Patent · US Active

Balancing pockets

US9909423B2 · kind B2 · utility

0Cited by

4References

7Claims

0Family size

Assignee

emb-papst Mulfingen GmbH & Co. KG · DE

Inventors

Markus Hoff · Künzelsau, DE
Katrin Bohl · Künzelsau, DE
Reinhard Strohmeier · Rot am See, DE

Key dates

Filing date	Mar 9, 2015
Grant date	Mar 6, 2018
Priority date	—
Expiry date	Sep 9, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/306
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a drum rotor wheel for a fan having bulges to accommodate balancing weights. A drum rotor wheel according to the invention has several blades that are curved forward. The blades have a leading edge and a trailing edge. A top disc and a bottom disc are provided on the drum rotor wheel. At least one blade of the drum rotor wheel has a bulge on its leading edge. This bulge minimizes the area of flow separation, as a result of which the magnitude of the flow separation is likewise minimized. In other words, due to the bulge, the efficiency of the drum rotor wheel is increased.

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