MXPA98007337A - System and method for spray tip / spray of a p - Google Patents

Abstract

The present invention relates to a nozzle mechanism for an aerosol type dispenser for distributing liquid content by application and pressure, comprising: a flexible nozzle portion having an outlet portion for distributing the liquid content, the portion of The outlet has a substantially tubular shape and has a wall thickness that decreases from a first point along an elongated shaft direction of symmetry of the nozzle mechanism toward a tip of the flexible nozzle portion; a rigid arrow received within the flexible nozzle portion and separating the outlet portion to form a normally closed first valve, the rigid and inner arrow of the flexible nozzle portion define a swirl chamber for the liquid content before ejection by means of the outlet; and a rigid housing surrounding the flexible nozzle portion and exposing the outlet portion; or in the chamber is expelled by means of the first normally closed valve upon reaching a maximum pressure sufficient to radially deform the outlet portion to open the normally closed first valve, and wherein the rigid housing prevents deformation of the outlet portion as length of the axial direction during the expulsion of the liquid content of the chamber by means of the portion of the

Description

SYSTEM AND METHOD FOR SPRAY TIP / SPRAY ONE STEP FIELD OF THE INVENTION This invention relates generally to a system and method for generating a spray and / or a discharge of the aerosol type, and relates more particularly to a system and method for generating a spray and / or a discharge of the type of aerosol. spray by means of an aerosol tip mechanism that ensures movement of a liquid passage through the aerosol tip mechanism.

BACKGROUND OF THE INVENTION In recent years, spray and / or aerosol type distributors have received attention for their use in distributing liquids, particularly medicines. A persistent problem in designing spray and / or aerosol dispensers to distribute medications is to prevent contamination of the medication that may occur when the drug that has been exposed to ambient air returns and / or remains in the aerosol outlet channel, eg, inside. of the spray nozzle. One solution to this problem is to simply add preservatives to the drug being distributed, thus preventing bacterial growth. However, this solution has obvious disadvantages, for example, added costs and toxicity of the preservatives. In order to prevent bacterial growth in the drug that does not contain preservatives at the same time allowing the distribution of multiple doses of the drug, the aerosol nozzle should prevent the drug that has previously been exposed to ambient air from being sucked into the outlet channel of spray. Another problem in designing a spray and / or aerosol dispenser to distribute medicament is to minimize the number of components that make up the spray / aerosol dispenser. As the number of components increases, the difficulty and cost of mass production increase. Accordingly, it is an object of the present invention to provide a nozzle or outlet tip mechanism for distributing liquid from a pump-type dispenser in the form of an aerosol or spray, which nozzle or tip mechanism is adapted for combination with the pump type distributor without the need for additional components for, or modification of, the pump type distributor to facilitate the combination. Another object of the present invention is to provide an outlet nozzle for an aerosol dispenser, which nozzle ensures movement of a liquid passage through the nozzle. Still another object of the present invention is to provide a method for distributing liquid through an outlet nozzle for an aerosol dispenser, which method ensures movement of a liquid passage through the nozzle. Still another object of the present invention is to provide an outlet nozzle for an aerosol dispenser, which nozzle has a "dead volume" substantially zero where the liquid that has been exposed to ambient air may remain, i.e. the liquid it is released completely once it passes through the outlet nozzle, or the combined effect of the surface tensions of the liquid and the forces of the outlet nozzle surrounding any liquid remaining from, and away from, the outlet portion. Still another object of the present invention is to provide a method to ensure that no liquid that has been exposed to ambient air returns to the inner portion of the nozzle of an aerosol dispenser. Still another object of the present invention is to provide an aerosol dispenser with a one-way nozzle, which distributor minimizes the number of parts for manufacturing. Still another object of the present invention is to provide an aerosol dispenser having a plurality of valve mechanisms in the fluid communication path between the liquid reservoir and the outlet nozzle to ensure minimization of contact between the contents of the reservoir of liquid and liquid that may have previously been exposed to ambient air. Another object of the present invention is to provide an outlet nozzle for an aerosol dispenser, which nozzle is adapted to generate a spray-type discharge by means of radial, elastic deformation on the circumference of the nozzle providing an integral spring, at same time substantially maintaining the physical profile in the direction of the longitudinal axis of the nozzle.

