Impulse Ejection Device with Nested Propellant Sleeve
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Solution Overview
Problem
Existing impulse ejection devices suffer from recoil issues and inefficient design, limiting the quantity of medium that can be pulse-ejected while maintaining compactness and usability, especially in hand-held applications.
Innovation Solution
A device design where the propellant space surrounds the media space, allowing the propellant to drive a sleeve to open and create a fluid connection for impulse ejection, reducing recoil and enabling more medium to be ejected with the same pulse power, and incorporating features like non-return valves and differential pressure forces for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the media space and propellant space are arranged one behind the other in known devices, then the device structure is simpler, but the device size is larger and less compact
Solution Approach 1:
The patent applies nesting by placing the media space inside the propellant space, with the sleeve containing the media space surrounded by the propellant space. This nested arrangement allows the media chamber to be positioned concentrically within the propellant chamber, significantly reducing the overall device volume while maintaining functional separation between the two spaces.
Solution Approach 2:
The patent transitions from a linear one-dimensional arrangement (media space behind propellant space) to a radial three-dimensional configuration where the media space is surrounded by the propellant space in a cylindrical geometry. This dimensional change enables more efficient space utilization and compactness.
2Quantity of substance
If the quantity of medium to be pulse-ejected is increased, then more medium can be ejected, but the recoil increases
Solution Approach 1:
The patent employs counterbalancing by positioning the media space centrally within the propellant space and using the surrounding propellant to provide balanced pressure distribution. The radial arrangement allows propellant to act uniformly on the media space from all directions, counteracting recoil forces and enabling larger quantities of medium to be ejected with reduced net recoil.
3Reliability
If the sleeve is held in a sealed position to maintain media space separation, then sealing is effective, but the fluid connection for propellant passage is blocked
Solution Approach 1:
The patent implements a dynamic sealing mechanism where the sleeve can move between a sealed position (maintaining separation during storage and handling) and an open position (allowing propellant passage during operation). The sleeve is biased by a spring to remain sealed until actuated, at which point it moves to create a fluid connection between the propellant space and media space, enabling controlled ejection.
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 solution reduces recoil, allows for a more compact design, and enables a larger quantity of medium to be pulse-ejected, improving the usability and efficiency of impulse ejection devices, particularly in hand-held applications.
Implementation Method 1
the sleeve is moved by the pressurized propellant such that as a result of the movement a fluid connection for the passage of propellant from the propellant space into the medium space is formed
Implementation Method 2
in a pulse step the propellant ejects the medium in a pulsed manner through the ejection end
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The aim of the invention is to further develop known devices and methods for the impulse ejection of a medium. The invention therefore relates to a device (10) for the impulse ejection of a medium, comprising a medium chamber (1) holding a medium, which chamber is delimited by an ejection tube (2) and a sleeve (13), adjoining the ejection tube (2) and opposite the ejection end thereof, and a propellant chamber (5) for holding a propellant, which propellant chamber surrounds the medium chamber (1) in the region of the sleeve at least to some extent. The sleeve is designed for movement between a pressure position and an ejection position and seals, in the pressure position, the medium chamber (1) from the propellant chamber (5) at a termination (6). In the ejection position, the sleeve is spaced apart from the termination (6) so that there is a fluid connection (7) for passage of the propellant from the propellant chamber (5) to the medium chamber (1).