Classifications

• • 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
  • B65D83/70—Pressure relief devices
• • 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
  • B65D83/44—Valves specially adapted therefor; Regulating devices
  • B65D83/48—Lift valves, e.g. operated by push action
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
  • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
  • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
• • 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
  • B65D2313/00—Connecting or fastening means

Definitions

• the present invention relates to pressure vessels capable of containing a fluid, and more particularly the means for closing such pressure vessels.
• the known pressure vessels are of the aerosol type.
• An aerosol is a set of particles, solid or liquid, of a given chemical substance suspended in a gaseous medium.
• aerosol also refers to the container containing a mixture of a product and a propellant.
• the propellant creates a pressure inside the container. By opening an outlet valve, the mixture is expelled outside the pressure vessel.
• the product is sprayed in aerosol form, that is to say in fine particles suspended in the air.
• the propellant is usually nitrogen, because it is an inert gas and therefore less dangerous than propane, butane or other flammable hydrocarbons that have no effect on the ozone layer.
• a known aerosol container includes a bottom, a side wall and a neck, and is usually made of aluminum.
• the thickness of the container is designed to hold up to 18 bar pressure inside.
• aerosol containers having different capacities.
• Aerosols that is, pressure vessels with a non-removable dispensing valve
• the dispensing valves are not removable and they do not allow to effectively measure the flow of product leaving the pressure vessel.
• the internal pressure allowed by the standards is limited to 12 bar at 50 ° C.
• the filling of known aerosols is limited by strict standards to 66% of the volume which itself is one liter at most.
• the known aerosols work only when they contain a non-granular fluid, otherwise the dispensing valve clogs and the aerosols can no longer dispense fluid.
• a first problem proposed by the present invention is to design a closure means for a pressure vessel capable of containing a fluid, which can be dismantled, which makes it possible to dose the outgoing product, and whose safety of use is ensured up to pressures of more than 20 bar.
• the idea underlying the invention is to design a reliable dismountable measuring cap, and to use it in combination with a container containing a fluid under a pressure much higher than the pressures usually allowed for aerosols, for example from the order of 30 bars.
• a dosing cap for pressure vessel adapted to contain a fluid
• the container comprising a bottom, a substantially cylindrical side wall that tapers to a neck having a front neck face and an inner neck edge, comprising:
• a body with a longitudinal axis having:
• a penetrating part which is shaped to penetrate into the neck of the container, and which comprises a radial peripheral protuberance able to engage in abutment against the inner collar edge
• Such a measuring cap is removable.
• the container that closes can be easily reused which reduces the amount of waste produced.
• Such a measuring cap is therefore ecological.
• Such a dosing cap does not include a valve.
• the pressure vessel provided with such a removable dosing cap is not constrained by the strict standards of aerosols, nor by other rules if the volume of the container is less than one liter and if the product pressure per volume is lower at 50 Lbar.
• This dosing cap is simple in design, it includes only three main elements that can be preassembled, then a fourth element to assemble to assemble the dosing cap to the pressure vessel, so it is also easy to use.
• Such a measuring cap is compatible with conventional aerosol container bodies, so that it is possible to take advantage of the low cost of these containers produced in large series.
• the radial peripheral protrusion comprises a frustoconical portion whose cone angle substantially corresponds to the inclination of the inner collar edge of the container.
• the penetrating portion comprises at least one recessed side face defining a width smaller than the diameter of the neck of the container.
• said at least one lateral face is positioned so that it allows a slight local deformation of the neck which generates a leakage beyond a predetermined pressure inside the container.
• the measuring cap is made of metal or plastic.
• the use of plastic material makes it possible to reduce the manufacturing costs of the measuring cap because the plastic material is less expensive than the metal.
• the metal will have better mechanical strength.
• the metal is stainless steel or an aluminum alloy.
• the assembly ring is fixed to the body by screwing, pressing or pinning.
• the penetrating part of the body comprises two lateral plates on either side of the longitudinal axis of the body.
• One of these two dishes realizing the side face.
• the assembly ring has a peripheral skirt surrounding the neck of the container leaving a trailing space between its extreme edge and the peripheral wall of the container.
• the assembly ring By surrounding the neck of the container, the assembly ring also performs the function of reinforcing the neck, opposing the action of the internal pressure of the container which tends to widen the neck.