Another object of the present invention is to provide an aerosol type dispenser that does not require propellants such as CFCs, the release of which is harmful to the ozone layer, or the release pressure of which the propellant is temperature dependent, as well creating variations in distributed doses. Another object of the present invention is to provide a pump and nozzle system for generating an aerosol-type discharge by means of a swirl chamber by means of an integral spring effect achieved by radial, elastic deformation on the circumference of the nozzle, which spray type discharge is achieved with a minimum of "head loss".

BRIEF DESCRIPTION OF THE INVENTION In accordance with the foregoing objects, the present invention provides a nozzle mechanism for generating an aerosol-type liquid discharge, which nozzle mechanism ensures movement of a liquid passage and also has a "dead volume" substantially zero in the tip of the nozzle. The nozzle mechanism according to the present invention can be adapted for use with a variety of types of liquid dispensing devices, for example, drug dispensers that channel liquid from a liquid reservoir through the nozzle mechanism by the application of pressure by means of a pump mechanism.

In one embodiment of the nozzle mechanism according to the present invention, the nozzle mechanism includes a flexible nozzle portion with an outlet and a fluid channel, a rigid arrow received within the flexible nozzle portion, and a rigid housing that surrounds the flexible nozzle portion and exposes the outlet. The rigid arrow separates the outlet to form a normally closed first circumference valve as well as to define a collection chamber, or a "swirl chamber", to temporarily collect the liquid that has been channeled from the liquid reservoir, before being downloaded by means of the output. The outlet has an elastic outer wall, the thickness of which decreases on the elongated axis of symmetry of the outlet from a lower portion of the outlet to the tip of the outlet, thus facilitating movement of a liquid passage through, and outside, the exit. In the embodiment described above, the fluid channel, which defines a portion of a fluid communication path between the liquid reservoir and the collection chamber, is positioned circumferentially within the flexible nozzle portion. The circumferentially placed fluid channel provides uniform pressure with a minimum of head loss. As a result, the liquid pressure is uniformly applied at the entry point of the vortex chamber once the pressure within the circumferentially placed fluid channel reaches a maximum pressure sufficient to radially deform a second normally closed circumferential valve that forms a portion of the fluid communication path between the liquid reservoir and the collection chamber, which second normally closed valve is described in detail below. The embodiment described before the nozzle mechanism according to the present invention can be coupled to a flexible body portion having a substantially tubular shape and wall thickness decreasing from the bottom of the body portion towards the flexible nozzle portion, on the elongated axis of symmetry of the body portion. The rigid arrow received within the flexible nozzle portions extends towards the flexible body portion so that a second portion of the rigid arrow separates the flexible body portion to form the second normally closed circumferential valve in the fluid communication path between the liquid reservoir and the collection chamber. As for the first normally closed circumferential valve, the second normally closed circumferential valve opens when the pressure in the liquid in the fluid communication path reaches a maximum pressure sufficient to radially deform the flexible body portion forming the second normally closed circumferential valve. An advantage of the nozzle mechanism according to the present invention is that the configuration of the outlet portion substantially eliminates the possibility that the liquid in the nozzle mechanism makes contact with ambient air and subsequently returns and / or remains in the inner portion. of the nozzle mechanism. The nozzle mechanism achieves this result by means of the first normally closed valve, which facilitates movement of a liquid passage from the nozzle mechanism through the outlet portion during discharge. Due to the first normally closed valve, the outlet portion has a "dead volume" substantially zero, that is, a space where the liquid that has been exposed to ambient air can remain. In addition to the first normally closed valve, the second normally closed valve placed on the fluid communication path between the liquid reservoir and the outlet adds other assurances that the liquid in the liquid reservoir will not be contaminated by liquid that has been exposed to air environment and is subsequently reintroduced into the nozzle mechanism. Since the first and second normally closed valves are placed on the fluid communication path to open asynchronously during fluid communication leading to discharge through the outlet, failure of any of the valves will not affect the integrity of the nozzle mechanism to prevent contamination of the liquid in the liquid reservoir. Another advantage of the nozzle mechanism according to the present invention is that the nozzle mechanism does not substantially suffer from deformation on the direction of the discharge path through the outlet, ie the elongated axis of symmetry for the outlet. As a result, the physical profile of the fluid channel, which induces swirling action of the liquid in the collection chamber of the nozzle mechanism, is maintained during liquid discharge. Another advantage of the nozzle mechanism according to the present invention is that the number of parts constituting the nozzle mechanism and, in turn, the distributor system including a pump mechanism in combination with the nozzle mechanism, was important way compared to conventional nozzle mechanisms. The reduced number of parts reduces costs and manufacturing complexity.

