US 11,898,560 B1
Working members of a rotary hydraulic or pneumatic machine
Dmitry Fedorovich Baldenko, Moscow (RU); Fedor Dmitrievich Baldenko, Moscow (RU); Ilya Alexandrovich Lyagov, Ufa (RU); Alexander Vasilievich Lyagov, Ufa (RU); and Yang Yao, Beijing (CN)
Assigned to PERFOBORE INC., Road Town (VG)
Filed by Perfobore Inc., Road Town (VG)
Filed on Jul. 22, 2022, as Appl. No. 17/871,399.
Int. Cl. F01C 1/02 (2006.01); F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 18/00 (2006.01); F04C 2/00 (2006.01); F04C 2/10 (2006.01); F04C 18/10 (2006.01); F04C 18/08 (2006.01); F04C 2/08 (2006.01)
CPC F04C 2/103 (2013.01) [F04C 2/084 (2013.01); F04C 18/084 (2013.01); F04C 18/10 (2013.01); F04C 2250/301 (2013.01)] 2 Claims
OG exemplary drawing
 
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.