• the closure member prefferably be a rod slidably mounted in the axial fluid passage between a closed position and an open position, and comprises two annular grooves. able to receive annular sealing joints.
• the stroke of the shutter element is limited between two predefined positions. This avoids any risk of the shutter element coming out of the axial passage of the fluid.
• the closure member is a needle screw that is actuated by screwing or unscrewing into the body.
• the penetration of the needle screw into the body is precisely selected by a user by screwing or unscrewing more or less the needle screw. And this structure is well suited to applications in which the fluid contains solid powders or suspensions.
• the closure member further comprises a closure element positioned in the axial passage of fluid to near the neck of the container and held away from it by a spring or by the internal pressure of the container.
• the closure element performs a dual function, namely the fill valve function and the safety element function.
• the invention provides a container adapted to contain a fluid under pressure, closed by a measuring cap according to the first aspect of the invention, and having an initial internal pressure greater than 20 bar.
• Such a container is not required to meet aerosol standards because it does not include a fixed valve and the cap is removable.
• FIG. 1 is a longitudinal sectional view of a pressure vessel provided with a measuring cap according to a first embodiment of the invention
• FIG. 2 is an exploded view of the elements to be assembled to achieve the measuring cap of Figure 1;
• FIG. 3 is a side view of the body of the measuring cap of FIG. 1 in a state penetrated into the neck of the container;
• FIG. 4 is an enlarged longitudinal sectional view of the measuring cap of FIG. 1;
• FIG. 5 is a longitudinal sectional view of the measuring cap of Figure 1 in a closed position
• FIG. 6 is a longitudinal sectional view of an enlargement at the annular groove of the measuring cap of Figure 1 in an intermediate position;
• FIG. 7 is a longitudinal sectional view of the plug of Figure 1 in an open position
• FIGS. 8 and 9 are views in longitudinal section of a pressure vessel provided with a measuring cap according to a second embodiment
• FIGS. 10 and 11 are views in longitudinal section of a pressure vessel provided with a measuring cap according to a third embodiment.
• FIGS 1 to 7 illustrate a first embodiment of the invention, wherein a measuring cap 1 is assembled by screwing to a container 2 under pressure.
• the numerical references therefore refer to the same elements in all these figures.
• FIG. 1 illustrates the container 2 closed by the measuring cap 1.
• the container 2 comprises a bottom 3, a cylindrical side wall 4 which narrows towards a neck 5. The narrowing is provided at an angle of inclination ⁇ .
• the neck 5 is made by folding outwardly on itself the material constituting the container 2.
• the neck 5 comprises a front face of the neck 6 and a lower edge of the neck 7.
• the container 2 is intended to contain a fluid under pressure.
• FIG. 4 is illustrated which more precisely illustrates in section the constituent elements of the measuring cap 1.
• the measuring cap 1 comprises a body 8 with a longitudinal axis I-I, a seal 15, an assembly ring 16, a closure member 17, and an operating member 18.
• the body 8 comprises a penetrating portion 9 and an emerging portion 11 which meet in a sealing shoulder 14 facing the emergent portion 1 January.
• the penetrating portion 9 includes a substantially cylindrical distal portion and a proximal radial peripheral outgrowth.
• the radial peripheral protrusion 10 comprises a frustoconical portion 10a (FIG. 2) of cone angle a.
• the cone angle a is intended to correspond with the angle of inclination ⁇ so as to distribute the mechanical stresses of the measuring cap 1 on the container 2.
• the penetrating portion 9 comprises two lateral plates 19a and 19b ( Figures 2 and 3) on either side of the longitudinal axis II of the body 8. These two side plates 19a and 19b ( Figures 2 and 3), parallel to the longitudinal axis II, are provided to allow the introduction of the penetrating portion 9 of the body 8 in the container 2 by the neck 5.
• the width 190 of the penetrating portion 9 at the two side plates 19a and 19b is designed to be smaller than the diameter D of the neck 5 of the container 2.
• the penetrating portion 9 of the body 8 may comprise non-parallel, non-symmetrical lateral faces or even a single lateral face. The essential is to allow penetration of the penetrating portion 9 in the neck 5 and a sufficient range for the seal 15.
• the emergent portion 11 comprises an axial through-passing fluid passage 12, a fluid outlet passage 13, and a threaded portion 11a on its outer surface in the vicinity of the sealing shoulder 14.
