Annular Valve Disk Pressure Relief for Damping Assembly
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Solution Overview
Problem
Existing adjustable damping valve devices face challenges in assembly due to small pressure relief valves, which are sensitive to manufacturing tolerances and require multiple units to achieve a large flow cross section, increasing assembly costs and complexity.
Innovation Solution
The use of an annular valve disk with a guide body and a clamping device forms a space-saving pressure relief valve, allowing for a large pressure-impinged surface and outflow cross section, with the emergency operation valve body being easily mountable in any orientation and featuring a clamping area that eliminates the need for complex connections, and an axial cutout for a simple overpressure channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If small pressure relief valves are used, then manufacturing cost is reduced, but assembly complexity increases and flow cross section decreases
Solution Approach 1:
The patent combines multiple pressure relief valve functions into a single annular valve disk structure. The annular valve disk integrates the function of multiple small valves, providing both large flow cross section and simplified assembly. The valve disk is clamped between the guide body and emergency operation valve body, creating a unified pressure relief mechanism that eliminates the need for multiple separate valves.
2Ease of manufacture
If small pressure relief valves are used, then individual valve cost is reduced, but the number of valves required increases
Solution Approach 1:
The annular valve disk serves as a single integrated component that replaces multiple small pressure relief valves. The annular structure provides sufficient flow cross section for all required pressure relief functions in one piece, eliminating the need to assemble multiple separate valves and reducing both quantity and assembly complexity.
3Area of stationary object
If annular valve disk is used, then flow cross section is increased, but manufacturing precision requirements increase
Solution Approach 1:
The elastic valve disk utilizes its own elasticity to compensate for manufacturing tolerances. The elastic material naturally adapts to the valve seat surface, self-adjusting to achieve proper sealing and function without requiring extremely precise manufacturing. This self-compensating mechanism allows the annular valve disk to provide large flow cross section while maintaining functional reliability despite normal manufacturing variations.
4Volume of moving object
If elastic valve disk with clamping device is used, then assembly space is reduced, but clamping force control becomes critical
Solution Approach 1:
The clamping device is integrated into the emergency operation valve body, merging the functions of valve actuation and valve disk retention. This integration eliminates separate clamping mechanisms and reduces assembly space. The clamping force is applied through the emergency operation valve body structure itself, providing reliable retention of the elastic valve disk within the compact design.
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
This configuration reduces assembly expenses and allows for a larger flow cross section while minimizing production costs and tolerances, providing a robust and efficient damping valve device.
Implementation Method 1
a valve body of the pressure relief valve is formed by at least one annular valve disk... a large pressure-impinged surface is available at the valve disk
Implementation Method 2
the valve disk can also be preloaded by a separate closing spring. However, a construction in which the valve disk is elastically constructed and is held by clamping device
Data Source
AI summary
An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve which is functionally connected in series with the emergency operation valve. A pressure relief valve having the constructional form of a seat valve is arranged inside the emergency operation valve and is functionally connected in parallel with the emergency operation valve. A valve body of the pressure relief valve is formed by at least one annular valve disk.