Nested Pressure-Relief Valve in Emergency Damping Device
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Solution Overview
Problem
Existing adjustable damping valve devices face challenges in optimizing installation space and suffer from internal leakage and impaired valve guidance due to the direct contact and parallel hydraulic connection of auxiliary and emergency operation valves, leading to increased production costs.
Innovation Solution
The pressure-relief valve is arranged within the valve body of the emergency operation valve, allowing for a more compact design with reduced radial and axial installation space requirements, and is connected to a pressure compensation channel for improved flow guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure-relief valve is arranged radially in an intermediate wall of the damping valve device, then the damping force can be adjusted, but both the radial and axial installation space are increased
Solution Approach 1:
The pressure-relief valve is nested within the valve body of the emergency operation valve, with the pressure-relief valve arranged axially in a receiving channel of the valve body. This nested arrangement allows the pressure-relief valve to be housed within the existing structure of the emergency operation valve, eliminating the need for additional radial space in the intermediate wall, and thereby reducing both radial and axial installation space while maintaining damping force adjustment functionality.
2Reliability
If the auxiliary valve body and emergency operation valve body are in direct contact with parallel hydraulic connection, then the damping force can be adjusted, but internal leakage increases and valve guidance is impaired
Solution Approach 1:
The harmful direct contact and parallel hydraulic connection between the auxiliary valve body and emergency operation valve body are eliminated by extracting the pressure-relief valve function into a separate receiving channel within the emergency operation valve body. This separation removes the source of internal leakage and prevents the interference between the two valve bodies, thereby reducing internal leakage while maintaining damping force adjustment capability.
3Reliability
If the auxiliary valve body and emergency operation valve body are in direct contact, then the damping force can be adjusted, but the guiding of the valve body relative to the magnetic coil is impaired
Solution Approach 1:
The direct contact between the auxiliary valve body and emergency operation valve body is eliminated by extracting the pressure-relief valve into a separate receiving channel within the emergency operation valve body. This separation removes the mechanical interference that impairs valve body guidance, allowing the auxiliary valve body to move smoothly relative to the magnetic coil while maintaining damping force adjustment 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
This arrangement significantly reduces installation space needs, minimizes internal leakage, and simplifies the design, while maintaining effective damping force adjustment and valve guidance, thereby reducing production costs.
Implementation Method 1
a damping valve which is adjustable by means of magnetic force
Implementation Method 2
This effect is produced at least by a spring force against which the magnetic force must act
Implementation Method 3
the pressure-relief valve is arranged in the valve body of the emergency operation valve... connected to a pressure compensation channel
Data Source
AI summary
An adjustable damping valve device (27), in particular for a vibration damper, comprises a first valve (47) and an emergency operation valve (61), both of which are actuated by magnetic force. The emergency operation has a valve body (61) which is preloaded in a closed position by at least one valve spring. A pressure-relief valve (85) is connected hydraulically in parallel with the emergency operation valve (61) so that the damping force is determined by the pressure-relief valve (85) when the emergency operation valve (61) is closed. The pressure-relief valve (85) is arranged in the valve body (63) of the emergency operation valve.