Title:
ROTARY-LINEAR VANE GUIDANCE IN A ROTARY VANE PUMPING MACHINE
Document Type and Number:
WIPO Patent Application WO1999001666
Kind Code:
A3
Abstract:
A rotary vane pumping machine (20) having a rotary-linear vane guidance structure, including a translation ring (40) disposed at each axial end of the pumping machine, the translation ring rotating around a fixed hub (42), with the fixed hub being eccentric to a rotor shaft (21) axis, with the rotor (22) spinning around the rotor shaft axis which is a fixed rotational axis relative to a stator cavity (26). A plurality of vanes (24) are disposed in a corresponding plurality of vane slots (25) in the rotor, each of the vanes having a tip portion (31) and a base portion (33), with the base portion having a protruding tab (35) extending from each axial end therefrom. A plurality of linear channels (46) are formed in each translation ring, wherein the protruding tabs extending from the base portion of each of the plurality of vanes communicate with a respective linear channel in the translation ring, whereby the rotor rotation causes rotation of the vanes and a corresponding rotation of the translation ring. The stator cavity has a contoured sealing profile determined from a continuous path traced by the tips of the vanes as the rotor spins around the rotor shaft axis and the translation ring rotates around the eccentric fixed hub, thereby creating cascading cells of compression and expansion between the rotor, the vanes, and the stator cavity as the vanes sweep by the contoured profile of the stator cavity.
Inventors:
MALLEN BRIAN D (US)
Application Number:
PCT/US1998/013507
Publication Date:
June 10, 1999
Filing Date:
June 30, 1998
Export Citation:
Assignee:
MALLEN BRIAN D (US)
International Classes:
F01C1/32; F01C21/08; (IPC1-7): F04C2/344
Foreign References:
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| JPS56110591A | 1981-09-01 | |||
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| US1940384A | 1933-12-19 | |||
| SU920261A1 | 1982-04-15 | |||
| US3771902A | 1973-11-13 | |||
| US3053438A | 1962-09-11 | |||
| US3176664A | 1965-04-06 | |||
| US1743539A | 1930-01-14 | |||
| US4692104A | 1987-09-08 | |||
| US4830593A | 1989-05-16 | |||
| US2536938A | 1951-01-02 | |||
| US5417555A | 1995-05-23 |
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