Spring-Loaded Heat Dissipating Shutter for Airflow Backflow Prevention
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Solution Overview
Problem
Conventional heat dissipating systems face efficiency issues due to airflow backflow when fans stop or fail, as gravity-dependent shutters do not adequately prevent airflow reversal, leading to reduced cooling efficiency and design limitations.
Innovation Solution
A heat dissipating structure utilizing a resilient component to drive a shutter to close an opening, preventing airflow backflow, with a linkage system and adjustable resilient force to manage airflow and maintain efficiency across varying fan powers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gravity-dependent shutter is used to cover the opening when the fan stops, then the backflow prevention function is achieved, but the cooling efficiency is decreased because part of the opening remains covered due to force equilibrium between gravity and airflow
Solution Approach 1:
The invention changes the driving force parameter from gravity to elastic force of a spring. The spring can be adjusted to provide different resilient forces, allowing the shutter to achieve complete closure when the fan stops while maintaining full opening when the fan operates, thus resolving the contradiction between backflow prevention and cooling efficiency
Solution Approach 2:
The invention introduces a dynamically adjustable spring mechanism that can adapt its resilient force. The spring enables the shutter to dynamically transition between fully open and fully closed positions based on fan operation state, eliminating the static force equilibrium limitation of gravity-dependent systems
2Strength
If the shutter is made heavier to increase structural strength, then the shutter can better resist airflow, but the fan with low power becomes unsuitable due to insufficient driving force
Solution Approach 1:
The invention changes the force generation mechanism from gravity (fixed by mass) to elastic force (adjustable by spring properties). The spring's resilient force can be tuned independently of the shutter's mass, allowing the system to work with fans of various power levels while maintaining adequate shutter strength
Solution Approach 2:
The spring acts as a counterweight mechanism, providing a resilient force that balances the shutter's weight and airflow pressure. This allows the shutter to have sufficient structural strength without requiring excessive mass, making the system adaptable to low-power fans
3Adaptability or versatility
If the angle between the shutter and opening is adjusted to maintain force equilibrium, then the system adapts to different fan powers, but the opening is partially covered and cooling efficiency is reduced
Solution Approach 1:
The invention implements a dynamic spring mechanism that allows the shutter to achieve complete opening positions when the fan operates, rather than maintaining a partial coverage equilibrium angle. The spring force can be adjusted to ensure full opening for adequate cooling while providing complete closure for backflow prevention
Solution Approach 2:
The spring's resilient force parameter can be adjusted to optimize the shutter's opening angle during fan operation. This allows the system to achieve both full opening for maximum cooling efficiency and complete closure for effective backflow prevention, adapting to different fan power levels
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
The solution effectively prevents airflow backflow, maintaining cooling efficiency and allowing for adjustable design without the limitations of gravity-dependent systems, suitable for both low and high-power fans, while reducing manufacturing costs.
Implementation Method 1
a resilient component for providing a resilient force to the shutter so as to rotate the shutter to a close position
Implementation Method 2
a fan for driving airflow so as to dissipate the heat generated by the heat source
Implementation Method 3
a heat dissipating module for dissipating heat generated by the heat source
Data Source
AI summary
A heat dissipating structure includes a frame. An accommodating space is formed inside the frame for accommodating a fan, and an opening is formed on a lateral side of the frame. The heat dissipating structure further includes at least one shutter connected to the frame in a rotatable manner. The fan is disposed on a side of the shutter. The shutter prevents airflow driven by the fan from flowing back to the other side of the shutter through the opening when the shutter rotates to a close position. The heat dissipating structure further includes a resilient component for providing a resilient force to the shutter so as to drive the shutter to the close position.