Abstract
The conical rotary compressor represents a solution for gases compression, for relatively small flow, in conditions of a superior energetic efficiency. Although the theoretical solution for the helical conical compressor was elaborated decades ago, a viable technology solution become possible at industrial level only after the development of machine tools with numerically controlled axes. In this paper is proposed a study, analytical and graphical, concerning the geometry of conical rotary compressor’s rotors, modelled by rapid prototyping technology. The propose modelling allow to elaborate various constructive forms for conical compressor’s rotors.
Highlights
The conical rotary compressor [1] represents a solution for gases compression, in the domain of low flows and high pressures [2]
For the crossing section of driving rotor of the helical conic compressor is accepted a form composed from an assembly of curves, epicycloids—hypocycloid, see figure 1
The reference systems are defined: xy is the fixed reference system, with origin onto the rotor’s axis, xeye — auxiliary fixed reference system, joined with the re roulette axis; xiyi — auxiliary fixed reference system joined with the ri roulette axis; XeYe — mobile reference system, joined with re roulette and XiYi — mobile reference system joined with ri roulette
Summary
The conical rotary compressor [1] represents a solution for gases compression, in the domain of low flows and high pressures [2]. The constructive solution for such compressor with active elements of the conical helix surfaces has been known for over half a century, but the industrial applications of these constructions become possible, from technological point of view, only after development of machine tools with several numerically controlled axis [1]. The effectiveness for this compressor type was theoretically and experimentally proven, from the energy point of view [2], [3]. A 3D model by rapid prototyping for the worms was made
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