Blower wheel having interior motor cooling ribs
US6024543A · kind A · utility
7Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Nov 7, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/282
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower wheel for an electric motor driven fan includes an impeller in concentric alignment with a back plate. The back plate has an interior sleeve with a plurality of inwardly directed ribs that define a motor receiving circle in which a motor is disposed. Gaps between the ribs form a cooling shroud about a motor rotor such that when the blower wheel is rotated the plurality of ribs force high velocity air through the gaps and over the outside surface of the rotor. The blower also includes a shroud positioned about the blower wheel and motor having inlet and outlet air openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.