Silencer Fitting Element With Variable Gas Guidance for Noise Reduction

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Solution Overview

Problem

There is a need for silencer components that provide efficient noise reduction during gas exhaust operations while ensuring ease of installation.

Innovation Solution

A silencer fitting element with a baffle plate and gas guiding structure that guides gas to different depths within damping material based on its proximity to the center axis, allowing for efficient noise reduction and ease of installation through threaded engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a silencer fitting element uses a simple mounting structure, then ease of installation is improved, but noise reduction effectiveness may be compromised

Engineering Contradiction:
Improveease of installationVSAvoidnoise reduction effectiveness
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The mounting structure is merged with the silencer fitting element body, integrating the thread directly into the fitting element. This eliminates the need for separate mounting components while maintaining the gas guiding functionality, thus achieving ease of installation without compromising noise reduction effectiveness

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The silencer fitting element serves multiple functions: it acts as both a mounting component (with integrated thread) and a gas guiding structure (with gas guiding surfaces). This multi-functionality allows a single component to provide both ease of installation and effective noise reduction

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If the silencer fitting element guides gas to different depths uniformly, then manufacturing is simplified, but noise reduction efficiency decreases

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidnoise reduction efficiency
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The gas guiding surfaces are designed with varying characteristics in different regions. The guiding distance varies depending on the radial position, with different depths optimized for different gas flow paths. This local differentiation maximizes noise reduction efficiency by directing gas to optimal damping material depths while remaining manufacturable

Inventive Principle:
Principle #3Local quality

3Reliability

If additional mounting components are used, then mounting reliability is improved, but device complexity increases

Engineering Contradiction:
Improvemounting reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting thread is integrated directly into the silencer fitting element body, combining the mounting function with the gas guiding function in a single component. This eliminates the need for separate mounting parts, reducing device complexity while maintaining mounting reliability through the robust threaded connection

Inventive Principle:
Principle #5Merging (Combining)

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 fitting element effectively reduces noise levels by optimizing the use of damping material volume and facilitates easy installation without additional mounting components, enhancing noise reduction capabilities in pneumatic systems.

Implementation Method 1

a gas guiding structure extending from the baffle plate and configured to guide gas exiting the several gas passages over a guiding distance from the second baffle plate surface, wherein the gas guiding structure is configured such that the guiding distance is different for at least one first gas passage of the several gas passages and at least one second gas passage of the several gas passages

Methodology Applied
Scientific EffectGas flow guidance:

Implementation Method 2

the function of a silencer is to at least partially absorb and/or dissipate energy of the gas, converting the energy into heat instead of sound

Methodology Applied
Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentEP4610124A1Silencer fitting element, silencer, pneumatic component, pneumatic system, commercial vehicle, and method of exhausting gas
Publication Date: 2025.09.03 ZF CV SYST EURO BV
  • EP4610124A1 patent drawingFigure 1~2
  • EP4610124A1 patent drawingFigure 3~4
  • EP4610124A1 patent drawingFigure 5~6

AI summary

A silencer fitting element (10) for a silencer (50) of a pneumatic component or a pneumatic system for a vehicle comprises a baffle plate (20), a gas guiding structure (13) extending from the baffle plate (20) and configured to guide gas exiting several gas passages provided in the baffle plate (20), and a thread (35) for mounting the silencer fitting element (10). The gas guiding structure (13) is configured to guide the gas over a guiding distance (37, 47) from the second baffle plate surface (22), wherein the guiding distance (37, 47) is different for at least one first gas passage (25) of the several gas passages (25, 26) and at least one second gas passage (26) of the several gas passages (25, 26).