Thermal Shock Test Chamber (Three Zone): Structural Principle and Application Analysis

Thermal Shock Test Chamber (Three Boxes) is used to test the reliability and stability parameters of products under drastic temperature change by simulating the rapid switching environment of extreme temperatures. The equipment for electronics, aerospace, automotive and other fields to provide critical quality verification data to help optimize the product resistance to thermal stress performance.

 
I. Three-chamber structural design

Thermal Shock Test Chamber (Three Zone) contains three independent temperature zones:

High-temperature storage zone: adopts PID-controlled resistance heating system up to 150°C with pre-stored high-temperature airflow.

Low Temperature Storage zone: Dependent on vapor compression refrigeration cycle, the lowest temperature up to -70 ° C (stacked models), storage of low temperature air.

Test zone: rapid switching of high/low temperature airflow through pneumatic dampers (DAMPER), realizing ≤5 seconds of temperature change impact, test samples placed in this area.

Thermal Shock Test Chamber (Three Zone) through the design of pre-cooling / preheating storage box, significantly shorten the temperature switching time, to meet the MIL-STD-883 and other standards on the rate of temperature change requirements.

II. The core sub-system features

Refrigeration system:

Single-stage compressor for conventional low temperature (-40°C), the duplex system can be extended to -70°C or below.

Water-cooled condenser to improve heat dissipation efficiency and reduce energy consumption (Water-cooled models reduce energy consumption by approximately 18%).

Heating system:

Nichrome resistance wire provides ≥15°C/min heating rate, SSR solid state relay precisely regulates power.

Control system:

PID + BTC algorithm to achieve ± 0.5 ° C temperature stability, touch screen interface to support customized temperature curve.

The subsystems of the thermal shock test chamber (three zone) work together to ensure the repeatability and accuracy of the test in extreme environments.

III. Airflow and sensing technology

air circulation:

centrifugal fan to form turbulence - laminar flow mixed wind field, the temperature uniformity of the test box ± 2 ° C (in line with IEC 60068 standards).

Axial fan to accelerate airflow switching, shorten the temperature equilibrium time.

Sensor system:

platinum resistance (Pt100) and T-type thermocouple real-time temperature monitoring, data feedback to the PLC to achieve closed-loop control.

Cold and thermal shock test chamber (three boxes) through the optimization of airflow path and high-precision sensing, significantly improve the test efficiency (according to arXiv 2025 study, a new generation of models temperature change efficiency by 23%).

IV. Industry application cases

Electronic components:

Test the reliability of the solder joints of 5G chip packages under -55°C to 125°C cycle.

New Energy Vehicles:

Verify the charging and discharging performance degradation of power batteries under extreme cold/high-temperature impacts (Wipro 2024 case).

Aerospace Materials:

Evaluates the deformation threshold of satellite composites in extreme temperature-variable environments in space.

The thermal shock test chamber (three zone) has become the core equipment for cross-industry product quality verification, and its modular design supports customized testing solutions to fit the future needs of new material research and development.