Pumps – Motor driven – Pump within rotary working member
Patent
1990-06-29
1992-09-08
Smith, Leonard E.
Pumps
Motor driven
Pump within rotary working member
418171, F04B 1700
Patent
active
051453290
ABSTRACT:
A homoplanar brushless electric gerotor (10) includes a housing assembly (32) defining a substantially closed cavity (52), a fluid inlet port (88). Inner and outer gerotor pump gears (72,74), are eccentrically disposed for relative rotation within the cavity whereupon a working fluid received at the inlet port at a low pressure is discharged from the outlet port at a high pressure. A plurality of alternatingly radially polarized circumferentially aligned permanent magnets (76) are carried by one of the pump gears for rotation therewith. A stator including windings (44) circumferentially distributed and axially spaced from the permanent magnets (76) electromagnetically interact therewith to effect their rotation upon the electrical energization of the windings (44) by a drive circuit (26).
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Sourcebook of Electric Circuits, John Markus, Chapter 52 "Motor Control Circuits ", pp. 404-412.
Stepping Motors: A guide to modern theory and Practice, P. P. Acarnley, Chapter 2, "Drive Ciruits", pp. 15-25.
Eaton Gerotors Catalog 11-883, Aug. 1985.
O'Neil Walter K.
Zumbusch Steven J.
Eaton Corporation
Kasper L. J.
Smith Leonard E.
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