BRIEF DESCRIPTION OF THE BIRDS Figure 1 is a cross-sectional view on the length of the aerosol dispenser including one embodiment of a nozzle mechanism in accordance with the present invention. Fig. 2 is a cross-sectional view illustrating the liquid flow path through the fluid communication path between the liquid reservoir and the nozzle mechanism of the aerosol dispenser shown in Fig. 1. Figure 3 is a cross-sectional view on the line A-A shown in figure 1. Figure 4A is an enlarged cross-sectional view showing a step of deformation of a valve in the nozzle mechanism in accordance with the present invention shown in Figure 1.

Figure 4B is an enlarged cross-sectional view showing another step of deformation of the valve in the nozzle mechanism in accordance with the present invention shown in Figure 1. Figure 5A is an enlarged cross-sectional view showing a step of deformation of a valve in the body portion of the aerosol dispenser shown in FIG. 1. FIG. 5B is an enlarged cross-sectional view showing another deformation step of the valve in the body portion of the aerosol dispenser shown in FIG. Figure 1. Figure 6A is a cross-sectional view showing a second embodiment of the nozzle mechanism in accordance with the present invention. Figure 6B is a cross-sectional view on line B-B shown in Figure 6A.

DETAILED DESCRIPTION OF THE INVENTION Referring generally to FIGS. 1 and 3, an aerosol-type dispensing system including a first example embodiment of a tip mechanism or aerosol nozzle 2 according to the present invention is generally indicated at 1. The first example embodiment of the aerosol tip mechanism 2 includes a flexible nozzle portion 10 having an outlet portion 108 and a fluid channel or swirl channel 104, a rigid arrow 102 received within the flexible nozzle portion 10. , and a rigid external housing 101 surrounding the flexible nozzle portion 10 and exposing the outlet portion 108. The rigid arrow 102 separates the interior of the outlet portion 108 to form a normally closed first valve 105, as well as for defining a swirl chamber or collection chamber 103 for liquid that has been channeled from a liquid reservoir, before being discharged into the outlet portion 108 of the aerosol tip mechanism 2. As shown in Figures 1 and 3, the first example embodiment of the aerosol tip mechanism, the swirl channel or fluid channel 104 includes cavities between walls 1021 a and 1021 b circumferentially surrounding the fl rigid casing 102. Swirl channel 104, which is described in detail below, channels fluid in swirl chamber 103. A second example embodiment of the tip mechanism or aerosol nozzle 2 in accordance with the present invention is shown in Figures 6A and 6B. The second example mode is substantially similar to the first example mode, with one exception. In contrast to the first example embodiment shown in Figures 1 and 3, the second exemplary embodiment of the tip mechanism or aerosol nozzle does not include walls 1021 a and 1021 b circumferentially surrounding the rigid arrow 102. Accordingly, in the second embodiment shown in Figures 6A and 6B, the swirl channel 104 is simply an integral part of the swirl chamber 103.

