Synthetic Jet Equipment With Segmented Intake And Exhaust
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Solution Overview
Problem
Conventional synthetic jet actuators suffer from reduced heat dissipation efficiency due to the outlet being used as both an intake and an exhaust, causing heated air to be drawn back into the chamber, which increases internal temperatures and hampers heat transfer.
Innovation Solution
The synthetic jet equipment features a base, frame, pump diaphragm, and valve diaphragm that create a chamber with distinct intake and outlet functions, utilizing magnetic units and coils to control air flow, ensuring that external air is drawn in and heated air is ejected without reversal, enhancing heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the outlet is used as both intake and exhaust in conventional synthetic jet actuators, then the device complexity is reduced, but heat dissipation efficiency deteriorates due to heated air being drawn back into the chamber
Solution Approach 1:
The patent divides the single outlet into two separate outlets: a first outlet for exhaust and a second outlet for intake. This segmentation prevents heated air from being drawn back into the chamber, thereby improving heat dissipation efficiency while maintaining relatively simple device structure.
Solution Approach 2:
The patent extracts the intake function from the outlet by introducing a separate second outlet dedicated to intake. This extraction eliminates the harmful effect of heated air recirculation while preserving the overall simplicity of the synthetic jet actuator design.
2Power
If the diaphragm moves upward to compress the chamber and eject air, then heat dissipation capability is improved, but the risk of heated air being drawn back increases when the diaphragm moves downward
Solution Approach 1:
By segmenting the airflow paths into separate exhaust and intake outlets, the patent ensures that the compression stroke (diaphragm moving upward) always results in clean exhaust, while the expansion stroke (diaphragm moving downward) draws in fresh air through the dedicated second outlet, preventing heated air recirculation and maintaining reliable heat transfer efficiency.
3Manufacturing precision
If a single outlet is used for both intake and exhaust, then the manufacturing precision requirements are reduced, but heat transfer efficiency deteriorates due to temperature rise inside the chamber
Solution Approach 1:
The patent segments the single outlet into two separate outlets with distinct functions. This segmentation allows precise control over airflow directions, ensuring that exhaust and intake streams remain separate, thereby maintaining effective heat transfer efficiency without significantly increasing manufacturing precision requirements.
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 consistently ejects cold air and improves heat exchange efficiency by preventing external air from being drawn back into the chamber, thereby increasing the effectiveness of heat dissipation compared to conventional synthetic jet actuators.
Implementation Method 1
When the first member moves in a first direction, the second member moves in a second direction opposite to the first direction, and the external air flows into the chamber through the inlet. When the first member moves in the second direction, the second member moves in the first direction, such that the air is exhausted from the chamber through the outlet
Data Source
AI summary
A synthetic jet equipment is provided, including a base, a frame fixed to the base, a first member, a pump diaphragm, a second member, and a valve diaphragm. The pump diaphragm connects the first member to the frame, and the valve diaphragm connects the second member to the frame. The base, the frame, the first member, the pump diaphragm, the second member, and the valve diaphragm define a chamber forming an intake and an outlet. When the first member moves in a first direction, the second member moves in a second direction opposite to the first direction and the external air flows into the chamber through the inlet. When the first member moves in the second direction, the second member moves in the first direction, such that the air is exhausted from the chamber through the outlet.