Electric motor comprising an acoustic attenuation device
US10855139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Apr 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The electric motor includes a frame defining an inner volume (VI) wherein is accommodated a rotor, a stator and a fan, the frame comprising a first aperture placing the inner volume (VI) of the frame in fluidic communication with the outside of the frame, a second aperture placing the internal volume (VI) of the frame in fluidic communication with the outside of the frame along a radial axis (R) substantially perpendicular to an axis of rotation (X) of the rotor. The fan being positioned in proximity to the second aperture and being configured for generating a gas fluid flow (F), at least one acoustic attenuation device is accommodated in the second aperture so as to partly close the second aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.