小型快速响应恒温样品池设计  

Design of a Mini Quick Response Constant-Temperature Sample Cell

作　　者：牟永鹏[1] 黄梅珍[1] 黄晋卿[1] 

机构地区：[1]上海交通大学物理系光学工程研究所,上海200240

出　　处：《上海交通大学学报》2009年第8期1233-1237,共5页Journal of Shanghai Jiaotong University

基　　金：上海市科技基金资助项目(061422004)

摘　　要：设计了一种以铝代替水作为热传导介质，采用TEC热电元件，同时集成微型电磁搅拌系统的新型小型化快速响应恒温样品池．用有限元方法对新型样品池的热传导特性进行了模拟分析，结果与实验吻合，且装置可在5～80℃内实现控温精度0．5℃、加热／制冷效率6．7℃／min、占用体积仅0．03m3．该设计有效提高了样品池温度控制的准确性和升降温速度，且结构简单、使用方便，可作为分光光度计附件，实现对样品溶液温度的精确控制．This paper introduced a new design of a mini quick response constant-temperature sample cell with thermo-electric cooler （TEC） as heater/cooler and aluminum, which replaces water, as heat conduc- ting medium. A mini magnetic stir module is also integrated for better heat conducting performance. Mean while, a finite element model for heat analysis of the new cell structure is established in ANSYS and the simulation results of the heat conduction well match the experiment. The new design achieves the temperature control accuracy of 0.5℃ in range of 5-80℃ and heating/cooling rate of 6.7℃/min, which signifi- cantly improves the sample temperature control accuracy and refrigerating speed. The system can be widely used in realm of in-field detection for its brief structure, convenient use and all other merits stated above.

关 键 词：恒温控制 热电制冷 样品池 有限元模拟 

分 类 号：TM924.13[电气工程—电力电子与电力传动] TP272[自动化与计算机技术—检测技术与自动化装置]