The study of an innovative volumetric rotary machine is presented in this work. The machine is constituted by a stator and a number of pistons rotating inside the stator and attached to a crank. Due to the particular type of solution, this mechanism realizes for every piston a chamber, that varies its volume during crank rotation, and consequently it can be used to realize a volumetric rotary machine. In the paper the geometrical constraints that characterize the mechanism are analyzed, in order to obtain the equation of the stator profile, using an analytical approach. Once the stator profile is determined and appropriate design parameters settled, the analysis of the motion permits to numerically determine the profile of the rolling pistons. Starting from the geometry, the specific displacement and the maximum compression ratio can be calculated as a function of design parameters. Finally, the analysis is focused on the unbalanced inertia forces generated by the mechanism during its motion. The results obtained permit to choose the design parameters for a particular application, showing that the mechanism can be suitable for pumps, compressors and pneumatic engines
Introductory Analysis of an Innovative Volumetric Rotary Machine
MIMMI, GIOVANNI;BONANDRINI, GIOVANNI;ROTTENBACHER, CARLO EUGENIO ALESSANDRO
2007-01-01
Abstract
The study of an innovative volumetric rotary machine is presented in this work. The machine is constituted by a stator and a number of pistons rotating inside the stator and attached to a crank. Due to the particular type of solution, this mechanism realizes for every piston a chamber, that varies its volume during crank rotation, and consequently it can be used to realize a volumetric rotary machine. In the paper the geometrical constraints that characterize the mechanism are analyzed, in order to obtain the equation of the stator profile, using an analytical approach. Once the stator profile is determined and appropriate design parameters settled, the analysis of the motion permits to numerically determine the profile of the rolling pistons. Starting from the geometry, the specific displacement and the maximum compression ratio can be calculated as a function of design parameters. Finally, the analysis is focused on the unbalanced inertia forces generated by the mechanism during its motion. The results obtained permit to choose the design parameters for a particular application, showing that the mechanism can be suitable for pumps, compressors and pneumatic enginesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
