磁悬浮驱动式无油涡旋压缩机驱动力分析

为了解决无油涡旋压缩机的润滑问题,提出一种磁悬浮驱动式无油涡旋压缩机。基于涡旋压缩机的力学理论,充分考虑到无油涡旋压缩机工作时的实际状况,结合磁悬浮技术,设计出一种可以避免使用轴承和防自转装置的无油涡旋压缩机。通过数值计算软件对磁悬浮驱动式无油涡旋压缩机的动涡盘进行受力计算,详细分析了涡旋齿节距不同情况下动涡盘在不同转角下的受力;利用有限元分析软件对无油涡旋压缩机提供驱动力的E-I型电磁铁、U-I型电磁铁和U-U型电磁铁在不同气隙下的吸引力进行有限元仿真,并做了对比说明;最后把涡旋压缩机的受力与U-I型电磁铁的驱动力进行有效比较。结果表明:该新型涡旋压缩机在理论上是完全可以实现其正常工作,且有效避免了轴承与防自转装置的使用,同时还兼具了磁悬浮技术低磨损、无污染等特点。

Analysis on Driving Force of Magnetic Suspension Driven Oil Free Scroll Compressor

In order to solve the problem of the lubrication of oil free scroll compressor , a magnetic levitation driven oil free scroll compressor is proposed .Taking full account of the actual working situation of the oil frees croll compressor , and combining with the magnetic levitation technology , an oil free scroll compressor which can avoid the use of bearing and anti -self-rotation device was de-signed based on the mechanics theory of scroll compressor .Through the numerical calculation software , the dynamic vortex disk of the magnetic levitation driven oil free scroll compressor was calculated on force , and the force of the dynamic vortex disk under different ro-tating angles was analyzed in detail .The finite element analysis ( FEA) software was used to provide the driving force of the E-I, U-I and U-U type electromagnet in the oil free scroll compressor under the different air gap of the attraction for the finite element simula -tion, and a comparison was made and described .Finally the scroll compressor by force and U-I type electromagnet driving force were carried out for a valid comparison .Results show that the new type of scroll compressor can fully realize the normal work in theory , and effectively avoid using of the bearing and anti-self-rotation device, at the same time, combines the magnetic levitation technology with low abrasion, no pollution and other characteristics .