Trumpet-Shaped Valve Insert Radial Bore Flow Control
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Solution Overview
Problem
Existing solenoid valves face challenges in optimizing fluid flow characteristics and reducing vibrations and noise caused by air/gas bubbles during operation, particularly in hydraulic and pneumatic systems, due to limitations in flow resistance and pressure modulation.
Innovation Solution
The valve insert is designed with radial bores featuring a trumpet-shaped geometry, similar to a Laval nozzle, which influences fluid flow by tapering in the inflow region and widening in the outflow region, allowing for selective control of flow speed and pressure differences to enhance self-venting properties and acoustics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radial bores with conventional geometry are used in the valve insert, then the structure is simple and easy to manufacture, but the fluid flow characteristics cannot be optimized and vibrations/noise from air bubbles cannot be reduced
Solution Approach 1:
The patent applies local quality by giving different geometric characteristics to different regions of the radial bore. The inflow region has a tapered geometry that narrows toward the center, while the outflow region has a different geometry, creating localized flow control zones within the bore structure. This allows optimization of fluid flow characteristics and self-venting properties without requiring complete redesign of the entire valve insert.
Solution Approach 2:
The patent changes geometric parameters of the radial bores, specifically the cross-sectional area distribution along the flow path. By varying the bore diameter and shape parameters (tapered inflow region vs. different outflow region), the flow resistance and pressure distribution are optimized to improve self-venting properties and reduce vibrations caused by air bubbles.
2Speed
If fluid flow speed is increased to improve response time, then productivity increases, but severe compression shocks occur causing vibrations and noise
Solution Approach 1:
The patent applies beforehand cushioning by designing the bore geometry to gradually accelerate and decelerate fluid streams. The tapered inflow region and modified outflow region create a cushioning effect that prevents sudden pressure changes and compression shocks, allowing faster flow speeds without generating harmful vibrations and noise.
3Ease of operation
If the valve insert is designed with complex trumpet-shaped radial bores, then fluid flow characteristics are optimized and acoustics improve, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by forming the complex trumpet-shaped bore geometry during the initial shaping of the sheet metal strip before the rolling process. The radial bores are created with the desired tapered and varied geometry in the flat strip, allowing the complex shape to be achieved without additional complex manufacturing steps after forming the valve insert body.
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 design improves the self-venting property, reduces vibrations and noise, optimizes fluid flow routing, and enhances the acoustics of solenoid valves by accelerating or decelerating fluid streams without severe compression shocks, effectively managing air/gas bubbles and pressure changes.
Implementation Method 1
The valve insert (18) is designed with radial bores (18.2) featuring a trumpet-shaped geometry, similar to a Laval nozzle, which influences fluid flow by tapering in the inflow region and widening in the outflow region
Implementation Method 2
allowing for selective control of flow speed and pressure differences to enhance self-venting properties and acoustics
Data Source
AI summary
A valve insert for a valve cartridge of a solenoid valve, wherein the valve insert is produced as a one-piece, slotted sleeve from a sheet metal strip and has at least one radial bore as an inlet and/or drain opening of a fluid flow and to a corresponding valve cartridge or to a solenoid valve having such a valve insert and to a method for producing a valve insert. The at least one radial bore is designed having a trumpet-shaped geometry in order to specifically influence the flow characteristics of the fluid flow.