Centrifugal fan
US7255533B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Nov 21, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
It is possible to keep a diameter of an impeller and a cross sectional area of an air channel as large as possible while reducing a size of a centrifugal fan in a direction perpendicular to an axis. Thereby, it is possible to acquire characteristics of a high air volume and a high static pressure without lowering the efficiency. In the centrifugal fan, when the radial gap of the cross section in an air channel 10b is gradually enlarged from a clapper portion 10c toward an outlet 10d except for a specific region 10h, the cross inner sectional area of an air channel 10b is gradually enlarged from the clapper portion 10c toward the outlet 10d.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.