3D-Printed Silencer Closure Design for Slower Gas Outflow
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Solution Overview
Problem
Existing silencers for firearms have limited damping capabilities due to high-pressure gases escaping quickly, leading to significant noise generation.
Innovation Solution
A silencer design featuring a main body with expansion chambers and a closure device that reversibly adjusts to control fluid flow, using 3D printing for complex geometries to enhance damping and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the silencer uses traditional open expansion chambers, then the structure is simple and lightweight, but the damping capability is limited due to quick gas outflow
Solution Approach 1:
The patent introduces a closure device that can dynamically change the state of the expansion chambers between open and closed. This dynamic mechanism allows the silencer to adapt its damping capability based on operational needs, resolving the contradiction between structural simplicity and noise reduction by adding only when necessary.
Solution Approach 2:
The closure device changes the physical state (open/closed) of the expansion chambers to control gas flow parameters. By altering the flow path and residence time of combustion gases, the system achieves enhanced damping while maintaining the ability to revert to a simpler configuration when full damping is not required.
2Object-generated harmful factors
If the silencer incorporates a closure device to reduce gas outflow rate, then the damping capability increases, but the device complexity increases
Solution Approach 1:
The closure device is designed to operate automatically based on pressure differential between the interior and exterior of the silencer. During firing, high internal pressure forces the closure open; during idle periods, external pressure closes it. This self-regulating mechanism reduces damping capability without requiring complex control systems, operators, or power sources.
Solution Approach 2:
The closure device acts as an intermediary element between the expansion chambers and the external environment. It mediates the gas flow by providing a controllable barrier that can be actuated by simple pressure forces, avoiding the need for complex mechanical or electronic control systems while still achieving the desired flow regulation.
3Adaptability or versatility
If the silencer uses additive manufacturing for the main body, then complex geometries and closure devices can be integrated, but manufacturing precision requirements increase
Solution Approach 1:
The patent integrates the closure device directly into the main body structure through additive manufacturing, creating a monolithic component. This merging of previously separate parts (body and closure mechanism) into a single printed component reduces assembly complexity and allows for optimized geometries that would be difficult or impossible to achieve with traditional manufacturing methods.
Solution Approach 2:
The closure device is nested within the main body structure, with moving components arranged concentrically or in compact configurations. This nesting approach allows complex functionality to be packed into a compact volume while maintaining manufacturability through additive processes, reducing the overall footprint and simplifying external interfaces.
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 silencer effectively reduces noise by slowing down the outflow of combustion gases, achieving better damping performance with a lower weight through adjustable closure mechanisms.
Implementation Method 1
the at least one closure device changes between an open position and a closed position depending on a pressure ratio between a pressure in the channel and an ambient pressure
Implementation Method 2
the main body being built up in layers by an additive production method, i.e. a 3D printing method
Data Source
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AI summary
The present invention describes a silencer (1) comprising a main body (2) which defines a longitudinal axis (L) and which contains a channel (3), extending along the longitudinal axis (L) between an inlet opening (31) and an outlet opening (32), and a multiplicity of expansion chambers (4) located one after another along the longitudinal axis (L). The expansion chambers (4) each have an opening (5) next to the longitudinal axis (L). The silencer (1) also comprises at least one closure device (10) which is connected to the main body (2), is located inside the main body (2) and is designed to reversibly close at least one region of the main body (2). Also described is a method for producing the silencer (1).