Segmented Positive Displacement Rotor Housing

摘要

This disclosure concerns an advanced nutating positive displacement device having a high power to mass ratio and low production cost. This device in one example forms an exemplary pump as will be discussed in detail. The examples disclosed herein are of the rotary positive displacement type, but in a class by themselves. The devices are formed by a nutating rotor having a face comprising lobes and valleys, and a fixed stator also having a face with lobes and valleys. The face of the rotor opposes and cooperates with the face of the stator. The opposing faces define chambers that change volume with rotation of the rotor.

主权项

1. A fluid flow apparatus comprising:
a. a housing; b. the housing comprised of a first housing portion having a first inner surface and a second housing portion adjacent the first housing portion having a second inner surface defining a rotor cavity; c. a first rotor within the rotor cavity having a first axis aligned with a first shaft having an axis of rotation, a front face comprising lobes and valleys, and a frusta-spherical radially outward surface; d. a second rotor within the rotor cavity having a second axis offset from co-linear to the first axis, a front face comprising lobes and valleys which intermesh with the lobes and valleys of the first rotor; e. an off-axis shaft aligned with the second rotor, fixed to rotate with the first shaft, and having an axis which is offset from the axis of the first rotor; f. wherein the lobes and valleys of the first rotor are substantially in fluid tight seal to the lobes and valleys of the second rotor at least at two points during operation of the fluid flow apparatus; and g. at least one shim positioned adjacent the off-axis shaft so as to re-position the first shaft relative to the second rotor non-collinear with the axis of the first shaft.