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某空间光谱成像仪光谱范围覆盖可见光、中短波红外、长波红外等多个谱段,配置多台视频处理器和脉冲管制冷机,在狭小空间内形成了复杂的内热源分布。由于上述内热源总热耗高达数百瓦,而制冷机更有低于10℃的控温要求,导致成像仪散热面面积需求很大,同时也造成成像仪功耗资源紧张。文章基于热管理理念,对成像仪内热源进行热设计,使排散废热和控温所用能量最大程度减小,在控制散热面面积的同时节省主动控温功耗,较为圆满地解决了成像仪内热源热设计难题。
Some spatial spectral imager spectral range covering visible light, medium and shortwave infrared, longwave infrared and other spectrum, configure multiple video processors and pulse tube refrigerator, in a small space formed a complex internal heat source distribution. Because of the total heat consumption of the internal heat source is as high as several hundred watts, and the temperature of the refrigerator is lower than 10 ° C, the area of the heat sink of the imager is greatly demanded, and the power consumption of the imager is also limited. Based on the concept of thermal management, the thermal design of the heat source in the imager minimizes the energy used to discharge waste heat and temperature, and saves the active temperature control power consumption while controlling the area of the heat sink, which satisfactorily solves the problems of imager Internal heat source thermal design problems.