Constant radial clearance gerotor design

Details Constant radial clearance gerotor design Constant radial clearance gerotor design

1990-09-24

1991-07-09

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418171, 29888025, F01C 110, F03C 208, F04C 210

Patent

active

050300725

ABSTRACT:
An improved gerotor gear set and an improved method of selecting design parameters therefore are provided. The gerotor gear set (11) includes an inner rotor (17) defining a tip radius (TR), and an outer rotor (13). The axes of the rotors are offset by an electricity (E). The profile of the inner rotor is generated by a theoretical internal tooth (15) having a generating radius (GR). The relative orbital and rotational motion of the rotors defines, alternately, a single point clearance (SPC) and a double point clearance (DPC). Iterative adjustments are made in the tip radius (TR) and the generating radius (GR) until both the SPC and DPC are approximately equal to a desired tip clearance (TC).

REFERENCES:
patent: 4504202 (1985-03-01), Saegusa

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