摘要
针对内窥境等医疗器械,提出了一种通过电磁感应加热感应导体,再通过感应导体加热其周围石蜡的微型机械驱动器。通过对石蜡热膨胀性能和电磁感应加热的试验发现,石蜡在其熔点温度附近具有很大的体膨胀系数,试验所用石蜡的熔点在37～39℃之间,体膨胀系数可达到15％,电磁感应加热具有很快的加热速度。在此基础上,制作了6个不同尺寸的驱动器模型,通过对其位移输出性能的试验发现,石蜡热膨胀驱动器具有很大的输出位移。
Aiming at medical apparatus and instruments such as endoscope, a kind of wireless thermal expansion microactuator is designed, it is actuated by thermal expansion of paraffin, which is heated by a thermoseed heated by magnetic induction. Experimental studies on thermal-expansion of paraffin and induction heating are conducted. The results show that paraffin has a large coefficient of expansion in temperature range near its melting point, the paraffin used in the experiment has a melting point ranging from 37 to 39 癈, and its volume expansion coefficient can reach 15%, induction heating has a high heating speed. Based on these experimental studies, six micro-actuator models are constructed, and the characteristics of their displacement output are tested. The results show that the displacement output of paraffin thermal expansion microactuator is very large.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2003年第2期79-83,共5页
Journal of Mechanical Engineering
基金
清华大学中大基金资助项目(20250/200109)。
