Pneumatic Valve Scaffold Damping for Low-Complexity Air Exhaust Noise

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Solution Overview

Problem

Existing damping members for pneumatic valves struggle to achieve a balance between effective sound damping and cost-effectiveness, often requiring complex geometries and customized production processes that increase costs and limit controllability of the flow path.

Innovation Solution

A damping member featuring a scaffold structure that conducts air through its repetitive and layered design, eliminating the need for a cover and mesh, thereby improving cost-effectiveness and allowing for customizable designs and enhanced sound damping capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a mesh and cover structure is used for damping sound emission, then sound damping performance is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvesound emissionVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the damping member with the valve body into a single integrated component. The damping structure is formed directly within the valve body's internal geometry, eliminating the need for separate mesh and cover components. This integration reduces assembly steps, lowers manufacturing complexity, and maintains effective sound damping through the unified structure.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent employs a porous damping structure formed within the valve body. The porous geometry allows air to pass through while effectively dampening sound emission. This porous internal structure replaces traditional mesh materials and provides equivalent or superior acoustic damping with simplified manufacturing.

Inventive Principle:

Principle #31Porous materials

2Object-affected harmful factors

If complex geometries are used to improve damping performance, then sound damping capability is improved, but manufacturing cost and production complexity increase

Engineering Contradiction:

Improvesound damping capabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent optimizes the damping performance by adjusting geometric parameters of the internal porous structure rather than changing the overall component configuration. By modifying parameters such as pore size, distribution, and pattern within the valve body, effective sound damping is achieved using standard manufacturing processes, avoiding the need for complex customized production.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The damping structure is segmented into multiple zones or patterns within the valve body, allowing different regions to address specific acoustic frequencies or flow characteristics. This segmentation enables effective damping performance through standardized manufacturing techniques applied to modular geometric patterns.

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If customized production processes are used for complex damping structures, then damping performance is improved, but productivity and cost-effectiveness deteriorate

Engineering Contradiction:

Improvedamping performanceVSAvoidproduction efficiency

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The valve body design incorporates a universal damping structure that can be manufactured using standard production processes. The integrated damping geometry serves multiple functions: structural support, flow guidance, and acoustic damping. This multi-functionality eliminates the need for specialized customized production while maintaining effective damping performance across different applications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 scaffold structure effectively suppresses sound emission and vibrations by deflecting, distributing, and diffusing air, while also enabling efficient customization and reduced manufacturing costs, thus achieving a superior balance between function and cost-effectiveness.

Implementation Method 1

the scaffold structure is adapted to damp the sound emission of the pressurized air by conducting the air through the scaffold structure

Methodology Applied

Scientific EffectSound damping through porous structure: Acoustic Absorption

Implementation Method 2

by deflecting, distributing, and diffusing air

Methodology Applied

Scientific EffectFlow distribution and diffusion: Diffusion

Data Source

PatentUS20250074383A1Damping member for a pneumatic valve of a pneumatic system of a vehicle, pneumatic system, vehicle, and method

Publication Date: 2025.03.06 ZF CV SYST EURO BV

AI summary

A damping member (100) for a pneumatic valve (205) of a pneumatic system (201) of a vehicle (200a), in particular a utility vehicle (200b), is adapted to be mounted to an air outlet section (210) of the valve (205) which is used for exhausting pressurized air (220). The damping member (100) is adapted for damping sound emission of the pressurized air (220) and includes a scaffold structure (105). The scaffold structure (105) is adapted to damp the sound emission of the pressurized air (220) by conducting the air (220) through the scaffold structure (105).