7kW轴快流CO_2激光器的热平衡分析及换热器设计  

Heat balance analysis of 7kW fast axial flow CO_2 laser and design of the heat exchanger

作　　者：黄鸿雁[1] 王又青[1] 李晴[1] 

机构地区：[1]华中科技大学光电子科学与工程学院,武汉430074

出　　处：《激光技术》2010年第2期240-242,246,共4页Laser Technology

摘　　要：为了解决高功率轴快流CO_2激光器设计中的主要问题——清除激活区热量,采用对流冷却的方法,分析了高功率轴快流CO_2激光器的内部循环热交换过程,建立了热量的平衡方程;同时针对高功率激光器热负荷量大、总体结构受限、风机特定的工作特点,分析比较各类换热器的换热特性并最终选择结构紧凑、换热系数高、流阻小的矩形翅片圆管束换热器作为激光器的散热部件,最后针对研制中的7kW轴快流CO_2激光器进行了换热器的设计和换热计算,得到可以实现37.4kW的换热量的结果。结果表明,选用的换热器能满足所设计的轴快流CO_2激光器的换热要求。In order to overcome the main issue in the design of high power fast axial flow CO2 lasers, i.e. , cleanup of the heat in the active region, considering the inner heat cycle and characteristics of the 7kW fast axial flow CO2 laser, the heat balance equation was established with convective cooling method. Meanwhile, in view of the big thermal load quantity, the whole structure limitation and the specific turbo blower of the high power laser, comparing various types of heat exchangers, the rectangle fin circle tube heat exchanger was chosen as the laser＇ s radiator in light of the prominent heat transfer capacity and compact structure. Further more designed the heat exchanger and calculated the heat conducting for the 7kW laser. The quantity of heat exchange is 37.4kW. The results indicate that the rectangle fin circle tube heat exchanger is suitable to the fast axial flow CO2 laser.

关 键 词：激光器 高功率CO2激光器 对流冷却 换热性能 换热器 

分 类 号：TN248.22[电子电信—物理电子学]