Coated Damping Valve Disk for Noise and Area Pressure Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing damping valves face issues with high area pressure at the contacting edges of valve disks, leading to potential noise and deformation, which existing solutions fail to adequately address.
Innovation Solution
An elastic coating is applied to the valve disk, providing a varying supporting force through its configuration, allowing for selective adjustment of spring rates and preventing increased area pressure between adjacent disks, with the coating optionally featuring a rib profile and off-center orientation to manage lift behavior and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two valve disks are combined with contacting edges to define lift behavior, then the lift behavior is controlled, but high area pressure occurs at the contacting edges causing noise and deformation
Solution Approach 1:
The patent applies an elastomeric coating on the valve disk surface, which acts as a flexible film to distribute the contact pressure over a larger area. This flexible coating layer prevents concentrated high area pressure at the edges while maintaining the desired lift behavior control through its elastic properties.
Solution Approach 2:
The patent combines a rigid valve disk with an elastomeric coating to create a composite structure. The rigid disk provides structural strength and lift control, while the elastomeric coating reduces area pressure and prevents noise and deformation through its compliant material properties.
2Object-affected harmful factors
If an elastomeric coating is applied to the valve disk, then area pressure is reduced and noise prevented, but additional assembly effort is required
Solution Approach 1:
The elastomeric coating is integrally combined with the valve disk in a single manufacturing step, eliminating the need for separate assembly operations. The coating is applied directly to the valve disk surface during production, merging the coating application into the base manufacturing process.
Solution Approach 2:
The elastomeric coating is designed to be self-adhering to the valve disk surface through surface preparation and adhesive properties, eliminating the need for additional fastening or securing operations during assembly.
3Strength
If the coating covers only a partial area of the valve disk, then spring rate is increased in the coated area, but the lift behavior becomes less uniform
Solution Approach 1:
The elastomeric coating is applied selectively to specific areas of the valve disk where enhanced spring rate is required. This local application allows optimization of lift behavior in critical regions while maintaining uniform characteristics in other areas, achieving a balance between localized strength enhancement and overall uniformity.
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 effectively reduces noise and deformation by managing lift behavior and preventing increased area pressure, allowing for a defined lift movement and noise reduction without additional assembly effort or axial projections, while maintaining a constant material thickness.
Implementation Method 1
the further valve element is formed by an elastic coating of the valve disk, which exerts a varying supporting force with respect to the valve disk via the configuration of the top surface of the valve disk
Implementation Method 2
the damping medium located in the pressure chambers can escape during a compression of the displacer spaces and can accordingly develop a damping force
Data Source
AI summary
A damping valve for a vibration damper includes a damping valve body with a through-channel whose outlet opening is at least partially closed by at least one elastically deformable valve disk. A further valve element is associated with the valve disk. This further valve element predetermines a defined lift behavior for the valve disk proceeding from a valve seat surface. The further valve element is formed by an elastic coating of the valve disk that exerts a varying supporting force with respect to the valve disk via the configuration of the top surface of the valve disk.