• the fluid outlet passage 13 and the axial passage of fluid 12 communicate with each other for allow, once the measuring cap 1 assembled to the container 2, the flow of the product contained in the container 2.
• the seal 15 is annular and is shaped to bear on the sealing shoulder 14 and on the front face of the neck 6.
• the assembly ring 16 comprises a substantially cylindrical portion 25 having a threaded through opening 24, and a peripheral skirt 20.
• the thread of the threaded through opening 24 of the assembly ring 16 is provided to correspond to the threaded portion thread. 1 1 a of the emerging part 1 1.
• the closure member 17 is able to close and selectively open the fluid outlet passage 13. It is controlled by an operating member 18 accessible on the emergent part 1 1 of the body 8.
• the closure member 17 is a rod comprising two annular grooves 22a and 22b of frustoconical profile and offset longitudinally from one another at a spacing greater than the axial distance between the fluid outlet passage 13 and the intermediate shoulder 30 ( Figure 4).
• Each annular groove 22a and 22b is provided with a seal, respectively 23a and 23b.
• Each sealing gasket 23a and 23b may advantageously be made of elastomer and of cylindrical tubular shape with circular section of constant thickness.
• the upstream annular groove 22a has a depth which is reduced in the direction of the upstream orifice 12a.
• the closure member 17 comprises an intermediate portion 170 situated between the two annular grooves 22a and 22b and which is cylindrical in the embodiment of FIGS. 1 to 7.
• This intermediate portion 170 could, however, be frustoconical, or more widely of all shape to be determined according to the particle size of the fluid to be dispensed.
• FIGS. 5 to 7 illustrate the sliding of the closure member 17 in the axial fluid passage 12.
• FIG. 5 illustrates the measuring cap 1 in a closing position P1 in which the product contained in the receptacle 2 can not be expelled towards the outside of the receptacle 2: the upstream obturating seal 23a is engaged in a cylindrical section small diameter of the axial fluid passage 12, between the fluid outlet passage 13 and the intermediate shoulder 30, and it then ensures a sealing of the axial fluid passage 12.
• FIG. 6 illustrates on a larger scale the shut-off member 17 in an intermediate position P. In this intermediate position P, the upstream shut-off seal 23a is at the right of the intermediate shoulder 30, and it realizes a partial opening by allowing the pressurized fluid to pass at a rate that the user can control by axial displacement of the closure member 17.
• the frustoconical shape of the annular groove 22a gradually forces the upstream closure seal 23a, which allows a gradual opening.
• FIG. 7 illustrates the measuring cap 1 in an opening position P2, in which the product contained in the receptacle 2 is expelled towards the outside of the receptacle 2.
• Figure 7 illustrates the elements in the opening position P2 in which the fluid is expelled.
• the closure member 17 is lowered sufficiently to break the seal at the upstream seal 23a.
• the fluid is thus expelled in a controlled manner to the outside through the axial fluid passage 12 and then through the outlet passage 13.
• the second seal 23b seals to prevent a quantity of fluid can not be extracted to the operating organ 18.
• the operating member 18 is a cap provided with a threaded bore 18a for fixing it by screwing onto the threaded distal end 17a of the closure member 17. Alternatively, the operating member 18 may be fixed by clipping, crimping, hooping or gluing.
• the elastic means 17b is however not essential, and it can be considered that the pressure inside the container 2 is sufficient to allow the sliding of the closure member 17 to the position P1 shutter with the appropriate dispensing fluids.
• FIG. 2 makes it possible to explain the assembly order of these elements in order to produce the measuring cap 1.
• the seal 15 is disposed on the inside of the assembly ring 16 so that once assembled, the seal 15 seals at the neck 5 of the container 2. It rises sliding the shutter member 17 without the operating member 18 in the axial fluid passage 12 by engaging it through the upstream orifice 12a.
• the closure joints 23a and 23b have previously been mounted in the respective annular grooves 22a and 22b provided in the closure member 17.
• the assembly ring 16 provided with the seal 15 is engaged on the body 8.
• the closure member 18 is screwed onto the distal end 17a of the closure member 17, by blocking the closure member in rotation by engaging a screwdriver in a slot 17c provided at the proximal end. of the shutter member 17.
• any other locking means can be provided, and the slot 17c can have any other profile.
