双层微通道换热器弯曲过程模拟及翅片损伤行为  

Experimental study on fin's damage of 2-piece microchannel parallel flow heat exchanger

作　　者：王卓[1] 张志伟[1] 李大永[1,2] 彭颖红[1,2] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《塑性工程学报》2013年第5期22-26,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51105249);国家科技支撑计划资助项目(2012BAF01B06);国家重点实验室开发基金资助项目(MSV201205)

摘　　要：对微细通道平行流式换热器进行成形加工的工艺目前还不够成熟,尤其是在多层换热器的弯曲过程中,常会出现翅片压溃等现象。该文基于双层微通道换热器的弯曲过程进行模拟和实验,研究双层微通道平行流式换热器的无模弯曲过程;分析换热器翅片发生损伤的原因,并通过对不同状态下的翅片进行压缩实验进行验证;实验结果表明,夹具与换热器之间的摩擦力是造成翅片压溃的主要原因。The bending process, applied in the dieless bending for the forming of microchannal parallel flow heat exchanger, was immaturity. Especially in bending process of the multiple layers heat exchanger, the phenomenon of fin crashing-down occured frequently. This paper studied the dieless bending process based on the simulations and experiments. The reasons for the damage occurred on the fins was analyzed, and were verified by compression tests of fins. Experiment results showed that the friction be tween the heat exchanger and grippers was the main reason for the damage.

关 键 词：微细通道平行流式换热器 无模弯曲 翅片压溃 摩擦 

分 类 号：U464.333[机械工程—车辆工程]