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CN-116490444-B - Aerosol metering valve system and container comprising same

CN116490444BCN 116490444 BCN116490444 BCN 116490444BCN-116490444-B

Abstract

The object of the invention is an aerosol metering valve system for dispensing metered doses of a product, comprising a metering chamber (1), which metering chamber (1) is delimited by a side wall, a top wall and a bottom wall, a charging opening (2), which charging opening (2) extends from the bottom wall of the metering chamber (1), a release lever (3), which release lever (3) extends from the top wall of the metering chamber (1), wherein the release lever (3) is connected to a lever slider (4) extending towards the charging opening (2), a piston (5), which piston (5) is arranged in the metering chamber (1) and is movable in the metering chamber (1), a piston spring (6), which piston spring (6) is arranged in the metering chamber (1), one end of which piston spring (6) bears against the piston (5) and applies pressure to the piston (5), wherein a charging channel (7) is arranged coaxially in the metering chamber (1), wherein the charging channel (7) has a tight surrounding opening, the charging opening (8) is closed by a closure (9) and connects the charging channel (7) with the piston (5) and/or with a propulsion space (10) below the charging port (2), and the charging channel (7) has a dosing opening (11), which dosing opening (11) connects the charging channel (7) with a dosing space (12) above the piston (5).

Inventors

  • Maxine Kadura
  • Wislow Kadura
  • Sebastian Kochick
  • Stanislaw Kochick

Assignees

  • 马辛·卡杜拉
  • 威斯洛·卡杜拉
  • 塞巴斯蒂安·科奇克
  • 斯坦尼斯劳·科奇克

Dates

Publication Date
20260512
Application Date
20211122
Priority Date
20201123

Claims (13)

  1. 1. An aerosol metering valve system for dispensing a metered dose of a product, the aerosol metering valve system comprising: a metering chamber (1), the metering chamber (1) being defined by side walls, a top wall and a bottom wall, A charging opening (2), said charging opening (2) extending from said bottom wall of said metering chamber (1), A release lever (3), the release lever (3) extending from the top wall of the metering chamber (1), wherein the release lever (3) is connected with a lever slider (4) extending towards the charging opening (2), A piston (5), the piston (5) being arranged in the metering chamber (1) and being movable in the metering chamber (1), A piston spring (6), which piston spring (6) is arranged in the metering chamber (1), bears with one end against the piston (5) and exerts a pressure on the piston (5) towards the charging opening (2), The aerosol metering valve system is characterized by A charging channel (7) is coaxially arranged in the metering chamber (1), Wherein the piston (5) is tightly moved along the hollow rod slide (4) defining the charging channel (7) therein, or the piston (5) is tightly moved along a sleeve (13) extending coaxially through the metering chamber (1), the rod slide (4) being arranged in the sleeve (13), whereby the charging channel (7) is defined between the rod slide (4) and the inner surface of the sleeve (13), Wherein the charging channel (7) has a charging opening (8), the charging opening (8) being closed by a closure (9) and connecting the charging channel (7) with a propulsion space (10) under the piston (5) and/or with the charging opening (2), And the charging channel (7) has a dosage opening (11), which dosage opening (11) connects the charging channel (7) with a dosage space (12) above the piston (5).
  2. 2. Aerosol metering valve system according to claim 1, characterized in that a filling check valve (14) is arranged in the rod slider (4).
  3. 3. Aerosol metering valve system according to claim 2, characterized in that the filling check valve (14) is a ball or sealing piston subjected to a force exerted by a spring pressing against the release lever (3).
  4. 4. An aerosol metering valve system according to any of claims 1 to 3, characterized in that it is in the form of an adapter for mounting to an aerosol container (15) and is provided with a mounting assembly (16).
  5. 5. Aerosol metering valve system according to claim 4, characterized in that the mounting assembly (16) is provided with at least one peripherally arranged mounting hook (17), the mounting hook (17) being intended for a snap-fit connection with a flange (18) of the aerosol container (15) or with a flange (19) of an aerosol container head (20).
  6. 6. Aerosol metering valve system according to claim 4, characterized in that the charging port (2) is a male valve connector (21) or a female valve connector (22).
  7. 7. Aerosol metering valve system according to claim 4, characterized in that it has a dispensing nozzle (23).
  8. 8. Aerosol metering valve system according to claim 4, characterized in that it has an adapter annular flange (30) on its outer surface surrounding the release lever (3), the adapter annular flange (30) being arranged to protrude in a direction opposite to the charging opening (2) and having a geometrical dimension substantially corresponding to the dimension of the flange (18) of the aerosol container (15).
  9. 9. An aerosol metering valve system according to any of claims 1 to 3, characterized in that the aerosol metering valve system is arranged within an aerosol container (15).
  10. 10. An aerosol metering valve system according to any of claims 1 to 3, characterized in that the charging opening (8) is located in the charging channel (7) at a proximal end with respect to the charging port (2), and the dosing opening (11) is located in the charging channel (7) at a proximal end with respect to the release lever (3).
  11. 11. An aerosol metering valve system according to any of claims 1to 3, characterized in that it additionally comprises a viewing area (31), which viewing area (31) is provided within the metering chamber (1) and is made of a transparent or partially transparent material and extends along the metering chamber (1) on a side wall of the metering chamber at least in the range of movement of the piston (5).
  12. 12. An aerosol metering valve system according to any of claims 1 to 3, characterized in that it additionally comprises a limiting structure (32), the limiting structure (32) being for limiting the movement of the piston (5).
  13. 13. A container for storing and dispensing a pre-defined dose of a product, the container comprising an outer housing (24) and an aerosol metering valve system, the container being characterized in that the aerosol metering valve system is as defined in any one of claims 1 to 12.

