Pumps – Motor driven – Pump within rotary working member
Patent
1993-12-09
1996-02-27
Freay, Charles
Pumps
Motor driven
Pump within rotary working member
417368, 4174238, 41742312, F04B 3504
Patent
active
054944139
ABSTRACT:
A fluid pump powered by an integral canned motor includes a housing having a cylindrical passage extending therethrough. A sealed annular stator is mounted around the housing. An impeller assembly is rotatably mounted in the passage in the housing. The impeller assembly includes an axial flow impeller and a sealed rotor mounted around the periphery of the impeller. Bearings, including thrust bearings, are mounted between the periphery of the impeller assembly and the housing. A radial flow auxiliary impeller may be mounted on the impeller assembly to create a radial flow of water from the cylindrical passage in the housing to a peripheral fluid circulation channel between the impeller assembly and the housing. The auxiliary flow impeller pressurizes the peripheral fluid circulation channel.
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Campen Clifford H.
Drake James A.
Jenkins Leonard S.
Kujawski Joseph M.
Veronesi Luciano
Freay Charles
Westinghouse Electric Corporation
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