流体机械2023，Vol.51Issue(11)：43-50,8.DOI:10.3969/j.issn.1005-0329.2023.11.007
双泵体多气缸旋转式压缩机低振动技术研究
Study on low vibration technology of multi-cylinder rotary compressor with dual pumps
摘要
Abstract
In view of presence of two excitation sources of gas torque fluctuation and crankshaft dynamic unbalance for the rotary compressor with single pump,an idea of multi-cylinder rotary compressor with twin pumps was proposed to realize great reduction of gas torque fluctuation and dynamic unbalance of crankshaft of the rotary compressor from the excitation source.The technical solution was to install a multi-cylinder pump at each terminal of the motor,and connect the rotor of the motor to two crankshafts of the twin pumps.In this way,one motor can drive two crankshafts of the twin pumps to work at the same time.The rotor angle of each cylinder was designed in an arithmetic progression,and the phase difference of the rotor angle was equal to 360°/Z,where Z is the number of cylinders,so that the amplitude of gas torque fluctuation could be minimized.The eccentric parts of the single crankshaft were arranged in phase difference of 180° and the twin crankshafts were axisymmetrically arranged,so that the inertial force and inertia moment of eccentric parts were self-balanced.The key technology of dual shafting alignment was broken through.A horizontal four-cylinder compressor prototype with twin pumps was manufactured,and vibration test of the prototype was carried out.The test results show that the prototype runs smoothly and works as expected within the operating rotational speed range,which verifies the structural feasibility of twin pumps.Moreover,both the casing and seat vibration of the prototype is less than 1/6 of that of the single-pump model with the same displacement,hence it has excellent low vibration performance,which verifies the effectiveness of low vibration theory and method.关键词
旋转式压缩机/双泵体/多气缸/等相位差/自平衡/低振动Key words
rotary compressor/twin pumps/multiply gas cylinders/equal phase difference/self-balancing/low vibration分类
机械制造引用本文复制引用
张赣波..双泵体多气缸旋转式压缩机低振动技术研究[J].流体机械,2023,51(11):43-50,8.基金项目
广东美芝制冷设备有限公司先行研究项目(RS00021028) （RS00021028）
