Positive displacement machine for fluids, has annular enclosure formed within main chamber and communicated with external via entry and exit conduits, and two protuberances formed around periphery of main rotor in same chamber

摘要

The machine has an outer housing with main and auxiliary chambers storing corresponding rotors parallel in axes. The auxiliary chamber is smaller than the main chamber. The main chamber forms an annular enclosure opened to the outside via entry and exit conduits. At least two protuberances around the main rotor match in circumference and width with the enclosure. The auxiliary rotor has a reduced surface.