Comparative Study Regarding Two Constructive Solutions for Conical Worm from Pump Construction

Abstract

In this paper two constructive solutions for central conical worm from composition of helical compressor are analyzed. First is a worm with cycloid frontal profile and the second one is a worm with circle arc frontal profile. The conjugated worm for the conical rotor is determined based on the fundamental theorems of surface enwrapping. Afterward, the area between the flanks of lobes for drive and driving worms are calculated in sections perpendicular to the axis of driving worm. For equals dimensions of worms it is estimated the volume included between the drive and driving worms, as determining factor defining the compressor flow.