Deep well submersible pump
US6579077B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/445
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A deep well submersible pump has a pump housing containing an electric motor. The motor is radially spaced from the pump housing interior surface defining an annular channel through the pump housing from an inlet opening to an outlet opening of the housing. The motor is mounted on a cowling that has an exterior surface. A plurality of deswirler blades extend between the pump housing interior surface and the cowling exterior surface. As the deswirler blades extend through the housing interior, a spacing between the-cowling exterior surface and the housing interior surface expands radially. The cowling exterior surface and the pump housing interior surface define an annular liquid flow path that is first directed radially outward from the inlet opening and then curves around the cowling and is directed axially through the deswirler blades to the annular channel between the motor and the pump housing interior surface. An impeller mounted on the motor shaft has axially spaced inner and outer disks with a plurality of radiating vanes between the disks. The outer disk has a center hole with an annular rim surface in sealing engagement with the inlet cap and a peripheral surface in sealin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.