摘要
热电制冷恒温器是一种能够提供低温恒温条件的装置,被广泛应用于低温制冷、低温超导和临床医疗等领域。介绍了一种基于半导体制冷原理的小型高精度恒温器的设计过程及其温控系统的结构。系统设计分别从制冷器壳体结构和恒温控制器的优化设计入手,采取具有智能积分补偿环节的PID控制器,并在实验中实现了常温下-40～20℃的可调温范围,通过比对,调温精度与0.1℃分度的二等标准水银温度计显示值高度一致,且热负荷在25mW～3W范围内,从设定温度开始工作用时不超过10min。
Cryostat is a low-temperature device that can provide low and constant temperature. In this paper, the design process, the architecture of a kind of small-scale and high precision temperature controlling device which based on the principles of semiconductor refrigeration was discussed. Through optimizing the parameters of this system, the device obtained the ability of thermostat ranging from - 40 ℃℃ to 20 ℃ at room temperature, and the temperature controlling precision was equal to the 0.1 ℃ indexing of the second standard mercury thermometer. When the heat load ranges from 25 mW to 3 W, it is needed no more than ten minutes to reach the setting temperature.
出处
《陕西理工学院学报（自然科学版）》
2011年第3期1-5,共5页
Journal of Shananxi University of Technology:Natural Science Edition
基金
陕西省教育厅专项科研计划基金资助项目(02JK046
09JK382)
关键词
热电制冷
恒温控制
结构
thermoelectric refrigeration
constant-temperature controlling
structure
