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

Claim 1:
2. 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 minimum 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;, wherein the ratio between the contour diameter and the sear eccentricity of the cycloidal face profile Dκ/e ranges between 15 to 30 based on the combination dimensionless geometric coefficients with the eccentricity coefficient co close to one, and
the combination of the coefficients ce and cΔ are a minimum intersection of the conjugate profiles; and wherein lower values of the ratio Dκ/e correspond to a smaller number of teeth of the stator and of the rotor.