diameter than those of the other two segments L22 and L23.
    The absolute value of the angles a1 and a2 can be the same. The diameter of the holes O of the segments L11 and L21 can be identical. The diameter of the holes O of the segments L12, L13, L22 and L23 can be identical. The holes O of the segments L13 and L23 can be aligned. On the other hand, the holes O of the segments L12 and L21 are staggered and the holes O of the segments L11 and L22 are also staggered, in order to prevent the jets coming from these holes O from colliding and creating effects undesirable.
    Thus, in general, apart from the case where the axis Zn is parallel to the central axis Y, all the other axes Zn have a radial component x, which is in most cases positive, in the sense that the axis Zn moves away from the central axis Y.
    The angle an goes from 0 degrees, in the case where the Zn axis is parallel or coincident with the central Y axis, up to 45 degrees. An angle of about 30 degrees gives a satisfactory result. A minimum non-zero angle for one year is about 5 degrees.
    The total number of holes, the arrangement of the holes on the spray wall, the number of holes per line segment or circle, the orientation of the holes and the diameter of the holes are all parameters that influence the characteristics of the spray. These parameters must be set 5 depending on the fluid to be sprayed and the multiple functions sought: concentrated spray with a restricted opening angle or wide spray with a large opening angle, hollow or full diffusion cone, spray with one or more several Gaussian distribution (s), etc.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    claims
    1, - Fluid product distribution head (T) comprising a spraying wall (26; 26a; 26b; 26c; 26d; 26e; 26f; 26g; 26h; 26i) pierced with holes (O) through which the fluid product under pressure passes so as to be sprayed into fine droplets, the spraying wall (26; 26a; 26b; 26c; 26d; 26e; 26f; 26g; 26h; 26i) being planar, so as to define a main plane Pp, a central axis Y orthogonal to the main plane Pp, normals N parallel to the central axis Y and perpendicular to the main plane Pp, an orthogonal plane Po passing through the central axis Y and the normal N of the hole considered and a radial axis X, corresponding to the secant of the main plane Pp and the orthogonal plane Po, characterized in that most of the holes (O) extend along an axis Zn making an angle a of 5 to 45 degrees, advantageously 5 to 30 degrees, relative to the corresponding normal N, this axis Zn having a diverging orientation pa r with respect to the central axis Y, with a normal projection on the orthogonal plane Po having a nonzero radial component along the radial axis X.
    [2" id="c-fr-0002]
    2, - Dispensing head according to claim 1, wherein the holes (O) all have the same orientation.
    [3" id="c-fr-0003]
    3, - Dispensing head according to claim 1, wherein the holes (O) have several different orientations, advantageously two or three.
    [4" id="c-fr-0004]
    4, - Dispensing head according to any one of the preceding claims, in which the holes (O) have different diameters, advantageously two or three.
    [5" id="c-fr-0005]
    5, - Dispensing head according to claim 4, wherein the holes (O) of larger diameter have an angle a less than the holes (O) of smaller diameter.
    [6" id="c-fr-0006]
    6, - Dispensing head according to claim 4, wherein the holes (O) of larger diameter have an angle a greater than the holes (O) of smaller diameter.
    [7" id="c-fr-0007]
    7, - Dispensing head according to any one of the preceding claims, in which the holes (O) are arranged in an aligned manner along straight lines (L1, L2, L3; L11, L12, L13, L21, L22, L23), the holes (O) of the same line segment (L1, L2, L3; L11, L12, L13, L21, L22, L23) having the same angle a and the same diameter.
    [8" id="c-fr-0008]
    8, - Dispensing head according to claim 7, in which line segments (L1, L2, L3; L11, L12, L13, L21, L22, L23) with holes of different diameters are arranged in parallel.
    [9" id="c-fr-0009]
    9, - Dispensing head according to claim 8, wherein the line segments (L11, L12, L13, L21, L22, L23) with holes of different diameters are arranged alternately.
    [10" id="c-fr-0010]
    10, - Dispensing head according to any one of the preceding claims, in which the holes (O) have an overall polygonal arrangement.
    [11" id="c-fr-0011]
    11, - Dispensing head according to any one of the preceding claims, comprising:
    - an inlet well (11) intended to be connected to an outlet of a distribution member, such as a pump or a valve,
    - an axial mounting housing (12),
    - a supply duct (13) connecting the inlet well (11) to the axial mounting housing (12),
    - a nozzle (2) comprising a mounting wall (21) engaged in the axial mounting housing (12), the spraying wall (26;
    5 26a; 26b; 26c; 26d; 26th; 26f; 26g; 26h; 26i) being integral with the nozzle (2).
    [12" id="c-fr-0012]
    12, - Fluid product distributor comprising a fluid product distribution head (T) according to any one of claims 1 to 10 mounted on a pump (P) or a valve, itself mounted on a fluid product tank .
    类似技术:
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    同族专利:
    公开号 | 公开日
    BR112019010499A2|2019-09-17|
    FR3059573A1|2018-06-08|
    US20200391229A1|2020-12-17|
    JP2019536626A|2019-12-19|
    CN111432938A|2020-07-17|
    BR112020009538A2|2020-11-03|
    BR112020009541A2|2020-11-03|
    FR3074431B1|2021-07-09|
    FR3059573B1|2019-01-25|
    FR3074431A1|2019-06-07|
    FR3074432A1|2019-06-07|
    CN110035830A|2019-07-19|
    EP3548185A1|2019-10-09|
    FR3074429A1|2019-06-07|
    US20190388910A1|2019-12-26|
    BR112020009539A2|2020-11-03|
    CN111655381A|2020-09-11|
    WO2018100321A1|2018-06-07|
    CN111432939A|2020-07-17|
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    法律状态:
    2020-03-23| PLFP| Fee payment|Year of fee payment: 3 |
    2021-03-26| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1661845A|FR3059573B1|2016-12-02|2016-12-02|HEAD OF DISTRIBUTION OF FLUID PRODUCT|
    IBWO2017053344|2017-12-01|
    PCT/FR2017/053344|WO2018100321A1|2016-12-02|2017-12-01|Head for dispensing fluid material|PCT/FR2018/053071| WO2019106321A1|2017-12-01|2018-11-30|Fluid-product dispensing head|
    EP18833264.7A| EP3717134A1|2017-12-01|2018-11-30|Fluid-product dispensing head|
    BR112020009541-9A| BR112020009541A2|2016-12-02|2018-11-30|fluid dispensing head and fluid dispenser|
    CN201880077414.0A| CN111655381A|2016-12-02|2018-11-30|Fluid product dispenser head|
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