Electromagnetic Valve Bobbin Structure for Coil Heat Dissipation
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Solution Overview
Problem
Conventional electromagnetic valves face challenges in heat dissipation of the coil, which affects their performance and reliability.
Innovation Solution
The electromagnetic valve design includes a bobbin made of resin with a cylindrical member in contact with its inner side, enhancing heat conductivity and dissipation by eliminating air gaps and improving thermal pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional electromagnetic valve structure is used, then the device complexity is low, but the heat dissipation of the coil is insufficient
Solution Approach 1:
A cylindrical member is introduced as an intermediary heat conduction component between the bobbin and the valve body. This mediator establishes a thermal pathway that efficiently transfers heat from the coil to the valve body, resolving the heat dissipation issue without requiring fundamental changes to the electromagnetic valve structure.
Solution Approach 2:
The air gap between the bobbin and valve body is extracted/eliminated by introducing the cylindrical member. This removal of the thermal insulator (air) and replacement with a thermal conductor (cylindrical member) creates an effective heat dissipation pathway while maintaining structural simplicity.
2Temperature
If the bobbin is isolated from the valve body, then the manufacturing is simple, but the heat dissipation path is blocked
Solution Approach 1:
The cylindrical member is nested within the bobbin structure, fitting into the radial space between the coil and the valve body. This nested configuration creates an efficient heat conduction pathway without adding external components or complicating the assembly process.
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 significantly improves heat dissipation of the coil, reducing temperature and performance fluctuations, while maintaining manufacturing simplicity and cost-effectiveness.
Implementation Method 1
a bobbin whose inner side is in contact with a cylindrical member
Data Source
AI summary
A cutoff valve comprises a coil wound around an outer periphery of a bobbin, a cylinder in contact with a protruding portion formed in an inner side of the bobbin, and an armature disposed inside the cylinder and moved in a winding axis direction of the coil by energization of the coil.