Deformable Bag Valve for Pressurized Fluid Dispensing
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Solution Overview
Problem
Existing devices for dispensing fluid substances from pressurized containers face difficulties in filling and pressurization, leading to container damage and discard.
Innovation Solution
A fluid substance dispensing device with a deformable elastic wall and a three-way valve system, where the valve is permanently fixed to the container, allowing for easier pressurization and filling by using a deformable bag and a chamber surrounding the valve, enabling controlled dispensing and preventing container damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pressurized container is used for dispensing fluid substance, then dispensing control is improved, but the container cannot withstand filling/pressurisation operations leading to damage and discard
Solution Approach 1:
The device is divided into distinct functional components: a reusable pressurized container, a separate deformable bag for fluid containment, and a dispensing valve assembly. This segmentation allows the container to be designed for durability while the bag handles the stress of filling and pressurization, resolving the contradiction between dispensing control and container durability.
Solution Approach 2:
A deformable bag acts as an intermediary element between the pressurized container and the fluid substance. The bag absorbs the mechanical stress during filling and pressurization operations, protecting the container from damage while still allowing controlled dispensing through the valve system.
2Strength
If a rigid container structure is used, then structural strength is improved, but filling and pressurisation operations become difficult
Solution Approach 1:
The system separates the rigid container structure from the flexible fluid containment element. The container provides structural strength and pressure containment, while the deformable bag within it accommodates filling operations and pressure changes, making the overall system both strong and easy to fill.
Solution Approach 2:
A deformable bag made of flexible material is placed inside the rigid container. This flexible element allows easy filling and pressurization by deforming during the process, while the rigid container maintains its structural strength. The flexible bag adapts to pressure changes without damaging the container.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device facilitates easier filling and pressurization of the container, ensuring safe operation and controlled dispensing of a specific volumetric dose of fluid substance, reducing the risk of container damage and improving user convenience.
Implementation Method 1
a deformable portion (13B) which is formed of an elastic material
Implementation Method 2
with counterforce provided by a spring (15)
Implementation Method 3
cooperates with at least one gasket (16) which controls the dispensing of the fluid substance
Data Source
AI summary
A device for dispensing a fluid substance includes a pressurised container associated with a dispensing valve featuring a supply conduit and a stem endowed with a cavity through which the fluid substance is dispensed, a chamber housed inside the container, and arranged so as to surround at least part of the body of the valve, the chamber delimited by a deformable wall and at least part of the body, the valve being of the three-way type, configured so that when the stem is in a first position, the cavity is isolated from the supply conduit and from the chamber, while the supply conduit is in communication with the chamber, wherein when the stem is in a second position, the cavity is in communication with the chamber, and wherein when the stem is in a third position, the cavity of the stem is in communication with at least the supply conduit.