• the measuring cap 1 is positioned so that the radial peripheral protrusion 10 engages against the inside collar edge 7.
• the assembly ring 16 is screwed onto the threaded part of the emergent part 1 1 of the body 8.
• the assembly ring 16 axially clamps the first seal 15 against the front face of the neck 6 and against the sealing shoulder 14.
• the assembly of the measuring cap 1 with the container 2 is made.
• the peripheral skirt 20 surrounds the neck 5 of the container 2 leaving a leakage space E between its end edge 21 and the peripheral wall 4 of the container 2.
• the invention also ensures the safety of the users, by a safety leak when a predetermined maximum pressure is reached inside the container 2.
• the side plates 19a and 19b are positioned recessed so that they allow a slight local deformation of the neck 5 realizing a zone of less resistance.
• the neck 5 is deformed outwards and the seal 5 is less crushed, which generates a safety leak.
• This first embodiment is more particularly suitable for fluids whose particle size is less than 500 ⁇ .
• Figures 8 and 9 illustrate a second embodiment of the present invention, wherein the container 2 ( Figure 1) is closed by the measuring cap 100. As in the first embodiment, the measuring cap 100 is assembled to the container 2 by screwing.
• the measuring cap 100 comprises a body 80 with a longitudinal axis II-II, a seal 15, an assembly ring 16, a shutter element 40.
• the main difference between the first and the second embodiment lies in the fact that in the second embodiment the shutter member 41 and the operating member 42 are in one piece and realize the shutter member 40.
• the operating member 42 may be an insert by gluing, clipping, shrinking or screwing.
• the axial fluid passage 12 comprises a threaded upper portion 12b, a lower shoulder 43 and an intermediate shoulder 44a.
• the lower shoulder 43 is disposed at an intermediate position between the fluid outlet passage 13 and the upstream orifice 12a of the axial fluid passage 12.
• the shutter element 40 is able to shut off and selectively open the fluid outlet passage 13. It is directly controlled by an action of a user on the operating member 42 accessible on the emergent part 11 of the body 80.
• the shutter member 41 is a rod comprising four sections.
• a first section 41 a upper is partially threaded in its near part of the operating member 42.
• a second section 41 ba a reduced diameter and comprises an annular groove 45 frustoconical double profile.
• the annular groove 45 may however have any other shape producing a bulge, for example a spherical profile.
• the first section 41a and the second section 41b are joined by a shoulder 44a.
• the third section 41c has a frustoconical profile and joins the fourth section 41 d in tip which terminates the rod.
• the annular groove 45 is provided with a closure seal 46.
• the closure seal 46 may advantageously be made of elastomer and of cylindrical tubular shape with circular section of constant thickness.
• the annular groove 45 has a depth which increases towards the upstream orifice 12a.
• the measuring cap 100 further comprises a closure element such as a ball 47, engaged in axial displacement in the axial fluid passage 12, and held in position by a conical spring 48.
• a closure element such as a ball 47, engaged in axial displacement in the axial fluid passage 12, and held in position by a conical spring 48.
• the diameter of the ball 47 is chosen sufficient not to penetrate the container 2, and sufficient to create the seal when the ball 47 is in contact with the lower shoulder 43.
• the spring could be straight and resting on the plunger tube 49 (FIGS. 8 to 11), the inside diameter of which is smaller than that of the ball 47.
• the measuring cap 100 In the position illustrated in FIG. 9, the measuring cap 100 is in a closed position in which the product contained in the container 2 can not be expelled outwards. of the container 2.
• the fourth section 41 d at the tip of the closure member 41 cooperates with a narrowing 50 of the axial fluid passage 12, upstream of the fluid outlet passage 13.
• the narrowing 50 forms a seat against which can bring the fourth section 41 d, then ensuring sealing of the axial fluid passage 12.
• the fourth section 41 d When the closure member 41 is in an intermediate position, the fourth section 41 d in point no longer cooperates with the constriction 50 of the axial fluid passage 12. Thus, a partial opening is made which passes the fluid under pressure according to a flow rate that the user can control by axial displacement of the shutter member 41 by more or less unscrewing the shutter member 40.
• the pointed shape of the fourth section 41 d allows a gradual opening.
• the diameter of the third section 41c and the shape of the tip 41d can be modified.
