Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1977-06-17
1978-12-12
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 88, 418101, 418151, F04C 1102, F04C 1502, F01C 2104, F01C 2106
Patent
active
041294050
ABSTRACT:
Scroll apparatus for pumping liquids wherein recessed liquid transfer passage means are provided in the end plates of the scroll members. The transfer passage means may be inner passages within the scroll involutes, outer passages outside the scroll involutes or a combination of inner and outer passages. These passages are located and configured to be opened substantially immediately after the orbiting involute wrap has reached that point in its orbiting cycle to define three essentially completely sealed-off liquid zones. These passages remain open at least until the liquid passages between the wraps are sufficiently large to prevent any substantial pressure pulsations within the scroll liquid pump. The scroll liquid pumps may be operated to pump liquid radially inward or outward.
REFERENCES:
patent: 465050 (1891-12-01), Rand et al.
patent: 3302623 (1967-02-01), Zimmermann
patent: 3802809 (1974-04-01), Vulliez
patent: 3817664 (1974-06-01), Bennett et al.
patent: 3884599 (1975-05-01), Young et al.
Arthur D. Little Inc.
Lepper Bessie A.
Vrablik John J.
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