Fan unit
US8079801B2 · kind B2 · utility
7Cited by
3References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/166
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A serial axial fan unit includes first and second motors with their base portions, i.e., first and second base portions axially facing each other. A motor gap is arranged axially between the first and second base portions. An axial length of the motor gap is preferably in a range from approximately 0.3 mm to approximately 2.0 mm. This configuration reduces transmissions of vibration of each of the first and second motors to the other, thereby reducing vibration interference between the first and second motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.