• the ball 47 fulfills the dual function of filling valve and safety valve.
• the safety valve function is illustrated in Figure 8.
• the shutter member 40 is absent, the fluid outlet passage 13 is closed, the ball 47 is pushed back by the conical spring 48 towards the lower shoulder 43. By contact between the ball 47 and the shoulder lower 43, the seal is assured.
• the fluid entering the pressure pushes the ball 47 towards the inside of the container 2 so that the ball 47 is no longer in contact with the lower shoulder 43, and lets the pressurized fluid inwards of the container 2.
• the ball 47 acts as a non-return valve in that it prevents the exit of the fluid contained in the container 2, because the fluid that moves towards the outlet pushes the ball 47 into contact with the lower shoulder 43, creating sealing and preventing the expulsion of fluid under pressure to the outside of the container 2.
• the ball 47 also plays the role of safety valve, because if the shutter member 40 is unscrewed by accident, the ball 47 rises and returns to contact with the lower shoulder 43 to create the seal. The pressurized fluid is then not expelled towards the outside of the container 2.
• Figures 10 and 1 1 illustrate a third embodiment of the invention.
• the difference with respect to the second embodiment is the absence of a conical spring.
• the ball 47 is held in position by sufficient pressure inside the container 2 ( Figure 10).
• FIGs 8 to 1 there is illustrated a dip tube 49 for guiding the fluid from the inside of the container 2 to the outside.
• the ball 47 has a diameter greater than the inside diameter after fitting of the dip tube 49, so that the ball 47 does not fall into the container 2 ( Figure 1 1). In this way, the ball 47 is engaged between the dip tube 49 and the lower shoulder 43.
• the plunger tube 49 is not shown in FIGS. 1 to 7, but may be provided to fulfill in particular the same function of limiting the stroke of the ball 47, or the bearing function of the spring 48.
• the cone of the needle 41 d it is advantageously possible for the cone of the needle 41 d to have an angle of approximately 60 °, and the needle to be truncated so as not to damage the ball 47 when the needle 41 d is at ball contact 47.
• the second and third embodiments are more particularly suitable for fluids whose particle size is less than 2 mm.
• the measuring cap may be made of any material having food characteristics when the container is to contain and dispense food fluid. It may be made of plastic or metal (for example stainless steel or an aluminum alloy).
• the fluid outlet 13 could have any shape allowing the adaptation of an extension tube for dispensing the fluid more ergonomically.
• the cone angle a of the frustoconical portion of the radial peripheral outgrowth 10 does not correspond to the inclination ⁇ of the inside collar edge of the container. Thus, during the rotation of the penetrating portion 9 a bite is created and blocks the body 8 firmly.
• the ball 47 could be replaced by a cylinder of diameter substantially smaller than the diameter of the axial fluid passage 12 and substantially greater than the inside diameter of the spring 48, if any.
• Said cylinder may be provided with a substantially frustoconical groove, such as the groove 22a (FIG. 6).
• a seal, such as the seal 23a, is provided in the groove. The seal is made as shown in FIG. 6, the seal coming into contact with a narrowing of the axial fluid passage, such as the narrowing 50 (FIGS. 8 to 11).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• General Engineering & Computer Science (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=42148387

Family Applications (1)

Country Status (10)

Families Citing this family (6)

Family Cites Families (22)

• 2009
  • 2009-11-17 FR FR0958086A patent/FR2952618B1/fr active Active
• 2010
  • 2010-10-27 MX MX2012005696A patent/MX2012005696A/es not_active Application Discontinuation
  • 2010-10-27 RU RU2012124987/12A patent/RU2012124987A/ru unknown
  • 2010-10-27 WO PCT/IB2010/054869 patent/WO2011061651A1/fr active Application Filing
  • 2010-10-27 CA CA2780782A patent/CA2780782A1/fr not_active Abandoned
  • 2010-10-27 KR KR1020127015611A patent/KR101838644B1/ko active IP Right Grant
  • 2010-10-27 EP EP10784581A patent/EP2501629A1/fr not_active Withdrawn
  • 2010-10-27 JP JP2012539446A patent/JP2013510780A/ja not_active Withdrawn
  • 2010-10-27 US US13/509,944 patent/US20120228337A1/en not_active Abandoned
  • 2010-10-27 CN CN201080051977.6A patent/CN102612472B/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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