As shown in Figure 1, the first example embodiment of the tip mechanism or aerosol nozzle 2 according to the present invention is coupled to a flexible body portion 107 having a substantially tubular shape and a wall thickness which reduces from the bottom of the body portion towards the flexible nozzle portion 10, on the elongated axis of symmetry of the body portion. The rigid arrow 102 received within the flexible nozzle portion 10 extends to the flexible body portion 107 so that a second portion 102 of the rigid arrow separates the flexible body portion 107 to form a second normally closed valve 106. Referring generally to Figures 1 and 2, the fluid communication path 201 of liquid from the liquid reservoir to the outlet portion 108 successively passes the first and second normally closed valves 105 and 106, respectively. A pump mechanism 1 10 of the distributor system 1, which acts in accordance with a pump body portion 11 1 of the dispensing system, channels the liquid from the liquid reservoir onto the fluid communication path 201 by application of pressure. It should be noted that the nozzle mechanism in accordance with the present invention should be used in conjunction with a wide variety of liquid dispensing systems, an example of which is illustrated in the patent application of E.U.A. commonly of applicant Serial Number 08 / 534,609, filed September 27, 1995, entitled "Fluid Pump Without Dead Volume", which is expressly incorporated by reference herein. Accordingly, it should be understood that the pump mechanism 110 and the pump body portion 1 1 of the dispensing system shown in Figures 1 and 2 are merely examples and a generic representation of a wide variety of distributor systems. As shown in Figures 1 and 2, the liquid from the liquid reservoir is initially channeled through a circumferential groove or channel 109 formed on the outside of the second portion 102a of the rigid arrow. Once the pressure in the liquid in the fluid communication path reaches a maximum pressure sufficient to radially deform the flexible body portion 107, a portion 501 of the flexible body portion 107 that forms a lower segment of the second valve is normally closed 106 is radially deformed by the liquid, thus opening the second normally closed valve 106, as shown in Figure 5A. As the liquid passes through the second normally closed valve 106 towards the flexible nozzle portion 10, segments in sequence are flexibly deformed from the flexible body portion 107 forming the second normally closed valve 106, as shown in FIGS. 5A and 5B, until the liquid finally passes through the upper segment 502 of the flexible body portion 107 forming the second normally closed valve 106. As shown in Figures 5A and 5B, since the wall thickness of the flexible body portion 107 decreases from the lower segment 501 to the upper segment 502 of the second normally closed valve 106, ie, on the elongated axis of symmetry S of the nozzle mechanism, the lower segment 501 of the valve 106 closes substantially for when the liquid has reached the upper segment 502. Since the energy required to open the lower segment 501 of the valve 106 is greater than the energy required to open the upper segment 502, the liquid deviates naturally to maintain its forward movement through the second valve 106 in the flexible body portion 107 once the lower segment 501 has been opened. In this manner, the second normally closed valve 106 ensures liquid movement only in the direction towards the flexible nozzle portion 10. Once the liquid in the fluid communication path 201 has passed through the second normally closed valve 106, the liquid then enters the channel fluid 104 within the flexible nozzle portion 10 of the first embodiment of the aerosol tip mechanism 2, as shown in Figures 1, 2 and 3. The fluid channel 104, which defines a portion of the fluid communication path 201 between the liquid reservoir and the collection chamber 103, it is positioned circumferentially within the flexible nozzle portion, as shown in Figure 3. The circumferentially placed fluid channel 104 creates swirl action of liquid, indicated in Figure 3 by the direction arrow 301, as it is channeled into the swirl chamber 103. For the second embodiment of the aerosol tip mechanism shown in Figures 6A and 6Br the liquid enters directly into the swirl chamber 103 through space 601 once the liquid in the path of fluid communication 201 has traversed the second normally closed valve 106. The swirling action of the liquid is maintained in the swirl chamber until the liquid is discharged by means of the outlet portion 108, the mechanics of which discharge action is described in detail later. Referring generally to Figures 1, 4A and 4B, the liquid in the swirl chamber is discharged by means of the outlet portion 108 when the pressure of the liquid reaches a maximum pressure sufficient to radially deform the outlet portion 108 that the first normally closed valve 105 forms. As for the second normally closed valve 106 described above, the movement of liquid through the normally closed first valve 105 involves deformation in sequence of segments of the outlet portion 108. As shown in FIG. 4A, a portion 401 of the outlet portion 108 forming a lower segment of the first normally closed valve 105 is radially deformed by the liquid, thus opening the first normally closed valve 105. As the liquid passes through the the first normally closed valve 105 towards the tip of the outlet portion 108, segments are deformed radially in sequence of the outlet portion 108 forming the first normally closed valve 105, as shown in Figures 4A and 4B, until the liquid finally passes through the upper segment 402 of the outlet portion 108 forming the first valve normally closed 105. As shown in Figs. 1, 4A and 4B, the wall thickness of the outlet portion 108 decreases from the lower segment 401 towards the upper segment 402 of the first normally closed valve 105, ie, on the elongate axis of the valve. S symmetry of tip mechanism or spray nozzle. Due to this stable reduction in the wall thickness, the lower segment 401 of the valve 105 closes substantially for when the liquid has reached the upper segment 402, as shown in Figures 4A and 4B. Since the energy required to open the lower segment 401 of the valve 105 is greater than the energy required to open the upper segment 402, the liquid deviates naturally to maintain its forward movement through the first valve 105 in the portion of outlet 108 once the lower segment 401 has been opened. Accordingly, the valve 105 ensures fluid movement only in the direction toward the external tip of the nozzle portion 10. During the discharge of liquid through the portion of departure 108, the single segment of the flexible nozzle portion 10 that undergoes deformation on the elongated axis of symmetry S of the tip mechanism or aerosol nozzle is the outlet portion 108. The remaining segments of the flexible nozzle portion are prevented by the rigid housing 101 of deformation on the elongated axis of symmetry S. Even the outlet portion 108 undergoes minimal deformation only on the axis S; the important deformation is on the radial direction. In addition, the outlet portion 108 does not exert a force on the axis S on the rigid arrow 102, that is, the exit portion 108 does not rub the rigid arrow during opening or closing of the first valve 105. Therefore, due to the absence of any rubbing contact between the outlet portion 108 and the rigid arrow 102, the opportunities for contaminants to enter the swirl chamber 103 are minimized. An advantage of the tip mechanism or aerosol nozzle in accordance with the present invention is the prevention described before axial deformation of the flexible nozzle portion 10 by the rigid housing 101. Since the flexible nozzle portion 10, with the exception of the outlet portion 108, does not suffer substantially deformation on the shaft elongate of symmetry S shown in Figure 4A, the physical profile of the fluid channel 104, which induces swirling action of the channeled liquid in the swirl chamber 103, is ntiene during the discharge of liquid. An axial deformation of the flexible nozzle portion 10 on the liquid discharge direction would deform the fluid channel 104, which in turn would prevent the swirling action from occurring. In the embodiment described before the tip mechanism or aerosol nozzle according to the present invention, the flexible nozzle portion 10, the flexible body portion 107 and the pump body portion 111 can be made from any of several well-known materials. in the art, including polyethylene butadiene styrene (KRATON ™), polyethylene, polyurethane, or other plastic materials, thermoplastic elastomers or other elastic materials. KRATON ™ is particularly well suited for this purpose due to its characteristic resistance to permanent deformation, or "creep", which typically occurs over time.

