Patent ID: 11898560
Assignee: PERFOBORE INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. Working members of a rotary hydraulic or pneumatic machine manufactured in the form of a gerotor mechanism having a stator and a rotor, wherein the stator and the rotor have a cycloidal face profile, wherein a number of teeth of the stator is one more than a number of teeth of the rotor, wherein a ratio between a contour diameter (by cavities of teeth of the stator) Dκ and a gear eccentricity e (Dκ/e), which depends on a combination of dimensionless geometric coefficients (eccentricity coefficient co=r/e, tooth shape coefficient ce=rμ/e and displacement coefficient cΔ=Δx1/e) used in the formation of the cycloidal face profile by a method of running-in a cycloidal rack is assigned based on achievement of a maximum open area for a given kinematic ratio i=z2:z1 while maintaining smoothness of teeth contours and an absence of interference of conjugate profiles,
where
r—generating circle radius;
rμ—equidistant radius;
Δx1—displacement of the basic rack contour relative to the generating line;
z1, z2—number of stator and rotor teeth; and, wherein the dimensionless geometric coefficients of the cycloidal face profile are in the following ranges:

Dκ/e=6 to 24,

co=1.05 to 1.2,

ce=0to 1.75,

cΔ=−2.5 to 0.5, and, wherein lower values of the ratio Dκ/e correspond to a smaller number of teeth of the stator and of the rotor.