通用涡旋型线中心压缩腔几何修正方法研究

涡旋压缩机具有结构简单、效率高、节约能源、噪声小等优点，但实现上述诸多优点，其动、静涡旋盘的装配精度的要求非常高。为了解决这一难题，在涡旋压缩机的设计研究中，对涡旋型线进行修正的设计方法就显得非常重要。利用Pro／Engineering工程软件，通过修正通用涡旋型线的中心压缩腔的几何形状，可使得顶隙容积达到零间隙的效果。在没有间隙或者干扰存在的情况下，两对涡旋型线完全啮合时，接触发生在一点或者一条线上，同时，修正之后的涡旋压缩机中心压缩腔的包裹壁厚得以增厚，增加了根部的强度。由于根部附近段壁厚的增加，使一对涡旋腔在压缩终了瞬时构成的一对啮合封闭腔容积迅速减小，因而压缩比得到进一步提高，同时，使可开设的最大排气孔直径增大，减小了排气阻力．

A Study on Geometry Modification of the Central Portion of General Scroll Profiles

The scroll compressor has many advantages as mentioned before, but a high degree of accuracy during assembly is required between an orbiting scroll and a fixed scroll of a scroll compressor. The design methodology of modification for the scroll profiles is very important for the research of scroll compressor. The geometry at the central portion of a pair of scrolls is modified by using new methodology which is carried out by using PRO/E software. The conclusion is that the top clearance volume can be reached zero clearance. Without the clearance or interference,the contact can be at a point or at one line when the two scrolls are in perfect mesh. At the same time,because of the modification of central portion,the wrap thickness of a scroll can be made thicker than that of the other scrolls.