Solenoid Valve Flow Guide for Axial Force Compensation
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Solution Overview
Problem
Solenoid valves in ABS, TCS, or ESP systems face actuation quality issues due to additional axial forces from fluid flow onto the sealing element or magnet armature, disrupting the equilibrium of forces between the spring and magnetic forces, especially when fluid inflow and outflow occur in opposite directions.
Innovation Solution
A connecting duct is formed jointly by the valve body and flow guide element to create a fluid connection between the fluid space and magnet armature space, allowing pressure compensation and preventing undesirable forces from affecting the magnet armature, with the flow guide element being fixed in place to prevent displacement and ensure radial fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sealing element is arranged above the valve seat in the releasing position, then fluid can flow through the valve seat, but additional axial forces act on the sealing element or magnet armature, adversely affecting actuation quality
Solution Approach 1:
A flow guide element is introduced as an intermediary component between the fluid space and the magnet armature. This flow guide element redirects the fluid flow path so that fluid does not directly impinge on the magnet armature, thereby eliminating the harmful axial forces while maintaining fluid flow capability through the valve seat
Solution Approach 2:
The flow guide element creates a localized modification in the fluid flow characteristics by providing a specific flow path that avoids the magnet armature region. This local redirection of fluid flow resolves the contradiction by maintaining overall fluid productivity while protecting the critical magnet armature region from harmful forces
2Productivity
If fluid inflow and outflow occur in opposite directions through the valve seat and outlet duct, then fluid can be discharged from the fluid space, but counteracting pressures build up in the magnet armature space, disrupting force equilibrium
Solution Approach 1:
The flow guide element serves as a mediator that manages the fluid pressure distribution by guiding fluid flow away from the magnet armature space. This prevents the build-up of counteracting pressures that would disrupt the force equilibrium between spring and magnetic forces
Solution Approach 2:
The harmful counteracting pressure effect is extracted or removed from the magnet armature space by redirecting fluid flow through the flow guide element. This separation of fluid flow paths eliminates the pressure build-up problem while maintaining the desired fluid discharge 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 solution improves the actuation quality of the solenoid valve by preventing counteracting pressures in the magnet armature space, ensuring smooth operation and enhanced fluid flow directionality.
Implementation Method 1
a magnetic force which serves for displacing the sealing element and which acts on the magnet armature
Implementation Method 2
a restoring force of a spring element
Implementation Method 3
a fluid pressure force which is taken into account in the design of the solenoid valve
Data Source
AI summary
A magnetic valve includes a valve body having a valve seat which can be closed by a sealing element, at least one outlet channel which leads into a fluid chamber of the magnetic valve, receiving the sealing element at least in parts, and a flow guiding element which surrounds the sealing element at least in parts. The sealing element is operatively connected to a magnet armature arranged in a magnet armature chamber embodied on one side of the flow guiding element facing away from the fluid chamber. The valve body and the flow guiding element together form at least one connection channel producing a fluidic connection between the fluid chamber and the magnet armature chamber.