Description

Aerosol metering valve system and container comprising same Technical Field The present invention relates to aerosol metering valve systems and containers comprising such aerosol metering valve systems. The object of the present invention is particularly applicable in the pharmaceutical, food, cosmetic and chemical industries, in particular for storing and dispensing reagents in pre-defined volumes (doses). Background In recent years, dynamic developments in aerosol technology have been seen, which allow for the storage and application of a wide range of products. Aerosol containers have been popular for their efficiency, convenience and safety of use. In general, aerosol containers are disposable or reusable vessels made of metal, glass or plastic containing pressurized, liquefied or dissolved gases. Aerosol containers may also contain liquids, pastes or powders and are often provided with dispenser means to enable the application of the product in the form of solid or liquid particles suspended in a gas or in the form of a foam, paste or powder or in the liquid or gaseous state. Classical aerosol containers contain a spray agent (e.g., in liquid form) and a propellant, which is a fluid or gas under pressure. Triggering the aerosol valve causes the valve to be opened and the spray to be expelled by the pressurized propellant toward an outlet generally ending with a dispensing head, thereby producing a precisely dispensed stream. Aerosol packages have become popular because of the many advantages they offer. Products stored in aerosol packages generally have a long shelf life, mainly because of the hermetic seal that prevents contact between the stored product and the environment, especially contaminants and microorganisms. This advantage is particularly suitable for storing pharmaceutical agents, where maintaining maximum purity is an essential factor. It should also be noted that as global pollution problems rise, it is desirable to use a package that is mostly suitable for recycling, aerosol packages are certainly such packages, since aerosol packages are typically made of aluminium and plastic, and thus are almost entirely suitable for reprocessing. In some branches of industry, aerosol systems are not readily appreciated and are therefore not generally the first option for dispensing components. A more demanding industry branch is the pharmaceutical industry, where medical substances have to be dispensed under very stringent conditions. It is particularly important that the medical substance be dispensed in precisely metered doses, which often translate into volumes of such medical substance. It is particularly important that the medical substance be dispensed in precisely metered doses, which often translate into volumes of such medical substance. It is also important to maintain a highly reproducible metering of the dose of substance dispensed, particularly if the volume in the dispensing container decreases after each dispensing action. Another US patent application US2015239645A1 discloses a valve system for dosing a predetermined amount of a content, in particular in the form of a foam. The valve system includes a cap that is mounted on the valve and that houses a metering chamber. The volume of the dose is adjusted by flipping the cap, and thus by changing the volume of the metering chamber. The system is based on a valve that fills the metering chamber during the phase of pushing the lever and opens the discharge to the dispensing nozzle and discharges the content out of the metering chamber during the phase of releasing the lever. US3301444a discloses an aerosol valve which allows dispensing a predetermined measured volume of product, the valve comprising a measuring chamber, the volume of which is defined by the dose, and which is filled with the product when the valve is in a closed position. Depressing the actuator stem closes the metering chamber inlet aperture and opens the discharge outlet through the dispensing head. In this case, the valve discharges the volume of product contained in the measuring chamber. A container for dispensing a dose of a product is also known from US5031802 a. The container includes a valve system that fits within the neck of the bottle. The valve system includes a metering chamber. The metering chamber is made of an elastic material in the form of a bellows. In order to expel a metered dose of product, the cap must first be removed. Removal of the cap increases the volume of the metering chamber and creates a negative pressure. The negative pressure releases balls that block the tubing connected to the plunger tube. In this way, the duct is opened and the metering chamber is filled with product. Complete unscrewing of the cap breaks the fluid tightness and allows the balls to fall down. Thus, a metered volume of product is provided to the user. International patent application WO2019125566A1 discloses an aerosol valve system for dispensing product from a pressu