Fan structure having integrated rotor impeller, and methods of producing the same
US11255339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2018 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Feb 16, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/31
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan structure having integrated rotor impeller, and methods of producing the same are provided. The fan structure includes a fan housing that encircles a longitudinal axis, and defines an airflow direction from an inlet side to an exit side. The integrated rotor impeller structure is disposed to rotate within the fan housing. The integrated rotor impeller structure includes (a) a cylindrical rotor shell being annular about the longitudinal axis, and having a shell length, and (b) an axis rod coaxial with the longitudinal axis, and having an axis rod length of less than or equal to the shell length. An airflow annulus is created therebetween. A blade is disposed within the airflow annulus to extend radially from the external surface of the axis rod to the inside surface of the the cylindrical rotor shell. One or more magnets are integrated within the integrated rotor impeller structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.