Working Member of a Helical Rotary Machine

摘要

Disclosed are rotary positive displacement machines capable of acting as an engine and as a pump, serving to improve the profile of working members of helical rotary engines, compressors and pumps. An actuator is comprised of a pair of rotors having engaged helical teeth. The rotors are disposed in chambers which encircle both. The working areas of the profiles of the teeth in an engaged pair are delineated in cross-section by portions of a cycloidal curve for one rotor and by arcs of circumferences which are eccentrically offset from the axis of the second rotor. Such a profile of teeth produces an eccentrically cycloidal engagement capable to work efficiently at very high rotor rotation speeds. The presence of power contact and low sensitivity to gearwheel skews allow for working with nonhomogeneous media, including those containing solid inclusions.

主权项

1. An actuator of a helical rotary machine, the actuator comprising pair-wise interacting helical rotors disposed in an encircling chamber, wherein a tooth profile of one rotor of the helical rotors in the pair is formed by convex segments of front portions of a cycloidal curve, and wherein working areas of teeth of a second rotor in the pair are formed by arcs of circumferences eccentrically offset from a rotor axis, so that helical teeth in the pair of rotors form an eccentrically cycloidal engagement.