Patent · US Active

Fan and impeller thereof

US7918651B2 · kind B2 · utility

3Cited by

5References

16Claims

0Family size

Assignee

Delta Electronics, Inc. · TW

Inventors

Chen Jiang · New York, US
Chung-Kai Lan · Daxi District, TW
Hung-Chi Chen · New Taipei, TW

Key dates

Filing date	Feb 7, 2007
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Aug 30, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/282
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An impeller includes a hub, a plurality of first blades, and a plurality of second blades. The first blades are disposed around the hub. The second blades are disposed between the first blades. The lengths of the second blades are shorter than those of the first blades. The impeller can avoid the airflow reflux and have good airflow efficiency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.