Fan Module Torsion Spring Guiding Plate Vent Blocking
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Solution Overview
Problem
Conventional fan modules for computer cases require manual placement of guiding plates to block empty fan positions, which is inconvenient and reduces heat dissipation efficiency due to potential airflow leakage.
Innovation Solution
A fan module design featuring a guiding plate with a torsion spring mechanism that automatically blocks airflow when no fan is installed, allowing for adjustable positioning and maintaining efficient heat dissipation without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guiding plate is manually placed in the empty fan position to block airflow, then heat dissipation efficiency is improved, but device complexity and ease of operation deteriorate due to manual installation requirement
Solution Approach 1:
The guiding plate is equipped with an elastic arm that automatically pushes it into the blocking position when the fan unit is removed, eliminating the need for manual installation. The component performs the blocking function automatically based on the presence or absence of the fan unit.
Solution Approach 2:
The guiding plate is designed to be movable between two positions: a first position that blocks the vent when no fan is installed, and a second position that allows airflow when a fan is installed. This dynamic adjustment resolves the contradiction by adapting the blocking function to the actual operational state.
2Reliability
If a guiding plate is used to block empty fan positions, then heat dissipation efficiency is improved, but device complexity increases due to additional components
Solution Approach 1:
The guiding plate is integrated with the shell structure through the elastic arm mechanism, combining the blocking function with the existing fan unit housing. This integration reduces the need for separate, additional components while maintaining the heat dissipation efficiency.
Solution Approach 2:
The elastic arm provides automatic actuation of the guiding plate based on fan unit presence, eliminating the need for complex control systems, sensors, or manual operation mechanisms. The simple elastic mechanism significantly reduces device complexity compared to alternative automated solutions.
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
Enhances heat dissipation efficiency by automatically obstructing airflow in empty fan positions, improving cooling performance and convenience through adjustable ventilation control.
Implementation Method 1
a guiding plate (23) rotatable about an axis parallel to the extending direction of the guide slots (2122), a torsion spring (24)
Data Source
AI summary
An exemplary embodiment of a fan module includes fan units, and each fan unit includes a box-shaped shell, a guiding plate, and a torsion spring. The box-shaped shell includes a bottom plate and two opposite side walls substantially perpendicular to the bottom plate, and each side wall has a vent defined therein. The guiding plate is rotatable relative to the bottom plate of the shell. The torsion spring includes a first torsion arm, a second torsion arm, and a coil portion. The first torsion arm and the second torsion arm are urged against the bottom plate and the guiding plate respectively by torque force applied from the coil portion. Thereby, the guiding plate is driven to a position adjacent and generally parallel to one of the side walls to obstruct the corresponding vent by the second torsion arm.