High-Pressure Burn-In Test Apparatus with Dynamic Gas Flow Control
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Solution Overview
Problem
Conventional burn-in test devices experience non-uniform temperature distribution, leading to heat accumulation and increased test costs due to lower temperatures near the air inlet, which can damage components and require higher heater power to reach preset temperatures.
Innovation Solution
A high-pressure burn-in test apparatus with a processing chamber equipped with intake and extension manifolds, nozzles, and a fan, where high-pressure gas is ejected to disturb the gas around components, promoting convection and adjusting gas flow rates to enhance temperature uniformity and efficiency through adjustable nozzles, a circulating device, and a pressure varying device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional open burn-in test device uses continuous air circulation for cooling, then heat dissipation is achieved, but temperature distribution becomes non-uniform causing heat accumulation and increased energy consumption
Solution Approach 1:
The system dynamically adjusts gas flow rates through multiple independent control valves (first control valve, second control valve, third control valve) to optimize temperature distribution. The gas circulation is not static but continuously adjusted based on temperature feedback from sensors, allowing the system to adapt to changing thermal conditions and eliminate hot spots while minimizing energy consumption.
Solution Approach 2:
The system changes the physical parameters of gas circulation by introducing high-pressure gas through nozzles and adjusting flow rates through control valves. By varying pressure, flow rate, and circulation patterns, the system optimizes heat dissipation efficiency and temperature uniformity, reducing the energy required for cooling while preventing heat accumulation.
2Productivity
If high-pressure gas is ejected through nozzles to disturb gas around components, then temperature adjustment efficiency is improved, but device complexity increases
Solution Approach 1:
The gas circulation system is segmented into multiple independent pathways with separate control mechanisms. First gas circulation path, second gas circulation path, and third gas circulation path are independently controlled by different valves and sensors, allowing precise local adjustment of temperature and flow rates, thereby improving temperature adjustment efficiency while maintaining manageable system complexity through modular design.
Solution Approach 2:
The system uses pneumatic principles by introducing high-pressure gas through nozzles to actively disturb and circulate gas around components. This pneumatic approach replaces passive convection with active gas flow control, significantly improving temperature adjustment efficiency and heat dissipation effectiveness despite the added complexity of pressure control systems.
3Temperature
If fan speed is increased to improve gas circulation, then heat dissipation efficiency is improved, but energy consumption increases
Solution Approach 1:
Instead of relying solely on increasing fan speed, the system changes the parameters of gas circulation by introducing high-pressure gas through nozzles and using control valves to regulate flow rates. This alternative approach to enhancing gas circulation improves heat dissipation efficiency without the linear increase in energy consumption associated with higher fan speeds, as valve control is more energy-efficient than continuous high-speed fan operation.
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 apparatus achieves quick and uniform temperature adjustment, reducing heat accumulation and test costs by ensuring efficient heating and cooling, thereby protecting components and optimizing the burn-in test process.
Implementation Method 1
a fan is driven to rotate by using a motor shaft, so that the high-pressure gas in a processing chamber generates convection
Implementation Method 2
high-pressure gas is respectively ejected from nozzles to disturb the gas around a component to be tested
Implementation Method 3
a flow rate of gas flowing into the processing chamber is adjusted through a circulating device, to effectively improve the temperature adjustment efficiency, and fully achieve the effect of improving the uniformity of gas temperature distribution
Data Source
AI summary
A high-pressure burn-in test apparatus comprises a burn-in furnace including a high-pressure burn-in furnace cavity equipped with a driving motor, at least one intake manifold, at least one extension manifold equipped with a nozzle, a communicating tube connected to the intake manifold, and a fan. A processing chamber having a test board is formed inside the high-pressure burn-in furnace cavity. The periphery of at least one of the intake manifold is connected to the at least one extension manifold. At least one component to be tested is placed on the test board. High-pressure gas is ejected through the nozzle to disturb the gas around the component to be tested. The fan is installed in the processing chamber. The driving motor drives the fan to rotate, so that the gas in the processing chamber generates convection, to improve the uniformity of gas temperature distribution.