Another advantage of the tip mechanism or aerosol nozzle in accordance with the present invention is that the number of parts constituting the nozzle mechanism and, in turn, the distributor system including a pump mechanism in combination with the nozzle mechanism , it is reduced significantly compared to conventional nozzle mechanisms. As can be seen from FIG. 1, an aerosol-type dispensing system incorporating the nozzle mechanism according to the present invention can be made by using only three discrete parts: the rigid housing 101; an integral flexible piece encompassing the flexible nozzle portion 10, the flexible body portion 107 and the pump body portion 111; and the rigid arrow 102 formed integrally with the pump mechanism 110. Since only three discrete parts are required, the cost and complexity of manufacturing an aerosot type dispensing system are greatly reduced. Yet another advantage of the tip mechanism or aerosol nozzle in accordance with the present invention is that the first valve of a normally closed passage 105 with its wall thickness decreasing from the outlet portion 108 substantially eliminates the possibility that the liquid in the nozzle mechanism contacts ambient air and subsequently returns to the inner portion of the nozzle mechanism. Due to the decreasing wall thickness of the outlet portion 108, the liquid deviates naturally to maintain its forward movement through the first valve 105 in the outlet portion 108 once the base portion has been opened. Thickness of the valve. Therefore, the outlet portion 108 has a "dead volume" substantially zero, that is, a space where the liquid that has previously been exposed to ambient air can remain. Yet another advantage of the tip mechanism or aerosol nozzle in accordance with the present invention is that the outlet portion 108 does not rub against the rigid arrow 102 during opening or closing of the first valve 105. Therefore, due to the absence of any rubbing contact between the outlet portion 108 and the rigid arrow 102, the opportunities for contaminants to enter the swirl chamber 103 are minimized. Still another advantage of the tip mechanism or aerosol nozzle in accordance with the present invention is that the presence of multiple valves on which leads to the outlet portion 108. In addition to the first valve normally closed, the second valve normally closed placed on the between the liquid tank and the outlet adds more securities than the liquid in the liquid reservoir will not be contaminated by liquid that could have been accidentally exposed to ambient air and that will be returned to Subsequently introduce in the boquitla mechanism. Since the first and second normally closed valves are placed on top of the one to open in sequence, and thus asynchronously, during the fluid communication leading to the discharge through the outlet, the failure of any of the valves will not affect The integrity of the nozzle mechanism to prevent contamination of liquid in the liquid reservoir. Although specific embodiments have been described above, it should be apparent to those skilled in the art that the embodiments described above are examples in nature since certain changes can be made thereto without departing from the teachings of the invention, and the example modalities they should not be considered as a limitation on the scope of protection for the invention as set forth in the appended claims. For example, although the exemplary embodiment of the tip mechanism or aerosol nozzle in accordance with the present invention has been described as having an outlet portion in tubular form, other shapes, for example, square or rectangular, can be used to the exit portion.

