Immersion pump assembly
US5028218A · kind A · utility
15Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jun 5, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/197
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An immersion pump assembly comprises a pump and a wet-rotor motor driving the pump and having a common hollow spindle for the motor and the pump. Liquid in the wet-rotor compartment of the motor can be introduced into the spindle and conveyed within the spindle into the pump casing in heat exchange relationship with the liquid conveyed by the pump, by way of the wall of the spindle. The liquid is returned from the spindle into the rotor compartment by a pumping action. The exit and return openings for the liquid in the rotor compartment are spaced from each other axially of the pump assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.