某航天电子设备金属3D打印相变机壳设计

相变材料在相变过程中可以储存和释放大量热量,且相变过程近似等温.利用相变材料的这一特性可以实现对物体的温度控制,尤其适用于外部环境恶劣、热耗变化大、对温度稳定性要求较高的电子设备.某航天电子设备具有短时工作、功率密度高的特点,利用合适温度的相变材料来增加系统热沉是解决其散热问题的一种重要手段.文中基于相变控温技术完成了...

Design of Metal 3D Printing Shell with PCM for a Certain Aerospace Electronic Equipment

The phase change material(PCM) can store and release a large amount of heat during phase transition process and this process is approximately isothermal. Accordingly, PCM can be used for temperature control. It is especially suitable for the electronic equipment which works in harsh environment or has large heat consumption or high requirement for thermoregulation. A certain aerospace electronic equipment has the characteristics of short-time operation and high power density. Using PCM with suitable temperature to increase heat-sink of this system is an important means to solve its heat dissipation problems. In this paper thermal design of the phase transition shell of the aerospace electronic equipment is completed by PCM temperature control technology and conformal design of the shell and complex structure equipment is realized by metal 3D printing technology. The research results show that the metal 3D printing shell has obvious advantages in terms of temperature index, weight index, rocessing realization and development cycle.