Canned motor pump with heat exchanger in rotor chamber
US5144177A · kind A · utility
8Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Apr 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/197
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The rotor of a canned motor for a centrifugal pump is cooled by a heat-exchanger installed in the rotor chamber and receives liquid from the plenum chamber of the pump or from another source. Liquid entering the rotor chamber can leak therefrom by way of a flow-restricting outlet (at 10). The outlet permits gases to escape from the rotor chamber when the motor is started, but limits the leakage of liquid from the rotor chamber. Leaking liquid is admitted into the suction chamber of the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.