摘要
为了建立负修正角、旋转半径小于基圆半径、对称腔非同步排气的涡旋压缩机几何模型,对排气腔之间的侧向泄露面积、吸气面积重新进行了定义,在几何分割和格林公式的基础上,获得了吸气腔容积、第一压缩腔容积、排气腔容积、吸气面积、泄露面积、排气面积的表达式或求解方法。计算结果表明,吸气过程结束阶段存在预压缩,涡旋段压缩过程速率恒定,进入圆弧修正部位后,压缩速率降低。排气腔RD排气面积略有增大后逐渐减小,排气腔LD排气面积逐渐增加,主轴转动半周逐渐减小,转角为4.247弧度时,压缩腔LC1开始排气,排气面积逐渐增加。
To establish the geometry of scroll compressor with negative modified angle,rotate radius less than base circle radius and asymmetric discharge,the leakage area between discharge chambers and suction area are redefined,Based on the geometric partitioning and green formula,the expression or solution method is established of suction chamber volume,1st chamber volume,discharge chamber volume,suction area,leakage area and discharge area The calculation results show that the air is precompressed at the end of suction progress,the compression rate is constant in the compression chamber composed of involutes,and get lower in the compression chamber composed of involutes and circles,the discharge area of RD chamber increases slightly,then decreases gradually.The discharge area of LD chamber increases,then decreases gradually after the main shaft rotates π radians.The discharge of LC1 chamber begins when the main shaft rotates 4.247 radians.
出处
《机械设计与制造》
北大核心
2014年第6期230-232,235,共4页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(61262048)
关键词
涡旋空气压缩机
负修正角
非对称排气
几何模型
排气面积
Scroll Compressor
Negative Modified Angle
Asymmetric Discharge
Geometry Model
Discharge Area
