PARAMETRIC MODELING OF GEROTOR PUMP

Abstract

Gerotor pumps have compact and simple design, good kinematic characteristics, large efficiencies, and many other advantages relative to other rotary pumps. Because of its good characteristics, gerotor pumps have are widely used. Gerotor pumps are used for hydraulics machines, car engines, compressors, and for many other purposes. Basic components of gerotor pumps are inner and outer rotor. During the investigation of gerotor pumps it is very important to get inner and outer rotor easily as for theoretical investigations as for their production. In this investigation, an i-Logic rule with user form is created in Autodesk Inventor CAD software for automatic design of inner and outer rotor. User from input parameters are: teeth number of outer rotor, pump eccentricity, trochoid radius coefficient and outer rotor width. Generating of inner and outer rotor is possible for any combination of parameters, which fulfills geometric and kinematic constraints, which means that a problem of generating of gerotor is, solved in general case. Simultaneously is also created a meshing kinematics of inner and outer rotor. Application of presented results is reflected in fast creating of different profiles combination and its meshing, which makes meshing analyses much easier. In the framework of future research in this area, planned is CFD analysis for specific gerotors and its experimental verification.