Pressurized Fluid Control Device for Air Weapon Impulsive Feeding
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Solution Overview
Problem
Existing compressed gas supply systems for air and gas weapons have poor efficiency and are difficult to rearm, particularly when manually operated, leading to significant fluid waste with each shot.
Innovation Solution
A device with a cylindrical hollow body containing two variable-volume chambers and an obturating member that uses a guide member to control fluid flow, allowing instantaneous release of pressurized fluid with minimal components and simple operation, reducing fluid waste by controlling pressure through a single fluid supply conduit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a tank is used to contain compressed gas for supply to the bullet loading chamber, then the gas supply is sufficient for multiple shots, but a considerable waste of fluid occurs at each shot
Solution Approach 1:
The gas supply system is segmented into two distinct chambers: a first chamber that supplies gas during the shot cycle, and a second chamber that replenishes the first chamber during the inter-shot interval. This segmentation allows precise control of gas delivery timing, supplying gas only when needed in the first chamber, thereby eliminating waste associated with continuous tank supply.
2Reliability
If separate variable-volume chambers with separate supply circuits are used to control valve element forces, then opposed forces can be exerted on the valve element, but the device becomes complex and difficult to use
Solution Approach 1:
Both the first and second variable-volume chambers are supplied through a single common supply conduit connected to the bulb. The bulb acts as a reservoir that can selectively supply gas to either chamber through the shared conduit, eliminating the need for separate supply circuits while maintaining the ability to exert controlled opposed forces on the valve element.
3Ease of operation
If additional pressure is provided through a third supply conduit to break equilibrium and allow valve element to open, then gas ejection can be controlled, but the device requires multiple external fluid supply circuits
Solution Approach 1:
The single supply conduit serving both chambers enables multiple functions: it supplies the first chamber for shot execution, supplies the second chamber for rearming, and allows pressure differential control for valve actuation. The bulb reservoir provides universal pressure supply to both chambers, eliminating the need for a third dedicated supply conduit while maintaining full control capability.
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 achieves efficient and instantaneous fluid delivery with reduced waste, making it suitable for equipment requiring rapid activation, such as air or gas weapons, and simplifies the operation by minimizing the number of components and external connections.
Implementation Method 1
a first variable-volume chamber (7) interposed between said inlet (5) and said outlets (6), for containing a first volume (V1) of pressurized fluid; a second variable-volume chamber (12) located upstream from the first chamber (7), between the inlet (5) and a guide member (8), for containing a second volume (V2) of pressurized fluid
Implementation Method 2
an obturating member (9) slideably accommodated in the hollow body (2) and having an end portion (10) interacting with the end wall (4) located downstream, for selectively closing the outlets (6)
Data Source
AI summary
A device for controlling fluid delivery includes a hollow body closed by opposed end walls having an inlet and an outlet for a pressurized fluid and defining a first variable-volume chamber, between the inlet and the outlet for containing a first volume of pressurized fluid, an obturating member interacting with the downstream end wall of the hollow body for selectively closing the outlet, a guide member associated with the obturating member guiding it between a first end closing position and a second end opening position of the outlet; and an operating system acting upon the closure member to promote sliding thereof in the hollow body. The obturating member is movable relative to the guide member and is internally hollow to enclose the first chamber, and the guide member has a passage allowing fluid communication between the inlet and the first chamber. An air weapon incorporating the device.