Patent · US Active

Fan comprising an impeller with blades

US10605269B2 · kind B2 · utility

9Cited by

7References

16Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Michael Stadler · Munich, DE
Peter Ragg · Kununurra, AU
Wolfgang Laufer · Schenkenzell, DE

Key dates

Filing date	Feb 12, 2015
Grant date	Mar 31, 2020
Priority date	—
Expiry date	Feb 8, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/307
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fan has an impeller (20) that is equipped with blades (26, 28, 30, 32, 34; 58). The blades are configured so that the blade loading of individual blades differs during operation. As a result of this variable blade loading, the frequencies associated with the blade-passing noise (BPF) of the fan can be distributed over a broader frequency spectrum, and thus have a less obtrusive effect.

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