Pump motor having submersible stator and rotor and insulated winding set terminals
US6174143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/919
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless electric motor 26 includes a stator assembly 32 defining an interior chamber 38. The stator assembly includes a stator core 34 and windings 36. The windings and at least a portion 44 of the stator core are in open communication with the interior chamber. A rotor assembly 42 is provided in the interior chamber. An electronic control unit 60 is coupled to the stator assembly and has an upper surface 62 in communication with the interior chamber. A fluid flow path structure 64 is constructed and arranged to permit fluid to pass from an inlet in the stator assembly and enter the interior chamber so that the rotor assembly, the windings, and the portion of said stator core are submerged in the fluid for cooling the rotor assembly, the windings, and the portion of the stator core. Fluid also contacts the upper surface of the electronic control unit to cool the electronic control unit. Fluid isolating structure 74' prevents fluid from contacting an end 81 of the windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.