Claims (28)

1. CLAIMS 1 .- A nozzle mechanism for an aerosol-type dispenser for distributing liquid content by application of pressure, comprising: a flexible nozzle portion having an outlet portion for distributing said liquid content, said exit portion having a substantially tubular shape and having a wall thickness that decreases from a first point over an elongated axis direction of symmetry of said nozzle mechanism toward a tip of the flexible nozzle portion; a rigid arrow received within the flexible nozzle portion and separating said outlet portion to form a normally closed first valve, said rigid and inner arrow of said flexible nozzle portion defining a swirl chamber for said liquid content prior to the expulsion by means of said exit; and a rigid housing surrounding said flexible nozzle portion and exposing said outlet portion; wherein said liquid in said chamber is ejected by means of said first normally closed valve upon reaching a maximum pressure sufficient to radially deform said outlet portion to open said normally closed first valve, and wherein said rigid housing prevents deformation of said portion of said chamber. outlet on said axial direction during the ejection of said liquid content from said chamber by means of said outlet portion.
2. 2 - The system according to claim 1, wherein said distributor is in fluid communication with a liquid reservoir, and wherein said flexible nozzle portion further comprises a fluid channel defining a portion of a fluid communication path between said liquid reservoir and said swirl chamber, said channel which induces swirling action of assorted liquid to said swirl chamber.
3. 3. The system according to claim 2, wherein said fluid channel is placed circumferentially in said flexible nozzle portion.
4. 4. The system according to claim 2, wherein said rigid housing further prevents axial deformation of said fluid channel.
5. 5. The system according to claim 3, wherein said rigid housing further prevents axial deformation of said fluid channel.
6. 6. The system according to claim 1, wherein said radial deformation of said outlet portion for opening said normally closed first valve comprises sequential deformation of portions of said outlet portion separating said rigid arrow on the axial direction, whereby an initial point of separation on the axial direction between said outlet portion and said rigid arrow is substantially closed when an end point of separation is opened over the axial direction between said axial portion and said rigid arrow.
7. 7. The system according to claim 2, wherein said radial deformation of said outlet portion for opening said normally closed first valve comprises sequential deformation of portions of said outlet portion separating said rigid arrow on the axial direction, whereby an initial point of separation about the axial direction between said outlet portion and said rigid arrow is substantially closed when an end point of separation is opened over the axial direction between said outlet portion and said rigid arrow.
8. 8. The system according to claim 7, wherein said fluid channel is positioned circumferentially in said flexible nozzle portion.
9. 9. The system according to claim 8, wherein said rigid housing further prevents axial deformation of said fluid channel.
10. 10. The system according to claim 7, wherein said rigid housing further prevents axial deformation of said fluid channel.
11. 11 .- A fluid distributor mechanism for an aerosol type distributor in fluid communication with a liquid reservoir, which comprises: a flexible nozzle portion having an outlet portion for distributing said liquid content from said distributor, said outlet portion having a substantially tubular shape and having a wall thickness that decreases from a first point on an elongated axis direction of symmetry of said nozzle mechanism toward a tip of the flexible nozzle portion; a flexible body portion connected to said flexible nozzle portion, said body portion having a substantially tubular shape and a wall thickness decreasing from a second point over said axial direction towards said tip of said flexible nozzle portion; a rigid arrow member received within said flexible nozzle portion and said flexible body portion, a first portion of said flexible arrow member separating said exit portion to form a normally closed first valve, said first portion of said rigid arrow and interior of said flexible nozzle portion defining a swirl chamber for collecting liquid from said liquid reservoir prior to ejection by means of said outlet portion, a second portion of said rigid arrow member separating said portion from said liquid portion. flexible body to form a second valve normally closed; and a rigid housing surrounding said flexible nozzle portion and said flexible body portion and exposing said exit portion; wherein a content of said fluid reservoir is channeled into said vortex chamber from said liquid reservoir by means of said second valve normally closed during the application of sufficient pressure to open said second valve normally closed, and wherein said liquid in said chamber is expelled by means of said first normally closed valve upon reaching a sufficient pressure to radially deform said outlet portion to open said normally closed first valve, and wherein said rigid housing prevents deformation of said outlet portion on said axial direction during ejection of said liquid content from said swirl chamber by means of said outlet portion.
