Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1978-05-10
1980-09-09
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
418137, 418144, 418148, 418255, F04C 1800, F04C 2700
Patent
active
042215536
ABSTRACT:
An orbital pump comprises a pump housing having first and second end walls and an intermediate annular, inwardly projecting wide wall member. First and second axial drive shaft portions are installed through corresponding housing end walls. A rotor, excentrically rotatably mounted to inner ends of the drive shaft portions, is installed in the housing with first and second rotor end flanges adjacent to the corresponding sides of the annular wall member so that the pump end walls, annular wall member and rotor end flanges divide the housing into an inlet plenum, a generally square compression chamber and an outlet plenum. A pair of orthogonally intersecting vanes mounted through the rotor divide the compression chamber into four pumping sub-chambers, ends of each vane being orthogonal to opposite sides of the compression chamber, and in tangential sliding contact therewith. As the rotor, which is constrained to oribtal movement by bell crank means, orbits the compression chamber, inlet and outlet parts to and from the pumping chambers are sequentially uncovered and covered to enable pumping. Alternatively, poppet valves may be provided for controlling flow into and out of the pumping chambers.
REFERENCES:
patent: 2423507 (1947-07-01), Lawton
patent: 3314401 (1967-04-01), Kell
patent: 3318291 (1967-05-01), Hallenbeck et al.
patent: 3332403 (1967-07-01), Reller
patent: 3787150 (1974-01-01), Sarich
patent: 4097205 (1978-06-01), Miles
Appel Gary
Vrablik John J.
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