In order to achieve good ventilation and heat dissipation effect, the design has two ventilation holes on the door panel of the cabinet, and a dust filter plate is installed at the ventilation hole. The main purpose is to filter dust particles between the machinery to avoid dust accumulation and short circuit of the module. Secondly, the opening of the ventilation hole on the front side of the upper door panel is also advantageous for observation and replacement.
Calculate the model for the airpak software. Because there is a dust-proof plate at the opening, according to the actual effective heat-dissipation area, calculate the opening size of the model as half of the actual opening size. When the upper door opens the venting hole, the simulation calculation model is based on the calculation result and passes the airpak. The software extracts the temperature at the surface of the module, and the temperature distribution around the module when the inter-machine temperature is 45 ° C, 50 ° C. It more clearly expresses the temperature environment around the surface of the module. After the opening of the upper door, the maximum temperature is also above the module.
When the mechanical temperature is 45 ° C, the temperature above the module is 53 ° C, when the mechanical temperature is 50 ° C, the maximum temperature of the module reaches 57 ° C. The mechanical room temperature is 45 °C when the ventilation hole is opened, the temperature distribution around the module, the mechanical room temperature is 50 °C, the temperature around the module when the ventilation hole is opened, and the comparison of the data on the upper door plate when there is no ventilation hole. According to the above calculation method, the average temperature in the cabinet is extracted. For the comparison of the average temperature variation of the module in the cabinet with or without ventilation holes, it is found by comparison that there is a significant decrease in the temperature of the module in the cabinet when there is a heat dissipation hole, especially when the temperature rises above 40 °C. Its role is more obvious.
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