12. 12. The system according to claim 11, wherein said flexible nozzle portion further comprises a fluid channel defining a portion of a fluid communication path between said liquid reservoir and said swirl chamber, said fluid channel which induces swirling action of assorted liquid to said swirl chamber.
13. 13. The system according to claim 12, wherein said fluid channel is placed circumferentially in said flexible nozzle portion.
14. 14. The system according to claim 12, wherein said rigid housing further prevents axial deformation of said fluid channel.
15. 15. The system according to claim 13, wherein said rigid housing further prevents axial deformation of said fluid channel.
16. 16. The system according to claim 1, wherein said radial deformation of said outlet portion to open said normally closed first valve comprises sequential deformation of portions of said outlet portion separating said first portion of said valve member. rigid arrow on the axial direction, whereby an initial point of separation on the axial direction between said outlet portion and said first portion of said rigid arrow member is substantially closed when a separation end point is opened over the axial direction between said outlet portion and said first portion of said rigid arrow member.
17. 17. The system according to claim 16, wherein said second valve normally closed is opened by applying sufficient pressure to radially deform said flexible body portion separating said second portion of said rigid arrow member, and wherein said deformation The radial portion of said flexible body portion comprises sequential deformation of portions of said flexible body portion separating said second portion of said rigid arrow member, so that an initial point of separation between said flexible body portion and said second portion of said flexible body portion. said rigid arrow member in the axial direction and away from said swirl chamber is substantially closed when a final point of separation is opened between said flexible body portion and said second portion of said rigid arrow member on the axial direction and close to said swirl chamber.
18. 18. The system according to claim 17, wherein said first and second normally closed valves are opened asynchronously.
19. 19. - The system according to claim 12, wherein said radial deformation of said outlet portion for opening said normally closed first valve comprises sequential deformation of portions of said outlet portion separating said first portion of said rigid arrow member on the axial direction, whereby an initial point of separation over the axial direction between said outlet portion and said first portion of said rigid arrow member substantially closes when a separation end point is opened over the axial direction between said portion of outlet and said first portion of said rigid arrow member.
20. 20. The system according to claim 19, wherein said second valve normally closed is opened by applying sufficient pressure to radially deform said flexible body portion separating said second portion of said rigid arrow member, and wherein said deformation The radial portion of said flexible body portion comprises sequential deformation of portions of said flexible body portion separating said second portion of said rigid arrow member, whereby an initial point of separation between said flexible body portion and said second portion of said flexible body portion. said rigid arrow member in the axial direction and away from said swirl chamber is substantially closed when a final point of separation between said flexible body portion and said second portion of said rigid arrow member is opened in the axial direction and close to said swirl chamber.
21. 21. - The system according to claim 20, wherein said first and second normally closed valves are opened asynchronously.
22. 22. The system according to claim 21, wherein said fluid channel is positioned circumferentially in said flexible nozzle portion.
23. 23. The system according to claim 22, wherein said rigid housing further prevents axial deformation of the fluid channel.
24. 24. The system according to claim 19, wherein said fluid channel is placed circumferentially in said flexible nozzle portion.
25. 25. The system according to claim 24, wherein said rigid housing further prevents axial deformation of the fluid channel.
