Solenoid Valve Bobbin Assembly for Low-Current Fluid Control
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Solution Overview
Problem
Solenoid valves used in devices like engine fuel systems face challenges in assembly and require reduced current consumption due to limited electrical energy availability, especially when components are small and complex.
Innovation Solution
A solenoid valve design featuring a bobbin with a coil and armature, where components are assembled in a 'drop-down' method with a cap and armature stop to facilitate easy installation and reduce current requirements, and an integral valve seat within the bobbin or housing to minimize tolerance stack-up and enhance magnetic flux path efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional solenoid valve assembly methods are used with multiple small components, then the valve can achieve precise fluid flow control, but the assembly process becomes difficult and time-consuming
Solution Approach 1:
The patent combines multiple components (bobbin, valve seat, armature, and housing) into an integrated assembly where the bobbin is received within the housing and the armature is moveable relative to the valve seat. This merging reduces the number of separate parts and simplifies assembly while maintaining precise fluid flow control through the integrated magnetic and valve components.
Solution Approach 2:
The bobbin is received at least partially within the housing, creating a nested structure where smaller components are housed within larger ones. This nesting approach consolidates multiple components into a compact arrangement, facilitating easier assembly and reducing the complexity of handling multiple small parts separately.
2Reliability
If conventional solenoid designs are used in engine fuel systems without batteries, then the valve can provide reliable fluid control, but the current consumption becomes excessively high
Solution Approach 1:
The patent optimizes magnetic parameters through the coil and armature design to reduce the current required to actuate the solenoid. By carefully designing the magnetic circuit and optimizing the interaction between the coil and armature, the valve achieves reliable fluid control with reduced electrical energy consumption, making it suitable for engine fuel systems without batteries.
3Adaptability or versatility
If multiple separate components are used in the solenoid valve, then each component can be optimized for its specific function, but the overall device complexity increases
Solution Approach 1:
The housing serves multiple functions: it provides structural support, contains the bobbin, and defines part of the fluid flow path. The bobbin similarly serves as both a magnetic component and a structural element that receives the armature. This multi-functionality reduces the number of separate components needed while maintaining optimized performance for each function.
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 simplifies assembly, reduces current consumption, and enhances the solenoid valve's operational efficiency, making it suitable for devices with limited power sources, such as small engines without batteries, while maintaining precise control over fluid flow.
Implementation Method 1
The valves utilize an armature driven by a magnetic field selectively generated by selectively providing electric current to a coil
Data Source
AI summary
In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.