Burn-in Chamber Airflow Recirculation for Temperature Uniformity
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Solution Overview
Problem
Conventional walk-in chambers consume excessive power to maintain temperature and often fail to provide uniform heating, as they rely on heaters and exhaust fans, which are inefficient and costly, and do not effectively utilize waste heat from the device under test.
Innovation Solution
A burn-in chamber design incorporating a guiding plate, air flow plate, partition plate assembly, and fan that recirculates and redistributes the hot air generated by the device under test, using a ventilation structure to ensure even temperature distribution and reduce power consumption by leveraging the device's waste heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heaters and exhaust fans are used to maintain temperature, then the chamber can reach predetermined temperature, but power consumption increases significantly
Solution Approach 1:
The system uses the waste heat generated by the device under test itself to maintain the chamber temperature, making the device serve its own heating needs. The fan recirculates hot air from the device back into the chamber, eliminating the need for external heaters and significantly reducing power consumption.
Solution Approach 2:
The invention converts the waste heat that would otherwise be lost from the device under test into a useful resource for heating the chamber. By recirculating this previously wasted thermal energy through the fan-driven air circulation system, the chamber maintains temperature without requiring additional energy input from external heaters.
2Temperature
If multiple heaters are used to heat the air, then the chamber can reach predetermined temperature, but temperature distribution becomes uneven
Solution Approach 1:
The system uses a fan-driven pneumatic circulation system to move hot air throughout the chamber. The fan creates continuous air circulation that distributes thermal energy uniformly across the chamber volume, eliminating the temperature unevenness caused by localized heating from multiple heaters.
Solution Approach 2:
The fan operates continuously to recirculate and redistribute hot air throughout the chamber, maintaining constant motion of thermal energy. This continuous circulation ensures uniform temperature distribution by constantly mixing hot and cool air regions, preventing temperature stratification that occurs with static heater-based systems.
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 recycles and redistributes the hot air to maintain uniform temperature within the chamber, reducing power consumption and operational costs while ensuring efficient heating, thereby addressing the inefficiencies of conventional systems.
Implementation Method 1
the fan is disposed in the return channel. When the fan is active, air from the receiving room passes through the air flow plate and is guided to the return channel via the guiding plate
Implementation Method 2
the air flow plate has a ventilation structure, and the guiding plate is located between the side wall and the air flow plate
Data Source
AI summary
A burn-in chamber is provided, configured to provide the required temperature for a device under test (DUT), including a side wall, a guiding plate, an air flow plate, a partition assembly, and a fan. The air flow plate has a ventilation structure, and the guiding plate is located between the side wall and the air flow plate. The partition assembly is disposed on both sides of the air flow plate. The partition assembly and the air flow plate together form an accommodating space for accommodating the DUT. The partition assembly forms a return channel with respect to the other side of the accommodating space with the side wall. When the fan is active, air from the accommodating space passes through the air flow plate and is guided to the return channel via the guiding plate, and air is returned to the accommodating space through the return channel.