26. 26. A method for generating a fluid aerosol discharge from a distributor in fluid communication with a liquid reservoir, said dispenser comprising a flexible nozzle portion having an outlet portion for distributing said liquid content, said outlet portion having a wall thickness decreasing from a first point on an elongated axis direction of symmetry of said nozzle mechanism towards a tip of the flexible nozzle portion, a first portion of a rigid arrow member received within the flexible nozzle portion and separating said outlet portion to form a normally closed first valve, said first portion of said rigid and inner arrow member of said flexible nozzle portion defining a swirl chamber for said liquid content prior to the ejection by means of said outlet, said flexible nozzle portion further comprising a circumferentially positioned fluid channel defining a portion of a fluid communication path between said liquid reservoir and said swirl chamber, and a rigid housing surrounding said flexible nozzle portion and exposing said outlet portion, which method comprises: channeling liquid content of said liquid reservoir into said fluid communication path by the application of pressure; channeling said liquid content in said swirl chamber by means of said fluid channel positioned circumferentially by the application of pressure, thus creating swirling of said liquid content in said swirl chamber; and ejecting said liquid content from said swirl chamber through said outlet by means of said first valve normally closed by applying sufficient pressure to radially deform said outlet portion to open said normally closed valve at the same time substantially avoiding the deformation of said outlet portion on the axial direction by relative impulse of said rigid housing; wherein said radial deformation of said outlet portion for opening said normally closed first valve comprises sequential deformation of portions of said outlet portion separating said first portion of said rigid arrow member on the axial direction, so that an initial point of separation on the axial direction between said outlet portion and said first portion of said rigid arrow member is substantially closed when an end point of separation is opened over the axial direction between said exit portion and said first portion of said arrow member rigid.
27. 27. The method according to claim 26, wherein said distributor further comprises a flexible body portion connected to said flexible nozzle portion, said body portion having a wall thickness that decreases from a second point over a direction axial to said tip of said flexible nozzle portion, and wherein said rigid arrow member further comprises a second portion separating said flexible body portion to form a second valve normally closed in said fluid communication path, which method further comprises , before the step of channeling said liquid content in said vortex chamber by means of said circumferentially placed fluid channel, the step of: channeling said liquid content through said second normally closed valve in said placed fluid channel circumferentially by the application of pressure to deform radially d a flexible body portion separating said second portion of said rigid arrow member to open said second normally closed valve, wherein said radial deformation of said flexible body portion comprises sequential deformation of portions of said flexible body portion separating said flexible body portion; second portion of said rigid arrow member, whereby an initial point of separation between said flexible body portion and said second portion of said rigid arrow member on the axial direction and shingles of said circumferentially placed fluid channel is closed substantially when an end point of separation between said flexible body portion and said second portion of said rigid arrow member is opened in the axial direction and close to said circumferentially placed fluid channel.
28. 28. The method according to claim 27, wherein said first and second normally closed valves are opened asynchronously. SUMMARY A nozzle mechanism is provided to generate an aerosol-type liquid discharge, which nozzle mechanism ensures movement of a liquid passage during discharge and also has a "dead volume" substantially zero at the tip of the nozzle. The nozzle mechanism includes a flexible nozzle portion with an outlet and a fluid channel, a rigid arrow received within the flexible nozzle portion, and a rigid housing that surrounds the flexible nozzle portion and exposes the outlet. The rigid arrow separates the outlet to form a first valve of a normally closed passage, as well as to define a swirl chamber to collect the liquid that has been channeled from the liquid reservoir, before being discharged through the outlet. The outlet has a tubular wall with thickness that decreases on the elongated axis of symmetry for the exit towards the tip of the exit. The fluid channel is positioned circumferentially within the flexible nozzle portion to create swirling action of the liquid filled to said swirl chamber. Once the pressure in the swirling liquid reaches a maximum pressure sufficient to radially deform the portion of the outlet forming the first normally closed valve, the liquid in the swirl chamber is discharged through the outlet. The nozzle mechanism is coupled to a flexible body portion having a substantially tubular shape and a wall thickness that decreases from the bottom of the body portion toward the flexible nozzle portion. The rigid arrow received within the flexible nozzle portions extends to the flexible body portion so that a second portion of the rigid arrow separates the flexible body portion to form a second valve of a normally closed passage in the communication path fluid between the liquid reservoir and the swirl chamber.