基于通用型线的涡旋齿厚研究

he characteristic stduy of scroll wrap has been carried out based on general profile. The scroll machine’s pitch lines are classified as a-type and b-type. A-type pitch line forms orbitting scroll’ outer-line and fixed scroll’s inner-line. B-type pitch line forms orbitting scroll’s inner-line and fixed scroll’s outer-line. The normal wrap thickness, the all wrap thickness and the wrap thickness coefficient are defined. The calculation formula for two kinds of wrap thickness are obtained and recommendable value of minimum normal thickness for equal thickness scroll wrap is provided in common use. The study shows that the inner-line and out-line of scroll wrap can be expressed by the middle line and the component of scroll wrap, the normal thickness queal to the all thickness when the inner-line is parallel to the out-line, the wrap thickness coefficient can be determined by the volume ratio of scroll machine, the wrap thickness coefficient can be one of the essential parameters.