Backflow Prevention Device for Server Heat Dissipation
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Solution Overview
Problem
Server systems face overheating issues due to backflow in heat dissipation modules, which can lead to malfunction and damage, as existing solutions require additional active components to prevent backflow.
Innovation Solution
A backflow prevention device featuring a channeled body with enlarging and shrinking sections and a movable part that blocks airflow when backflow occurs, eliminating the need for additional active switches and simplifying design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional active components (such as switches or valves) are installed to prevent backflow, then backflow prevention capability is improved, but device complexity increases
Solution Approach 1:
The moving part automatically responds to backflow conditions without external control. When backflow occurs, the moving part is pushed by the reversed airflow to block the first opening, achieving self-regulating backflow prevention without requiring external switches or valves
Solution Approach 2:
The patent removes the need for additional active components (switches, valves, sensors) by using the airflow itself to drive the moving part. The system extracts the control function from separate active components and integrates it into the passive moving part that responds directly to flow conditions
2Reliability
If the size of the moving part is larger, then blocking capability is improved, but ease of movement deteriorates
Solution Approach 1:
The patent optimizes the size parameter of the moving part to satisfy two conditions: large enough to block the first opening effectively when backflow occurs, but small enough to be moved by the airflow force. The size is specifically designed relative to the opening dimensions to achieve both blocking capability and ease of movement
Solution Approach 2:
The moving part transitions between static and dynamic states based on flow conditions. During normal forward flow, the moving part remains stationary or moves easily. During backflow, the reversed airflow provides sufficient force to move the moving part to the blocking position, demonstrating dynamic adaptability
3Productivity
If the channeled body structure is optimized for backflow prevention, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated structure: the channeled body serves as both the flow path structure and the housing for the moving part, while the moving part simultaneously controls flow direction and prevents backflow. This merging eliminates the need for separate components and reduces overall device complexity
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 backflow, enhances heat dissipation efficiency, and increases the service life and performance of server systems by controlling airflow direction and amount without additional active components.
Implementation Method 1
When an airflow back flows from each of the at least one second opening to each of the at least one first opening of the at least one channeled body, the airflow drives each of the at least one moving part to enable each of the at least one moving part to block each of the at least one first opening
Implementation Method 2
heat dissipation modules, such as heat dissipation fans, may be additionally installed to the server to dissipate heat for the electronic part
Data Source
AI summary
A backflow prevention device includes at least one channeled body and at least one moving part. The at least one channeled body includes at least one first opening and at least one second opening. Each of the at least one channeled body gradually enlarges from each of the at least one first opening to each of the at least one second opening. Each of the at least one moving part is movably disposed in each of the at least one channeled body. A size of the moving part is less than a size of the second opening. When an airflow back flows from the second opening to the first opening, the airflow drives the moving part to enable the moving part to block the first opening. A server system is also disclosed.